GeoPy は 1.13.0 から geographiclib という C++ で書かれたライブラリに依存していると Changelog に書かれている。GitHub のソースを見ても、1.13.0 から setup.py に "INSTALL_REQUIRES = [ 'geographiclib<2,>=1.49', ]" が追加されている。
Changelog — GeoPy 1.21.0 documentation1.13.0
2018-04-12
（中略）
ADDED: More accurate algorithm for distance computation geopy.distance.geodesic, which is now a default geopy.distance.distance. Vincenty usage is now discouraged in favor of the geodesic. This also has added a dependency of geopy on geographiclib package. Contributed by Charles Karney. (#144)
#!/usr/bin/env python """ geopy """ from setuptools import setup, find_packages from geopy import __version__ as version INSTALL_REQUIRES = [] setup( name='geopy', version=version, description='Python Geocoding Toolbox', long_description=open('README.rst').read(), author='GeoPy Contributors', author_email='uijllji@gmail.com', url='https://github.com/geopy/geopy', download_url=( 'https://github.com/geopy/geopy/archive/%s.tar.gz' % version ), packages=find_packages(exclude=["*test*"]), install_requires=INSTALL_REQUIRES, extras_require={ "placefinder": ["requests_oauthlib<1,>=0.4.0"], "timezone": ["pytz"], }, license='MIT', keywords='geocode geocoding gis geographical maps earth distance', classifiers=[ "Development Status :: 5 - Production/Stable", "Intended Audience :: Developers", "Intended Audience :: Science/Research", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent", "Programming Language :: Python", "Topic :: Scientific/Engineering :: GIS", "Topic :: Software Development :: Libraries :: Python Modules", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Programming Language :: Python :: Implementation :: CPython", "Programming Language :: Python :: Implementation :: PyPy", ] )
#!/usr/bin/env python """ geopy """ from setuptools import setup, find_packages from geopy import __version__ as version INSTALL_REQUIRES = [ 'geographiclib<2,>=1.49', ] setup( name='geopy', version=version, description='Python Geocoding Toolbox', long_description=open('README.rst').read(), author='GeoPy Contributors', author_email='uijllji@gmail.com', url='https://github.com/geopy/geopy', download_url=( 'https://github.com/geopy/geopy/archive/%s.tar.gz' % version ), packages=find_packages(exclude=["*test*"]), install_requires=INSTALL_REQUIRES, extras_require={ "placefinder": ["requests_oauthlib<1,>=0.4.0"], "timezone": ["pytz"], }, license='MIT', keywords='geocode geocoding gis geographical maps earth distance', classifiers=[ "Development Status :: 5 - Production/Stable", "Intended Audience :: Developers", "Intended Audience :: Science/Research", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent", "Programming Language :: Python", "Topic :: Scientific/Engineering :: GIS", "Topic :: Software Development :: Libraries :: Python Modules", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Programming Language :: Python :: Implementation :: CPython", "Programming Language :: Python :: Implementation :: PyPy", ] )
GeographicLib は C++ で書かれたライブラリ。
GeographicLib is a small set of C++ classes for performing conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates, for gravity (e.g., EGM2008), geoid height, and geomagnetic field (e.g., WMM2020) calculations, and for solving geodesic problems. (The library may be used from .NET applications using the NETGeographicLib wrapper library.) It is a suitable replacement for the core functionality provided by geotrans. The library is licensed under the MIT/X11 License; see LICENSE.txt for the terms.
GeographicLib
