24

Ok I know you can use the dir() method to list everything in a module, but is there any way to see only the functions that are defined in that module? For example, assume my module looks like this:

from datetime import date, datetime

def test():
    return "This is a real method"

Even if i use inspect() to filter out the builtins, I'm still left with anything that was imported. E.g I'll see:

['date', 'datetime', 'test']

Is there any way to exclude imports? Or another way to find out what's defined in a module?

Improve this question
3
  • 1
    What's wrong with reading the source? Commented Jul 9, 2009 at 23:14
  • In Python, "method" is generally only used to refer to functions that are attributes of a class. Your test() is better referred to as a "function". Commented Jul 10, 2009 at 0:06
  • Does this answer your question? Getting a list of locally-defined functions in python Commented Jul 12, 2020 at 1:58

6 Answers 6

Reset to default
32

Are you looking for something like this?

import sys, inspect

def is_mod_function(mod, func):
    return inspect.isfunction(func) and inspect.getmodule(func) == mod

def list_functions(mod):
    return [func.__name__ for func in mod.__dict__.itervalues() 
            if is_mod_function(mod, func)]


print 'functions in current module:\n', list_functions(sys.modules[__name__])
print 'functions in inspect module:\n', list_functions(inspect)

EDIT: Changed variable names from 'meth' to 'func' to avoid confusion (we're dealing with functions, not methods, here).

Improve this answer
Sign up to request clarification or add additional context in comments.

3 Comments

@ars Couldn't you just replace your functions with [f[1] for f in inspect.getmembers(mod) if inspect.isfunction(f[1])] and get the same results?
Nevermind, that would include imported functions, still need the getmodule(func) == mod for it to work, but still one-ish liner.
Is there a way to make this work with decorated functions?
5

How about the following:

grep ^def my_module.py
Improve this answer

1 Comment

It's a quick and dirty solution that works. It may not be the best solution for your problem but I wouldn't know because I don't know what problem you're trying to solve.
2

You can check __module__ attribute of the function in question. I say "function" because a method belongs to a class usually ;-).

BTW, a class actually also has __module__ attribute.

Improve this answer

Comments

1

Every class in python has a __module__ attribute. You can use its value to perform filtering. Take a look at example 6.14 in dive into python

Improve this answer

1 Comment

Functions have the __module__ attribute too.
0

the python inspect module is probably what you're looking for here.

import inspect
if inspect.ismethod(methodInQuestion):
    pass # It's a method
Improve this answer

2 Comments

Looks like it would work in combination with Stefano's answer. You can see what's a method and what's imported.
I'm commenting on this post because my rep is under 50. Functions have module attribute too.
0 
import inspect, sys

def get_module_func(module):
    is_function_in_module = lambda obj: inspect.isfunction(obj) and inspect.getmodule(obj) == module
    return inspect.getmembers(module, is_function_in_module)

get_module_func(sys.modules[__name__])
Improve this answer

1 Comment

Answer needs supporting information Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.