introspection.py 文件源码

def installed_python_packages():

    """
    This function ...
    :return:
    """

    # Initialize dictionary to contain the package names and version numbers
    packages = dict()

    # Get all python distributions
    distributions = pip.get_installed_distributions()

    # Loop over the distributions
    for distribution in distributions:

        # Get name and version
        top_level_meta_data = list(distribution._get_metadata('top_level.txt'))
        import_name = top_level_meta_data[0] if len(top_level_meta_data) > 0 else distribution.project_name
        version = str(distribution.parsed_version)

        # possible other interesting properties of an entry in the distributions list:
        # .egg_name()
        # .as_requirement()
        # .parsed_version
        # .has_version()
        # .project_name
        # .py_version
        # .requires()

        # Add entry to the dictionary
        packages[import_name] = version

    # Return the dictionary
    return packages

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