1

2# -*- coding: utf-8 -*-

3

4 u'''Lazily import C{pygeodesy} modules and attributes, based on

5 U{lazy_import<https://modutil.ReadTheDocs.io/en/latest/#lazy_import>}

6 from I{Brett Cannon}'s U{modutil<https://PyPI.org/project/modutil>}.

7

8 C{Lazy import} is I{supported only for }U{Python 3.7+

9<https://Snarky.Ca/lazy-importing-in-python-3-7>} and is I{enabled by

10 default} in U{PyGeodesy 18.11.10<https://PyPI.org/project/PyGeodesy>}

11 I{and newer}.

12

13 To I{enable} C{lazy import}, set C{env} variable C{PYGEODESY_LAZY_IMPORT}

14 to C{1}, C{2}, C{3} or higher prior to C{import pygeodesy}. To I{disable}

15 C{lazy import}, set C{env} variable C{PYGEODESY_LAZY_IMPORT} to C{0} or

16 an empty string. Use C{2} or higher to print a message for each lazily

17 imported module and attribute, similar to C{env} variable C{PYTHONVERBOSE}

18 showing imports. Using C{3} or higher also shows the importing file name

19 and line number.

20

21@note: C{Lazy import} applies only to top-level modules of C{pygeodesy}.

22 A C{lazy import} of a top-level module inherently loads all sub-modules

23 imported by that top-level module.

24

25@note: C{Lazy import} raises a L{LazyAttributeError} or L{LazyImportError}

26 depending on the cause of the error and such errors can occur late, after

27 all initial imports.

28'''

29

30# from pygeodesy.errors import _xError2 # _ALL_MODS

31 from pygeodesy.interns import MISSING, NN, __all__ as _interns_a_l_l_, _areaOf_, \

32 _attribute_, _by_, _COLONSPACE_, _COMMASPACE_, \

33 _doesn_t_exist_, _DOT_, _enabled_, _EQUALSPACED_, \

34 _from_, _immutable_, _isclockwise_, _ispolar_, _NL_, \

35 _no_, _NorthPole_, _not_, _or_, _pygeodesy_, _line_, \

36 _module_, _pygeodesy_abspath_, _Python_, _QUOTE1_, \

37 _QUOTE2_, _SouthPole_, _SPACE_, _sub_packages, _UNDER_, \

38 _version_, _dunder_nameof, _headof, _tailof # _DEPRECATED_

39 from pygeodesy.interns import _intern # PYCHOK used!

40# from pygeodesy.streprs import Fmt, pairs, unstr # _ALL_MODS

41

42 from os import getenv as _getenv # in .errors, .geodsolve, .props, .units

43 from os.path import basename as _basename

44 import sys as _sys # in .basics._sizeof

45 try:

46 from importlib import import_module

47 except ImportError: # Python 2.6-

48 def import_module(name, *package):

49 t = _ALL_MODS.streprs.unstr(import_module, name, *package)

50 raise LazyImportError(t, txt=_doesn_t_exist_)

51

52_a_l_l_ = '__all__' # in .__init__

53__as__ = ' as '

54_FOR_DOCS = _getenv('PYGEODESY_FOR_DOCS', NN) # for epydoc ...

55_from_DOT__ = _SPACE_(NN, _from_, _DOT_)

56_i0 = () # PYCHOK empty tuple

57_imports_ = 'imports'

58_init__all__ = _FOR_DOCS or _getenv('PYGEODESY_INIT__ALL__', _a_l_l_) == _a_l_l_ # PYCHOK expoted

59_lazily_ = 'lazily'

60_lazily_imported__ = _SPACE_('#', _lazily_, 'imported', NN)

61_p_a_c_k_a_g_e_ = '__package__'

62_PYGEODESY_GEOCONVERT_ = 'PYGEODESY_GEOCONVERT' # PYCHOK .mgrs, test.bases

63_PYGEODESY_GEODSOLVE_ = 'PYGEODESY_GEODSOLVE' # PYCHOK .geodsolve, test.bases

64_PYGEODESY_LAZY_IMPORT_ = 'PYGEODESY_LAZY_IMPORT'

65_PYGEODESY_RHUMBSOLVE_ = 'PYGEODESY_RHUMBSOLVE' # PYCHOK .rhumb.solve, test.bases

66_PYTHON_X_DEV = getattr(_sys, '_xoptions', {}).get('dev', # Python 3.2+

67 _getenv('PYTHONDEVMODE', NN)) # PYCHOK exported

68_sys_version_info2 = _sys.version_info[:2] # in .basics, .fmath, ...

69_unlazy = _unLazy0 = _sys_version_info2 < (3, 7) # PYCHOK mod.__getattr__ 3.7+

70_WARNINGS_X_DEV = _getenv('PYGEODESY_WARNINGS', NN) and (

71 _PYTHON_X_DEV or bool(_sys.warnoptions)) # PYCHOK .props

72# @module_property[_RO?] <https://GitHub.com/jtushman/proxy_tools/>

73 isLazy = None # see @var isLazy in .__init__

74

75

76 class LazyAttributeError(AttributeError):

77 '''Raised if a C{lazily imported} attribute is missing or invalid.

78 '''

79 def __init__(self, *name_value, **txt):

80 _ALL_MODS.errors._error_init(AttributeError, self, name_value, **txt)

81

82

83 class LazyImportError(ImportError):

84 '''Raised if C{lazy import} is not supported, disabled or failed some other way.

85 '''

86 def __init__(self, *name_value, **txt):

87 _ALL_MODS.errors._error_init(ImportError, self, name_value, **txt)

88

89

90 class _Dict(dict):

91 '''(INTERNAL) Imports C{dict}.

92 '''

93 def __getattr__(self, attr):

94 try:

95 return self[attr]

96 except KeyError:

97 return dict.__getattr__(self, attr)

98

99# def __setattr__(self, attr, value):

100# if attr in self:

101# self[attr] = value

102# else:

103# dict.__setattr__(self, attr, value)

104

105 def add(self, key, value, *values):

106 '''Add C{[key] = value}, typically C{[attr] = mod}.

107

108 @raise AssertionError: The B{C{key}} already exists

109 with a different B{C{value}}.

110 '''

111 if key in self:

112 val = self[key] # duplicate OK

113 if val != value and val not in values: # PYCHOK no cover

114 k = _ALL_MODS.streprs.Fmt.SQUARE(_imports_, key)

115 t = _COLONSPACE_(k, repr(val))

116 t = _COMMASPACE_(t, _not_(repr(value)))

117 raise AssertionError(t)

118 else:

119 self[key] = value

120

121

122 class _NamedEnum_RO(dict):

123 '''(INTERNAL) C{Read_Only} enum-like C{dict} sub-class.

124 '''

125# _name = NN # also first kwd, __init__(_name=...)

126

127 def _DOT_(self, attr): # PYCHOK no cover

128 return _DOT_(self._name, attr) # PYCHOK _name

129

130 def __getattr__(self, attr):

131 try:

132 return self[attr]

133 except KeyError:

134 t = self._DOT_(attr)

135 raise LazyAttributeError(t, txt=_doesn_t_exist_)

136

137 def __setattr__(self, attr, value): # PYCHOK no cover

138 t = _EQUALSPACED_(self._DOT_(attr), value)

139 raise LazyAttributeError(t, txt=_immutable_)

140

141 def enums(self):

142 for m, t in dict.items(self):

143 if isinstance(t, tuple) and \

144 not m.startswith(_UNDER_): # skip _name

145 m = m.replace(_UNDER_, _DOT_, 1)

146 yield m, t

147

148 def imports(self):

149 _D = _Dict()

150 _add = _D.add

151 for m, t in self.enums():

152 _add(m, m)

153 for a in t:

154 a, _, as_ = a.partition(__as__)

155 if as_:

156 _add(as_, _DOT_(m, a), *_sub_packages)

157 else:

158 _add(a, m)

159 return _D

160

161

162 def _i(*names):

163 '''(INTERNAL) Intern all C{names}.

164 '''

165 return tuple(map(_intern, names)) if names else _i0

166

167

168_ALL_INIT = _i(_pygeodesy_abspath_, _version_)

169

170# __all__ value for most modules, accessible as _ALL_LAZY.<module>

171_ALL_LAZY = _NamedEnum_RO(_name='_ALL_LAZY',

172 albers=_i('AlbersEqualArea', 'AlbersEqualArea2', 'AlbersEqualArea4',

173 'AlbersEqualAreaCylindrical', 'AlbersEqualAreaNorth', 'AlbersEqualAreaSouth',

174 'AlbersError', 'Albers7Tuple'),

175 auxilats=_i(), # module only

176 azimuthal=_i('AzimuthalError', 'Azimuthal7Tuple',

177 'Equidistant', 'EquidistantExact', 'EquidistantGeodSolve', 'EquidistantKarney',

178 'Gnomonic', 'GnomonicExact', 'GnomonicGeodSolve', 'GnomonicKarney',

179 'LambertEqualArea', 'Orthographic', 'Stereographic',

180 'equidistant', 'gnomonic'),

181 basics=_i('clips', 'copysign0', 'copytype', 'halfs2',

182 'int1s', 'isbool', 'isCartesian', 'isclass', 'iscomplex', 'isDEPRECATED', 'isfloat',

183 'isidentifier', 'isinstanceof', 'isint', 'iskeyword', 'isLatLon', 'islistuple',

184 'isNvector', 'isodd', 'isscalar', 'issequence', 'isstr', 'issubclassof',

185 'len2', 'map1', 'map2', 'neg', 'neg_',

186 'signBit', 'signOf', 'splice', 'str2ub', 'ub2str', 'unsigned0'),

187 booleans=_i('BooleanFHP', 'BooleanGH', 'LatLonFHP', 'LatLonGH',

188 'isBoolean'),

189 cartesianBase=_i(), # module only

190 clipy=_i('ClipCS4Tuple', 'ClipFHP4Tuple', 'ClipGH4Tuple', 'ClipLB6Tuple', 'ClipSH3Tuple',

191 'clipCS4', 'clipFHP4', 'clipGH4', 'clipLB6', 'clipSH', 'clipSH3'),

192 css=_i('CassiniSoldner', 'Css', 'CSSError', 'toCss',

193 'EasNorAziRk4Tuple', 'EasNorAziRkEqu6Tuple', 'LatLonAziRk4Tuple'),

194 constants=_i('DIG', 'EPS', 'EPS0', 'EPS02', 'EPS1', 'EPS2', 'EPS4', 'EPS_2',

195 'INF', 'INT0', 'MANT_DIG', 'MAX', 'MAX_EXP', 'MIN', 'MIN_EXP', 'NAN', 'NEG0', 'NINF',

196 'PI', 'PI2', 'PI_2', 'PI3', 'PI_3', 'PI3_2', 'PI4', 'PI_4',

197 'R_FM', 'R_GM', 'R_KM', 'R_M', 'R_MA', 'R_MB', 'R_NM', 'R_QM', 'R_SM', 'R_VM',

198 'float_', 'float0_', 'isclose', 'isfinite', 'isinf', 'isint0',

199 'isnan', 'isnear0', 'isnear1', 'isnear90', 'isneg0', 'isninf', 'isnon0',

200 'remainder'),

201 datums=_i('Datum', 'Datums', 'Transform', 'Transforms'),

202# deprecated=_i(), # module only

203 dms=_i('F_D', 'F_DM', 'F_DMS', 'F_DEG', 'F_MIN', 'F_SEC', 'F_D60', 'F__E', 'F__F', 'F__G', 'F_RAD',

204 'F_D_', 'F_DM_', 'F_DMS_', 'F_DEG_', 'F_MIN_', 'F_SEC_', 'F_D60_', 'F__E_', 'F__F_', 'F__G_', 'F_RAD_',

205 'F_D__', 'F_DM__', 'F_DMS__', 'F_DEG__', 'F_MIN__', 'F_SEC__', 'F_D60__', 'F__E__', 'F__F__', 'F__G__', 'F_RAD__',

206 'S_DEG', 'S_MIN', 'S_SEC', 'S_DMS', 'S_RAD', 'S_SEP',

207 'bearingDMS', 'clipDegrees', 'clipRadians', 'compassDMS', 'compassPoint',

208 'degDMS', 'latDMS', 'latlonDMS', 'latlonDMS_', 'lonDMS', 'normDMS',

209 'parseDDDMMSS', 'parseDMS', 'parseDMS2', 'parse3llh', 'parseRad', 'precision', 'toDMS'),

210 ecef=_i('EcefError', 'EcefFarrell21', 'EcefFarrell22', 'EcefKarney', 'EcefMatrix',

211 'EcefSudano', 'Ecef9Tuple', 'EcefVeness', 'EcefYou'),

212 elevations=_i('Elevation2Tuple', 'GeoidHeight2Tuple',

213 'elevation2', 'geoidHeight2'),

214 ellipsoidalBase=_i(), # module only

215 ellipsoidalBaseDI=_i(), # module only

216 ellipsoidalExact=_i(), # module only

217 ellipsoidalGeodSolve=_i(), # module only

218 ellipsoidalKarney=_i(), # module only

219 ellipsoidalNvector=_i(), # module only

220 ellipsoidalVincenty=_i('VincentyError',), # nothing else

221 ellipsoids=_i('a_f2Tuple', 'Circle4Tuple', 'Curvature2Tuple',

222 'Ellipsoid', 'Ellipsoid2', 'Ellipsoids',

223 'a_b2e', 'a_b2e2', 'a_b2e22', 'a_b2e32', 'a_b2f', 'a_b2f_', 'a_b2f2', 'a_b2n',

224 'a_f2b', 'a_f_2b', 'b_f2a', 'b_f_2a',

225 'e2f', 'e22f',

226 'f2e2', 'f2e22', 'f2e32', 'f_2f', 'f2f_', 'f2f2', 'f2n', 'n2e2', 'n2f', 'n2f_'),

227 elliptic=_i('Elliptic', 'EllipticError', 'Elliptic3Tuple'),

228 epsg=_i('Epsg', 'EPSGError'),

229 errors=_i('AuxError', 'ClipError', 'CrossError', 'GeodesicError', 'IntersectionError',

230 'NumPyError', 'LenError', 'LimitError', 'MGRSError',

231 'ParseError', 'PointsError', 'RangeError', 'RhumbError',

232 'SciPyError', 'SciPyWarning', 'TRFError', 'TriangleError', 'UnitError', 'VectorError',

233 'crosserrors', 'exception_chaining', 'isError', 'itemsorted',

234 'limiterrors', 'rangerrors'),

235 etm=_i('Etm', 'ETMError', 'ExactTransverseMercator',

236 'parseETM5', 'toEtm8'),

237 fmath=_i('Fdot', 'Fhorner', 'Fhypot', 'Fpolynomial', 'Fpowers', 'Fn_rt', 'Fcbrt', 'Fsqrt',

238 'bqrt', 'cbrt', 'cbrt2', 'euclid', 'euclid_',

239 'facos1', 'fasin1', 'fatan', 'fatan1', 'fatan2', 'favg',

240 'fdot', 'fdot3', 'fmean', 'fmean_', 'fhorner', 'fidw', 'fpolynomial',

241 'fpowers', 'fprod', 'frange', 'freduce', 'fremainder',

242 'hypot', 'hypot_', 'hypot1', 'hypot2', 'hypot2_',

243 'norm2', 'norm_', 'sqrt0', 'sqrt3', 'sqrt_a', 'zcrt', 'zqrt'),

244 formy=_i('Radical2Tuple',

245 'antipode', 'antipode_', 'bearing', 'bearing_',

246 'compassAngle', 'cosineForsytheAndoyerLambert', 'cosineForsytheAndoyerLambert_',

247 'cosineAndoyerLambert', 'cosineAndoyerLambert_', 'cosineLaw', 'cosineLaw_',

248 'equirectangular', 'equirectangular_', 'euclidean', 'euclidean_',

249 'excessAbc_', 'excessCagnoli_', 'excessGirard_', 'excessLHuilier_',

250 'excessKarney', 'excessKarney_', 'excessQuad', 'excessQuad_',

251 'flatLocal', 'flatLocal_', 'flatPolar', 'flatPolar_',

252 'hartzell', 'haversine', 'haversine_', 'heightOf', 'heightOrthometric', 'horizon', 'hubeny', 'hubeny_',

253 'intersection2', 'intersections2', 'isantipode', 'isantipode_', 'isnormal', 'isnormal_',

254 'latlon2n_xyz', 'normal', 'normal_', 'n_xyz2latlon', 'n_xyz2philam',

255 'opposing', 'opposing_', 'philam2n_xyz', 'radical2', 'rtp2xyz', 'rtp2xyz_',

256 'thomas', 'thomas_', 'vincentys', 'vincentys_', 'xyz2rtp', 'xyz2rtp_'),

257 frechet=_i('Frechet', 'FrechetDegrees', 'FrechetError', 'FrechetRadians',

258 'FrechetCosineAndoyerLambert', 'FrechetCosineForsytheAndoyerLambert',

259 'FrechetCosineLaw', 'FrechetDistanceTo', 'FrechetEquirectangular',

260 'FrechetEuclidean', 'FrechetExact', 'FrechetFlatLocal', 'FrechetFlatPolar',

261 'FrechetHaversine', 'FrechetHubeny', 'FrechetKarney', 'FrechetThomas',

262 'FrechetVincentys', 'Frechet6Tuple',

263 'frechet_'),

264 fstats=_i('Fcook', 'Flinear', 'Fwelford'),

265 fsums=_i('Fsum', 'Fsum2Tuple', 'ResidualError',

266 'fsum', 'fsum_', 'fsumf_', 'fsum1', 'fsum1_', 'fsum1f_'),

267 gars=_i('Garef', 'GARSError'),

268 geodesicw=_i('Geodesic', 'GeodesicLine', 'Geodesic_WGS84'),

269 geodesicx=_i('gx', 'gxarea', 'gxbases', 'gxline', # modules, see _sub_packages

270 'GeodesicAreaExact', 'GeodesicExact', 'GeodesicLineExact', 'PolygonArea'),

271 geodsolve=_i('GeodesicSolve', 'GeodesicLineSolve', 'GeodSolve12Tuple'),

272 geohash=_i('Geohash', 'GeohashError', 'Neighbors8Dict', 'Resolutions2Tuple'),

273 geoids=_i('GeoidError', 'GeoidG2012B', 'GeoidKarney', 'GeoidPGM', 'egmGeoidHeights',

274 'PGMError', 'GeoidHeight5Tuple'),

275 hausdorff=_i('Hausdorff', 'HausdorffDegrees', 'HausdorffError', 'HausdorffRadians',

276 'HausdorffCosineAndoyerLambert', 'HausdorffCosineForsytheAndoyerLambert',

277 'HausdorffCosineLaw', 'HausdorffDistanceTo', 'HausdorffEquirectangular',

278 'HausdorffEuclidean', 'HausdorffExact', 'HausdorffFlatLocal', 'HausdorffFlatPolar',

279 'HausdorffHaversine', 'HausdorffHubeny', 'HausdorffKarney', 'HausdorffThomas',

280 'HausdorffVincentys', 'Hausdorff6Tuple',

281 'hausdorff_', 'randomrangenerator'),

282 heights=_i('HeightCubic', 'HeightError',

283 'HeightIDWcosineAndoyerLambert', 'HeightIDWcosineForsytheAndoyerLambert',

284 'HeightIDWcosineLaw', 'HeightIDWdistanceTo', 'HeightIDWequirectangular',

285 'HeightIDWeuclidean', 'HeightIDWexact', 'HeightIDWflatLocal', 'HeightIDWflatPolar',

286 'HeightIDWhaversine', 'HeightIDWhubeny', 'HeightIDWkarney', 'HeightIDWthomas',

287 'HeightIDWvincentys', 'HeightLinear', 'HeightLSQBiSpline', 'HeightSmoothBiSpline'),

288 interns=_interns_a_l_l_,

289 iters=_i('LatLon2PsxyIter', 'PointsIter', 'points2',

290 'isNumpy2', 'isPoints2', 'isTuple2', 'iterNumpy2', 'iterNumpy2over'),

291 karney=_i('Area3Tuple', 'Caps', 'Direct9Tuple', 'GDict', 'Inverse10Tuple', 'Rhumb8Tuple'),

292 ktm=_i('KTMError', 'KTransverseMercator'),

293 latlonBase=_i(), # module only

294 lazily=_i('LazyAttributeError', 'LazyImportError', 'isLazy', 'print_', 'printf'),

295 lcc=_i('Conic', 'Conics', 'Lcc', 'LCCError', 'toLcc'),

296 ltp=_i('Attitude', 'AttitudeError', 'ChLV', 'ChLVa', 'ChLVe', 'Frustum',

297 'LocalCartesian', 'LocalError', 'Ltp', 'tyr3d'),

298 ltpTuples=_i('Aer', 'Aer4Tuple', 'Attitude4Tuple',

299 'ChLVEN2Tuple', 'ChLV9Tuple', 'ChLVYX2Tuple', 'ChLVyx2Tuple',

300 'Enu', 'Enu4Tuple', 'Footprint5Tuple', 'Local9Tuple', 'Los',

301 'Ned', 'Ned4Tuple', 'Uvw', 'Uvw3Tuple', 'XyzLocal', 'Xyz4Tuple'),

302 mgrs=_i('Mgrs', 'parseMGRS', 'toMgrs', 'Mgrs4Tuple', 'Mgrs6Tuple'),

303 named=_i('callername', 'classname', 'classnaming', 'modulename',

304 'nameof', 'notImplemented', 'notOverloaded'),

305 namedTuples=_i('Bearing2Tuple', 'Bounds2Tuple', 'Bounds4Tuple',

306 'Destination2Tuple', 'Destination3Tuple',

307 'Distance2Tuple', 'Distance3Tuple', 'Distance4Tuple',

308 'EasNor2Tuple', 'EasNor3Tuple', 'Forward4Tuple', 'Intersection3Tuple',

309 'LatLon2Tuple', 'LatLon3Tuple', 'LatLon4Tuple',

310 'LatLonDatum3Tuple', 'LatLonDatum5Tuple',

311 'LatLonPrec3Tuple', 'LatLonPrec5Tuple',

312 'NearestOn2Tuple', 'NearestOn3Tuple', 'NearestOn6Tuple', 'NearestOn8Tuple',

313 'PhiLam2Tuple', 'PhiLam3Tuple', 'PhiLam4Tuple', 'Point3Tuple', 'Points2Tuple',

314 'Reverse4Tuple', 'Triangle7Tuple', 'Triangle8Tuple', 'Trilaterate5Tuple',

315 'UtmUps2Tuple', 'UtmUps5Tuple', 'UtmUps8Tuple', 'UtmUpsLatLon5Tuple',

316 'Vector2Tuple', 'Vector3Tuple', 'Vector4Tuple'),

317 nvectorBase=_i(_NorthPole_, _SouthPole_),

318 osgr=_i('Osgr', 'OSGRError', 'parseOSGR', 'toOsgr'),

319 points=_i('LatLon_', 'LatLon2psxy', 'Numpy2LatLon', 'Shape2Tuple', 'Tuple2LatLon',

320 _areaOf_, 'boundsOf', 'centroidOf', 'fractional',

321 _isclockwise_, 'isconvex', 'isconvex_', 'isenclosedBy', _ispolar_,

322 'luneOf', 'nearestOn5', 'perimeterOf', 'quadOf'),

323 props=_i('Property', 'Property_RO', 'property_RO', 'property_doc_',

324 'deprecated_class', 'deprecated_function', 'deprecated_method',

325 'deprecated_Property_RO', 'deprecated_property_RO', 'DeprecationWarnings'),

326 resections=_i('Collins5Tuple', 'ResectionError', 'Survey3Tuple', 'Tienstra7Tuple',

327 'TriAngle5Tuple', 'TriSide2Tuple', 'TriSide4Tuple',

328 'cassini', 'collins5', 'pierlot', 'pierlotx', 'tienstra7',

329 'snellius3', 'wildberger3',

330 'triAngle', 'triAngle5', 'triArea', 'triSide', 'triSide2', 'triSide4'),

331 rhumb=_i(), # module only

332 rhumb_aux_=_i('RhumbAux', 'RhumbLineAux'),

333 rhumb_ekx=_i('Rhumb', 'RhumbLine'),

334 rhumb_solve=_i('RhumbSolve', 'RhumbLineSolve', 'RhumbSolve7Tuple'),

335 sphericalBase=_i(), # module only

336 sphericalNvector=_i(), # module only

337 sphericalTrigonometry=_i(), # module only

338 simplify=_i('simplify1', 'simplifyRDP', 'simplifyRDPm', 'simplifyRW', 'simplifyVW', 'simplifyVWm'),

339 solveBase=_i(), # module only

340 streprs=_i('anstr', 'attrs', 'enstr2', 'fstr', 'fstrzs', 'hstr', 'instr',

341 'lrstrip', 'pairs', 'reprs', 'strs', 'unstr'),

342 trf=_i('Helmert7Tuple', 'RefFrame', 'RefFrames',

343 'date2epoch', 'epoch2date', 'trfXform'),

344 triaxials=_i('BetaOmega2Tuple', 'BetaOmega3Tuple', 'Jacobi2Tuple',

345 'JacobiConformal', 'JacobiConformalSpherical',

346 'Triaxial', 'Triaxial_', 'TriaxialError', 'Triaxials', 'hartzell4'),

347 units=_i('Band', 'Bearing', 'Bearing_', 'Bool',

348 'Degrees', 'Degrees_', 'Degrees2', 'Distance', 'Distance_', 'Easting', 'Epoch',

349 'Feet', 'FIx', 'Float_', 'Height', 'Height_', 'HeightX', 'Int_',

350 'Lam', 'Lam_', 'Lat', 'Lat_', 'Lon', 'Lon_',

351 'Meter', 'Meter_', 'Meter2', 'Meter3', 'Northing', 'Number_',

352 'Phi', 'Phi_', 'Precision_', 'Radians', 'Radians_', 'Radians2',

353 'Radius_', 'Scalar', 'Scalar_', 'Zone'),

354 unitsBase=_i('Float', 'Int', 'Radius', 'Str'),

355 ups=_i('Ups', 'UPSError', 'parseUPS5', 'toUps8', 'upsZoneBand5'),

356 utily=_i('acos1', 'acre2ha', 'acre2m2', 'asin1', 'atan1', 'atan1d', 'atan2b', 'atan2d',

357 'chain2m', 'circle4', 'cot', 'cot_', 'cotd', 'cotd_',

358 'degrees', 'degrees90', 'degrees180', 'degrees360', 'degrees2grades', 'degrees2m',

359# 'degrees2grades as degrees2gons',

360 'fathom2m', 'ft2m', 'furlong2m',

361 'grades', 'grades400', 'grades2degrees', 'grades2radians',

362# 'grades as gons', 'grades400 as gons400', 'grades2degrees as gons2degrees', 'grades2radians as gons2radians',

363 'km2m', 'm2chain', 'm2degrees', 'm2fathom', 'm2ft', 'm2furlong',

364 'm2km', 'm2NM', 'm2radians', 'm2SM', 'm2toise', 'm2yard', 'NM2m',

365 'radians', 'radiansPI', 'radiansPI2', 'radiansPI_2', 'radians2m',

366 'sincos2', 'SinCos2', 'sincos2_', 'sincos2d', 'sincos2d_', 'sincostan3', 'SM2m',

367 'tand', 'tand_', 'tan_2', 'tanPI_2_2', 'toise2m', 'truncate',

368 'unroll180', 'unrollPI',

369 'wrap90', 'wrap180', 'wrap360', 'wrapPI_2', 'wrapPI', 'wrapPI2', 'wrap_normal',

370 'yard2m'),

371 utm=_i('Utm', 'UTMError', 'parseUTM5', 'toUtm8', 'utmZoneBand5'),

372 utmups=_i('UtmUps', 'UTMUPSError', 'parseUTMUPS5', 'toUtmUps8',

373 'utmupsValidate', 'utmupsValidateOK', 'utmupsZoneBand5'),

374 utmupsBase=_i(), # module only

375 vector2d=_i('Circin6Tuple', 'Circum3Tuple', 'Circum4Tuple', 'Meeus2Tuple', 'Radii11Tuple', 'Soddy4Tuple',

376 'circin6', 'circum3', 'circum4_', 'meeus2', 'radii11', 'soddy4'),

377 vector3d=_i('Vector3d', 'intersection3d3', 'iscolinearWith', 'nearestOn', 'nearestOn6', 'parse3d',

378 'trilaterate2d2', 'trilaterate3d2'),

379 vector3dBase=_i(), # module only

380 webmercator=_i('Wm', 'WebMercatorError', 'parseWM', 'toWm', 'EasNorRadius3Tuple'),

381 wgrs=_i('Georef', 'WGRSError'),)

382

383_ALL_DEPRECATED = _NamedEnum_RO(_name='_ALL_DEPRECATED',

384 deprecated=_i('bases', 'datum', 'nvector', # DEPRECATED modules and ...

385 'rhumbaux', 'rhumbBase', 'rhumbsolve', 'rhumbx'), # ... names

386 deprecated_bases=_i('LatLonHeightBase', 'points2'),

387 deprecated_classes=_i('ClipCS3Tuple', 'EasNorExact4Tuple', 'EcefCartesian',

388 'HeightIDW', 'HeightIDW2', 'HeightIDW3',

389 'LatLonExact4Tuple', 'NearestOn4Tuple', 'Ned3Tuple',

390 'RefFrameError', 'Rhumb7Tuple', 'RhumbOrder2Tuple',

391 'Transform7Tuple', 'TriAngle4Tuple', 'UtmUps4Tuple'),

392 deprecated_consterns=_i('EPS1_2', 'MANTIS', 'OK'),

393 deprecated_datum=_i('Curvature2Tuple', 'Datum', 'Ellipsoid', 'Transform', # assert

394 'Datums', 'Ellipsoids', 'Transforms',

395 'R_M', 'R_MA', 'R_MB', 'R_KM', 'R_NM', 'R_SM', 'R_FM', 'R_VM'),

396 deprecated_functions=_i('anStr', 'areaof', 'atand', 'bounds', # most of the DEPRECATED functions, except ...

397 'clipCS3', 'clipDMS', 'clipStr', 'collins', 'copysign', # ... ellipsoidal, spherical flavors

398 'decodeEPSG2', 'encodeEPSG', 'enStr2', 'equirectangular3',

399 'excessAbc', 'excessGirard', 'excessLHuilier',

400 'false2f', 'falsed2f', 'float0', 'fStr', 'fStrzs', 'hypot3',

401 'inStr', 'isenclosedby', 'istuplist',

402 'joined', 'joined_', 'nearestOn3', 'nearestOn4',

403 'parseUTM', 'perimeterof', 'polygon', 'scalar', 'simplify2',

404 'tienstra', 'toUtm', 'triAngle4', 'unsign0', 'unStr', 'utmZoneBand2'),

405 deprecated_nvector=_i('LatLonNvectorBase', 'Nvector', 'sumOf', 'NorthPole', 'SouthPole'),)

406

407

408 class _ALL_MODS(object):

409 '''(INTERNAL) Memoize import of any L{pygeodesy} module.

410 '''

411 def _DOT_(self, name): # PYCHOK no cover

412 return _DOT_(self.__class__.__name__, name)

413

414 def __getattr__(self, name):

415 '''Get a C{pygeodesy} module or attribute by B{C{name}}.

416

417 @arg name: Qualified module or attribute name (C{str}).

418

419 @raise ImportError: Importing module B{C{name}} failed.

420

421 @raise AttributeError: No attribute named B{C{name}}.

422 '''

423 m = self.getmodule(name)

424 return m if _tailof(m.__name__) == name else \

425 getattr(m, _tailof(name))

426

427 def __setattr__(self, attr, value): # PYCHOK no cover

428 t = _EQUALSPACED_(self._DOT_(attr), repr(value))

429 raise AttributeError(_COLONSPACE_(t, _immutable_))

430

431 def getattr(self, mod, *attr_dflt): # , parent=_pygeodesy_

432 '''Get an attribute of/or a C{pygeodesy} module.

433

434 @arg mod: Qualified module name (C{str}).

435 @arg attr_dflt: Optional attribute name (C{str}) and

436 optional default value (any C{type}).

437

438 @return: The C{pygeodesy} module's attribute value.

439

440 @raise ImportError: Importing module B{C{mod}} failed.

441

442 @raise AttributeError: No attribute named B{C{attr}}.

443 '''

444 v = self.getmodule(mod)

445 if attr_dflt:

446 v = getattr(v, *attr_dflt)

447 return v

448

449 def getmodule(self, name, parent=_pygeodesy_):

450 '''Get a C{pygeodesy} module.

451

452 @arg name: Qualified module name (C{str}).

453

454 @return: The C{pygeodesy} module.

455

456 @raise ImportError: Importing module B{C{name}} failed.

457 '''

458 if _headof(name) != parent:

459 name = _DOT_(parent, name)

460 try:

461 return _sys.modules[name]

462 except KeyError:

463 return import_module(name, parent)

464

465 def items(self): # no module named 'items'

466 '''Yield the modules imported so far.

467 '''

468 for n, m in _sys.modules.items():

469 yield n, m

470

471_ALL_MODS = _ALL_MODS() # PYCHOK singleton

472

473__all__ = _ALL_LAZY.lazily

474__version__ = '23.12.02'

475

476

477 def _ALL_ATTRS(*mods):

478 '''(INTERNAL) Unravel all exported module attributes.

479 '''

480 t = []

481 for mod in mods:

482 t.extend(map(_attrof, mod))

483 return tuple(t)

484

485

486 def _ALL_OTHER(*objs):

487 '''(INTERNAL) Get class and function B{C{objs}} for __all__.

488 '''

489 _interns = _ALL_MODS.interns # from pygeodesy import interns

490

491 def _interned(o): # intern'd base name

492 n = _tailof(_dunder_nameof(o))

493 i = NN(_UNDER_, n, _UNDER_) # intern'd

494 return getattr(_interns, i, n)

495

496 return tuple(map(_interned, objs)) # map2

497

498

499 if _FOR_DOCS:

500 _ALL_DOCS = _ALL_OTHER

501 # (INTERNAL) Only export B{C{objs.__name__}} when making the

502 # docs to force C{epydoc} to include certain classes, methods,

503 # functions and other names in the documentation. Using the

504 # C{epydoc --private ...} command line option tends to include

505 # too much internal documentation.

506 else:

507 def _ALL_DOCS(*unused):

508 return ()

509

510

511 def _all_deprecates():

512 '''(INTERNAL) Build C{dict} of all deprecated imports.

513 '''

514 _D = _ALL_DEPRECATED.imports() # see _all_imports()

515 _ALL_DEPRECATES.update(_D)

516 return _D

517

518_ALL_DEPRECATES = _Dict() # PYCHOK _ALL_DEPRECATED.imports()

519

520

521 def _all_imports():

522 '''(INTERNAL) Build C{dict} of all lazy imports.

523 '''

524 # imports naming conventions stored below - [<key>] = <from>:

525 # import <module> - [<module>] = <module>

526 # from <module> import <attr> - [<attr>] = <module>

527 # from pygeodesy import <attr> - [<attr>] = <attr>

528 # from <module> import <attr> as <name> - [<name>] = <module>.<attr>

529 _D = _ALL_LAZY.imports()

530 _ALL_IMPORTS.update(_D)

531 return _D

532

533_ALL_IMPORTS = _Dict() # PYCHOK _ALL_LAZY.imports()

534

535

536 def _all_missing2(_all_):

537 '''(INTERNAL) Get diffs between pygeodesy.__all__ and lazily._all_imports.

538 '''

539 def _diff(one, two):

540 return tuple(sorted(a for a in one if a not in two))

541

542 _alzy = _Dict((a, a) for a in _ALL_INIT)

543 _alzy.update(_all_imports()) # without _all_backups!

544 return ((_DOT_(_lazily_, _all_imports.__name__), _diff(_all_, _alzy)),

545 (_DOT_(_pygeodesy_, _a_l_l_), _diff(_alzy.keys(), _all_)))

546

547

548 def _attrof(attr_as): # .testDeprecated

549 a, _, as_ = attr_as.partition(__as__)

550 return as_ or a

551

552

553 def _caller3(up): # in .named

554 '''(INTERNAL) Get 3-tuple C{(caller name, file name, line number)}

555 for the caller B{C{up}} stack frames in the Python call stack.

556 '''

557 # sys._getframe(1) ... 'importlib._bootstrap' line 1032,

558 # may throw a ValueError('call stack not deep enough')

559 f = _sys._getframe(up + 1)

560 return (f.f_code.co_name, # caller name

561 _basename(f.f_code.co_filename), # file name

562 f.f_lineno) # line number

563

564

565 def _lazy_attr(unused): # PYCHOK overwritten in _lazy_import

566 pass

567

568

569# def _lazy_attributes(_name_):

570# '''(INTERNAL) Return a function to C{B{_name_}.__getattr__(attr)}

571# on lazily imported modules and sub-modules.

572# '''

573# if _unlazy:

574# raise AssertionError(_COMMASPACE_(_name_, _not_(_DEPRECATED_)))

575#

576# def _getattr(attr, *dflt):

577# try: # a module name

578# return _ALL_MODS.getmodule(attr)

579# except (AttributeError, ImportError):

580# return _ALL_MODS.getattr(_name_, attr, *dflt)

581#

582# return _getattr

583

584

585 def _lazy_import2(pack): # MCCABE 14

586 '''Check for and set up C{lazy import}.

587

588 @arg pack: The name of the package (C{str}) performing the imports,

589 to help resolving relative imports, usually C{__package__}.

590

591 @return: 2-Tuple C{(package, getattr)} of the importing package for

592 easy reference within itself and the callable to be set to

593 C{package.__getattr__}.

594

595 @raise LazyAttributeError: The package, module or attribute name is

596 invalid or does not exist.

597

598 @raise LazyImportError: Lazy import not supported or not enabled or

599 an import failed.

600

601 @note: This is I{Brett Cannon}'s function U{modutil.lazy_import

602 <https://GitHub.com/brettcannon/modutil/blob/master/modutil.py>}

603 modified to handle the C{__all__} and C{__dir__} attributes and

604 call C{importlib.import_module(<module>.<name>, ...)} without

605 causing a C{ModuleNotFoundError}.

606

607 @see: The original U{modutil<https://PyPI.org/project/modutil>},

608 U{PEP 562<https://www.Python.org/dev/peps/pep-0562>} and the

609 U{new way<https://Snarky.Ca/lazy-importing-in-python-3-7/>}.

610 '''

611 if pack != _pygeodesy_ or _unlazy: # new in 3.7

612 t = _no_(_DOT_(pack, _lazy_import2.__name__)) # PYCHOK no cover

613 raise LazyImportError(t, txt=_Python_(_sys.version))

614

615 package, parent = _lazy_init2(pack) # _pygeodesy_

616

617 subpacks = set((parent, '__main__', NN) + tuple(

618 _DOT_(parent, s) for s in _sub_packages))

619 imports = _all_imports()

620 deprecates = _all_deprecates()

621

622 def __getattr__(name): # __getattr__ only for Python 3.7+

623 # only called once for each undefined pygeodesy attribute

624 mod = imports.get(name, NN) or deprecates.get(name, NN)

625 if mod:

626 # importlib.import_module() implicitly sets sub-modules

627 # on this module as appropriate for direct imports (see

628 # note in the _lazy_import2.__doc__ above).

629 if mod in imports or mod in deprecates:

630 attr = name if name != _tailof(mod) else NN

631 else: # must be 'mod.attr as name'

632 mod, _, attr = mod.rpartition(_DOT_)

633 if not (attr and (mod in imports or mod in deprecates)):

634 t = _DOT_(parent, mod)

635 # <https://GitHub.com/mrJean1/PyGeodesy/issues/76>

636 raise LazyAttributeError(_no_(_module_), txt=t)

637 imported = import_module(_DOT_(pack, mod), parent)

638 t = getattr(imported, _p_a_c_k_a_g_e_, None)

639 if t not in subpacks: # invalid module package

640 raise LazyImportError(_DOT_(mod, _p_a_c_k_a_g_e_), t)

641 if attr: # get the attribute

642 imported = getattr(imported, attr, MISSING)

643 if imported is MISSING: # PYCHOK no cover

644 t = _DOT_(mod, attr)

645 # <https://GitHub.com/mrJean1/PyGeodesy/issues/76>

646 raise LazyAttributeError(_no_(_attribute_), txt=t)

647

648 elif name in (_a_l_l_,): # XXX '_d_i_r_', '_m_e_m_b_e_r_s_'?

649 imported = _ALL_INIT + tuple(imports.keys())

650 else: # PYCHOK no cover

651 t = _no_(_module_, _or_, _attribute_)

652 # <https://GitHub.com/mrJean1/PyGeodesy/issues/76>

653 raise LazyAttributeError(t, txt=_DOT_(parent, name))

654

655 setattr(package, name, imported)

656 if isLazy > 1:

657 t = NN(_lazily_imported__, _DOT_(parent, name))

658 if mod and _tailof(mod) != name:

659 t = NN(t, _from_DOT__, mod)

660 if isLazy > 2:

661 try: # see C{_caller3}

662 _, f, s = _caller3(2)

663 t = _SPACE_(t, _by_, f, _line_, s)

664 except ValueError:

665 pass

666 printf(t) # XXX print

667

668 return imported # __getattr__

669

670 global _lazy_attr

671 _lazy_attr = __getattr__

672

673 return package, __getattr__ # _lazy_import2

674

675

676# def _lazy_import_all(_name_):

677# '''(INTERNAL) Return a function mimicking C{from B{__name__} import *},

678# of all items, see .deprecated.__init__

679# '''

680# if _unlazy:

681# raise AssertionError(_COMMASPACE_(_name_, _not_(_DEPRECATED_)))

682#

683# _getattr = _lazy_attributes(_name_) # _name_.__getattr__

684# _import_start = _lazy_import_star(_name_, ALL_=_ALL_IMPORTS)

685#

686# def _import_all(attr, *dflt):

687# return _import_star(_name_) if attr == _a_l_l_ else \

688# _getattr(attr, *dflt)

689#

690# return _import_all

691

692

693 def _lazy_import_as(_name_):

694 '''(INTERNAL) Return a function to C{import B{__name__}.mod as mod}

695 I{of modules only}, see .deprecated, .rhumb or get an attribute

696 lazily exported by C{__name__}.

697 '''

698 if _unlazy:

699 return None

700

701 def _import_as(mod):

702 try:

703 return _ALL_MODS.getmodule(_DOT_(_name_, mod))

704 except ImportError:

705 return _lazy_attr(mod)

706

707 return _import_as

708

709

710# def _lazy_import_star(_name_, ALL_=_ALL_DEPRECATES):

711# '''(INTERNAL) Return a function to mimick C{from B{__name__} import *},

712# of all DEPRECATED items, see .deprecated, .testDeprecated

713# '''

714# if _unlazy:

715# raise AssertionError(_COMMASPACE_(_name_, _not_(_DEPRECATED_)))

716#

717# def _import_star(_into_):

718# '''Do C{from B{__name__} import *} inside module C{B{__into__}}.

719# '''

720# d = dict()

721# nm = _tailof(_name_)

722# _g = _ALL_MODS.getattr # pygeodesy.__getattr__

723# _h = _headof

724# for a, m in ALL_.items():

725# if _h(m) == nm:

726# try:

727# d[a] = _g(m, a)

728# except (AttributeError, ImportError):

729# pass

730# _sys.modules[_into_].__dict__.update(d)

731# return d.keys() # imported names

732#

733# return _import_star

734

735

736# def _lazy_subs(_name_, force=_FOR_DOCS, over=False):

737# '''(INTERNAL) Return the names of a package's sub-packages and

738# update the package's C{__dict__} accordingly.

739# '''

740# sm = dict()

741# if force and _name_ != '__main__':

742# nm = _tailof(_name_)

743# _a = _ALL_MODS.getattr

744# _m = _ALL_MODS.getmodule

745# d = _a(_name_, '__dict__', {})

746# for n in _a(_name_, _a_l_l_, ()):

747# try: # n is a class name, get its mod name

748# m = _a(_name_, n).__module__

749# n, s = m.split(_DOT_)[-2:]

750# if n == nm and s not in sm:

751# # like import m as s

752# m = _m(m)

753# sm[s] = m if over else d.get(s, m)

754# except (AttributeError, ImportError, ValueError) as x:

755# pass

756# d.update(sm)

757#

758# return _ALL_OTHER(*sm.values())

759

760

761 def _lazy_init2(pack):

762 '''(INTERNAL) Initialize lazy import and set globals C{isLazy} and C{_unLazy0}.

763

764 @arg pack: The name of the package (C{str}) performing the imports,

765 to help resolving relative imports, usually C{__package__}.

766

767 @return: 2-Tuple C{(package, parent)} with the importing C{package}

768 for easy reference within itself and its name aka the

769 C{parent}, same as B{C{pack}}.

770

771 @raise LazyImportError: Lazy import not supported or not enabled,

772 an import failed or the package name is

773 invalid or does not exist.

774

775 @note: Global C{isLazy} is set accordingly.

776 '''

777 global isLazy, _unLazy0

778

779 z = _getenv(_PYGEODESY_LAZY_IMPORT_, None)

780 if z is None: # _PYGEODESY_LAZY_IMPORT_ not set

781 isLazy = 1 # ... but only by default on 3.7

782 else:

783 z = z.strip() # like PYTHONVERBOSE et.al.

784 isLazy = int(z) if z.isdigit() else (1 if z else 0)

785

786 _unLazy0 = _unlazy or not isLazy # pre-3.7 or w/o lazy import

787

788 if isLazy < 1: # not enabled

789 raise LazyImportError(_PYGEODESY_LAZY_IMPORT_, repr(z), txt=_not_(_enabled_))

790 if _getenv('PYTHONVERBOSE', None): # PYCHOK no cover

791 isLazy += 1

792

793 try: # to initialize in Python 3+

794 package = import_module(pack)

795 parent = package.__spec__.parent # __spec__ only in Python 3.7+

796 if parent != pack: # assert

797 t = _COMMASPACE_(parent, _not_(pack)) # PYCHOK no cover

798 raise AttributeError(_EQUALSPACED_('parent', t))

799

800 except (AttributeError, ImportError) as x:

801 isLazy = False # failed

802 raise LazyImportError(_lazy_init2.__name__, pack, cause=x)

803

804 return package, parent

805

806

807 def _pairs(*args, **kwds): # in .errors, .ktm

808 # from pygeodesy.streprs import pairs

809 return _ALL_MODS.streprs.pairs(*args, **kwds)

810

811

812 def print_(*args, **nl_nt_prefix_end_file_flush_sep): # PYCHOK no cover

813 '''Python 3+ C{print}-like formatting and printing.

814

815 @arg args: Arguments to be converted to C{str} and joined by B{C{sep}}

816 (any C{type}, all positional).

817 @kwarg nl_nt_prefix_end_file_flush_sep: Keyword arguments C{B{nl}=0}

818 for the number of leading blank lines (C{int}), C{B{nt}=0}

819 the number of trailing blank lines (C{int}), C{B{prefix}=NN}

820 to be inserted before the formatted text (C{str}) and Python

821 3+ C{print} keyword arguments C{B{end}}, C{B{sep}}, C{B{file}}

822 and C{B{flush}}.

823

824 @return: Number of bytes written.

825 '''

826 return printf(NN, *args, **nl_nt_prefix_end_file_flush_sep)

827

828

829 def printf(fmt, *args, **nl_nt_prefix_end_file_flush_sep_kwds):

830 '''C{Printf-style} and Python 3+ C{print}-like formatting and printing.

831

832 @arg fmt: U{Printf-style<https://Docs.Python.org/3/library/stdtypes.html#

833 printf-style-string-formatting>} format specification (C{str}).

834 @arg args: Arguments to be formatted (any C{type}, all positional).

835 @kwarg nl_nt_prefix_end_file_flush_sep_kwds: Keyword arguments C{B{nl}=0}

836 for the number of leading blank lines (C{int}), C{B{nt}=0} the

837 number of trailing blank lines (C{int}), C{B{prefix}=NN} to

838 be inserted before the formatted text (C{str}) and Python 3+

839 C{print} keyword arguments C{B{end}}, C{B{sep}}, C{B{file}} and

840 C{B{flush}}. Any remaining C{B{kwds}} are U{printf-style

841 <https://Docs.Python.org/3/library/stdtypes.html#printf-style-string-formatting>}

842 keyword arguments to be formatted, I{iff no B{C{args}} are present}.

843

844 @return: Number of bytes written.

845 '''

846 b, e, s, f, fl, p, kwds = _xprint7(**nl_nt_prefix_end_file_flush_sep_kwds)

847 try:

848 if args:

849 t = (fmt % args) if fmt else s.join(map(str, args))

850 elif kwds: # PYCHOK no cover

851 t = (fmt % kwds) if fmt else s.join(_pairs(kwds, prec=p))

852 else: # PYCHOK no cover

853 t = fmt

854 except Exception as x:

855 _E, s = _ALL_MODS.errors._xError2(x)

856 unstr = _ALL_MODS.streprs.unstr

857 t = unstr(printf, fmt, *args, **nl_nt_prefix_end_file_flush_sep_kwds)

858 raise _E(s, txt=t, cause=x)

859 try:

860 n = f.write(NN(b, t, e))

861 except UnicodeEncodeError: # XXX only Windows

862 t = t.replace('\u2032', _QUOTE1_).replace('\u2033', _QUOTE2_)

863 n = f.write(NN(b, t, e))

864 if fl: # PYCHOK no cover

865 f.flush()

866 return n

867

868

869 def _xprint7(nl=0, nt=0, prec=6, prefix=NN, sep=_SPACE_, file=_sys.stdout,

870 end=_NL_, flush=False, **kwds):

871 '''(INTERNAL) Unravel the C{printf} and remaining keyword arguments.

872 '''

873 if nl > 0:

874 prefix = NN(_NL_ * nl, prefix)

875 if nt > 0:

876 end = NN(end, _NL_ * nt)

877 return prefix, end, sep, file, flush, prec, kwds

878

879

880# del _i, _i0, _intern

881

882 if __name__ == '__main__':

883

884 from timeit import timeit

885

886 def t1():

887 from pygeodesy.trf import RefFrame

888 return RefFrame

889

890 def t2():

891 return _ALL_MODS.trf.RefFrame

892

893 assert t1() is t2() # prime each

894

895 t1 = timeit(t1, number=1000000)

896 t2 = timeit(t2, number=1000000)

897 v = _Python_(_sys.version)

898 printf('%.8f import vs %.8f _ALL_MODS: %.3fX, %s', t1, t2, t2 / t1, v)

899 del t1, t2, v

900

901# python3.12 -m pygeodesy.lazily

902# 0.13352763 import vs 0.70804508 _ALL_MODS: 5.303X, Python 3.12.0

903

904# % python3.11 -W ignore -m pygeodesy.lazily

905# 0.37998008 import vs 0.79537812 _ALL_MODS: 2.093X, Python 3.11.5

906

907# % python3.10 -W ignore -m pygeodesy.lazily

908# 0.39046367 import vs 0.90492925 _ALL_MODS: 2.318X, Python 3.10.8

909

910# % python2 -m pygeodesy.lazily

911# 1.17563510 import vs 2.02626395 _ALL_MODS: 1.724X, Python 2.7.18

912

913# **) MIT License

914#

915# Copyright (C) 2018-2023 -- mrJean1 at Gmail -- All Rights Reserved.

916#

917# Permission is hereby granted, free of charge, to any person obtaining a

918# copy of this software and associated documentation files (the "Software"),

919# to deal in the Software without restriction, including without limitation

920# the rights to use, copy, modify, merge, publish, distribute, sublicense,

921# and/or sell copies of the Software, and to permit persons to whom the

922# Software is furnished to do so, subject to the following conditions:

923#

924# The above copyright notice and this permission notice shall be included

925# in all copies or substantial portions of the Software.

926#

927# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

928# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

929# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

930# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR

931# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

932# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

933# OTHER DEALINGS IN THE SOFTWARE.