8 examples of 'pip check version of module' in Python

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@conf
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def check_python_module(conf, module_name, condition=''):
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	"""
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	Check if the selected python interpreter can import the given python module::
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		def configure(conf):
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			conf.check_python_module('pygccxml')
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			conf.check_python_module('re', condition="ver > num(2, 0, 4) and ver <= num(3, 0, 0)")
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	:param module_name: module
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	:type module_name: string
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	"""
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	msg = 'Python module %s' % module_name
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	if condition:
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		msg = '%s (%s)' % (msg, condition)
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	conf.start_msg(msg)
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	try:
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		ret = conf.cmd_and_log(conf.env['PYTHON'] + ['-c', PYTHON_MODULE_TEMPLATE % module_name])
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	except Exception:
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		conf.end_msg(False)
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		conf.fatal('Could not find the python module %r' % module_name)
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	ret = ret.strip()
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	if condition:
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		conf.end_msg(ret)
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		if ret == 'unknown version':
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			conf.fatal('Could not check the %s version' % module_name)
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		from distutils.version import LooseVersion
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		def num(*k):
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			if isinstance(k[0], int):
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				return LooseVersion('.'.join([str(x) for x in k]))
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			else:
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				return LooseVersion(k[0])
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		d = {'num': num, 'ver': LooseVersion(ret)}
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		ev = eval(condition, {}, d)
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		if not ev:
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			conf.fatal('The %s version does not satisfy the requirements' % module_name)
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	else:
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		if ret == 'unknown version':
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			conf.end_msg(True)
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		else:
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			conf.end_msg(ret)

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def CheckVersion(given, required, name):
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    """ For a given set of versions  str *required* and str *given*,
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    where version are usually separated by dots, print whether for
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    the module str *name* the required verion is met or not.
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    """
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    try:
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        req = LooseVersion(required)
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        giv = LooseVersion(given)
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    except:
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        print(" WARNING: Could not verify version of "+name+".")
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        return
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    if req > giv:
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        print(" WARNING: You are using "+name+" v. "+given+\
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              " | Required: "+name+" "+ required)
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    else:
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        print(" OK: "+name+" v. "+given+" | "+required+" required")

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def check_pyinstaller_version():
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    """Using is_module_satisfies() for pyinstaller fails when
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    installed using 'pip install develop.zip' command
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    (PyInstaller Issue #2802)."""
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    # Example version string for dev version of pyinstaller:
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    # > 3.3.dev0+g5dc9557c
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    version = PyInstaller.__version__
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    match = re.search(r"^\d+\.\d+(\.\d+)?", version)
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    if not (match.group(0) >= PYINSTALLER_MIN_VERSION):
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        raise SystemExit("Error: pyinstaller %s or higher is required" % PYINSTALLER_MIN_VERSION)

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def require_module(*modules):
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    commands = list(missing_requirements(*modules))
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    if commands:
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        print("Update in progress: pip install %s --user" % " ".join(commands))
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        if pip.running_under_virtualenv():
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            pip.main(["install"] + commands)
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        else:
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            pip.main(["install", "--user"] + commands)

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def _get_version(module: types.ModuleType) -> packaging.version.Version:
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    version = packaging.version.Version(getattr(module, "__version__", None))
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    if version is None:
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        raise ImportError("Can't determine version for {}".format(module.__name__))
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    return version

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def check_python(version):
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    required_version = tuple(int(i) for i in version.split('.'))
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    actual_version = sys.version_info[:2]
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    assert actual_version >= required_version, (
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        'Must use at least Python %s but have version %d.%d' %
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        (version, actual_version[0], actual_version[1]))

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@staticmethod
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def python_version():
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    """
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    :return: python version object
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    """
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    import sys
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    # version.major, version.minor, version.micro
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    return sys.version_info

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def check_python_version():
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    if sys.version_info < (3, 5):
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        stderr.write("DistAlgo requires Python version 3.5 or newer.\n")
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        return False
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    else:
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        return True