35 lines
924 B
Python
35 lines
924 B
Python
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import sys
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import re
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from importlib import import_module
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def canonicalize_dist_name(name):
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# https://packaging.python.org/guides/distributing-packages-using-setuptools/#name
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name = name.lower().replace('-', '.').replace('_', '.')
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name = re.sub(r'\.+', '.', name)
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return name
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def guess_version(pkg_key, default='?'):
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"""Guess the version of a pkg when pip doesn't provide it
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:param str pkg_key: key of the package
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:param str default: default version to return if unable to find
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:returns: version
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:rtype: string
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"""
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try:
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m = import_module(pkg_key)
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except ImportError:
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return default
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else:
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return getattr(m, '__version__', default)
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def is_string(obj):
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"""Check whether an object is a string"""
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if sys.version_info < (3,):
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# Python 2.x only
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return isinstance(obj, basestring)
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else:
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return isinstance(obj, str)
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