Get the file path of a class, function or Python module as pydoc and open it into your editor

getmodulepath.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Author: Damien Garaud
# Date: 2014
# License: Simplified BSD

"""Open a Python module in you editor when you're looking for a class, function
or module name.

Usage:

  # For a module
  > ./getmodulepath.py os.path
  # For a function
  > ./getmodulepath.py numpy.ones
  # For a class
  > ./getmodulepath.py pandas.DataFrame

Note: getmodulepath.py must be executable.
Put this in your PATH, rename it or create an alias.
"""

from __future__ import print_function

import sys
import subprocess
import inspect

import pydoc

EDITOR = 'emacsclient'
OPTIONS = '-n'

def _getmodule_filepath(module):
    return inspect.getabsfile(module)

def _try_get_module_path(name):
    instance, name = pydoc.resolve(name)
    if inspect.ismodule(instance):
        return _getmodule_filepath(instance)

if len(sys.argv) != 2:
    print("Take one argument: [module/class/func] NAME")
    sys.exit(1)

module_name = sys.argv[1]
instance, name = pydoc.resolve(module_name)
if inspect.ismodule(instance):
    fpath = _getmodule_filepath(instance)
elif inspect.isbuiltin(instance):
    fpath = _getmodule_filepath(inspect.getmodule(instance))
else: # function or class
    fpath = _try_get_module_path(instance.__module__)
print("Open '{}' with {}".format(fpath, EDITOR))
subprocess.call([EDITOR, OPTIONS, fpath])