Find pip versions of modules

lookup_module.py

import types
import warnings

def lookup(obj):
    """Take a python object or class and determine the module it's imported
    from and the version of that module.
    """
    if type(obj) == types.ModuleType:
        try:
            module = obj.__name__
            version = obj.__version__
        except AttributeError:
            return
    else:
        try:
            module = obj.__module__.split(".")[0]
            exec("import %s" % (module,))
            version = eval("%s.__version__" % (module, ))
        except AttributeError:
            return
    module = pip_names.get(module, module)
    return (module, version)

pip_names = {
    "skimage": "scikit-image",
    "sklearn": "scikit-learn",
}

pip_version.py

import subprocess

import pandas as pd

"""
Question1: How many pip packages have the same import name as pip install name?
Question2: How many packages have a .__version__ property
"""

modules = subprocess.check_output(["pip","freeze"]).split()
modules = map(lambda m: m.split("==")[0], modules)

data = []

for module in modules:
    module_data = {}
    module_data["pip-name"] = module
    module_data["same_import"] = False
    try:
        import_statement = "import " + module
        exec(import_statement)
        module_data["same_import"] = True
        version = eval(module + ".__version__")
        module_data["has_version"] = True
    except:
        pass
    data.append(module_data)

df = pd.DataFrame(data)
df.to_csv("module_data.csv", index=False)