edpy

#!/usr/bin/env python

# Edit a Python module using its module name rather than filesystem path.
# Designed to work from an import line as well ("import X" or
# "from X import Y") for easier copy and paste.
# e.g. 'edpy tempfile'
#      'edpy calendar.Calendar' -- takes you directly to the class
#      'edpy calendar.Calendar.monthdayscalendar' -- takes you directly to the method
#      'edpy from calendar.Calendar import monthdayscalendar' -- same as above

# Author: David McClosky
# Homepage: http://zorglish.org
# Code: http://github.com/dmcc

# vi: syntax=python

import sys, inspect, os

args = sys.argv[1:]
editor_args = []
pieces = []
for piece in args:
    if piece[0] == '-':
        editor_args.append(piece)
    else:
        pieces.extend(piece.split('.'))
pieces = [p for p in pieces if p not in ('from', 'import', 'as')]

obj_pieces = []
while 1:
    try:
        modulename = '.'.join(pieces)
        module = __import__(modulename, globals(), locals(), modulename)
        break
    except ImportError:
        obj_pieces.insert(0, pieces.pop(-1))

obj = module
while obj_pieces:
    obj = getattr(obj, obj_pieces.pop(0))

filename = inspect.getsourcefile(obj).replace('.pyc', '.py')
lines, lineno = inspect.findsource(obj)

editor = os.getenv('EDITOR', 'vi')
# seems vi and emacs support this
if ('vi' in editor or 'emacs' in editor) and lineno is not None:
    editor_args.append('+%d' % (lineno + 1))

command = "{} {} {}".format(editor, ' '.join(editor_args), filename)
print("Running", repr(command))
os.system(command)