How to programmatically list functions from a module's path?

Question

I need to write a script that reads a certain module (not as an import) and yields a list of its function names.

Something like that:

# script_to_be_listed.py

def function1():
    pass

def function2():
    pass

Where this:

python my_reader_script.py script_to_be_listed.py

Should print this:

function1
function2

I have already tried using inspect and dir but it only works if I import the module (which I don't know exactly what will be given).

If there is no native module to help me out on such task, could you guys suggest me a nice way to do so?

OBS: I'm doing this to automatically create some Lambda functions on AWS and naming them as the functions from script_to_be_listed.py.

docs.python.org/3/library/pyclbr.html

user2357112
– user2357112

2019-10-22 02:18:45 +00:00
Commented Oct 22, 2019 at 2:18 — user2357112
– user2357112, Commented Oct 22, 2019 at 2:18

blhsing · Accepted Answer · 2019-10-22 02:43:44Z

2

To expand on @user2357112's comment, you can use the pyclbr.readmodule_ex function to read a module, iterate through the items of the returning dict, and print the key if the value is an instance of pyclbr.Function:

import pyclbr

for name, obj in pyclbr.readmodule_ex('module_to_be_browsed', ['/path/to/script']).items():
    if isinstance(obj, pyclbr.Function):
        print(name)

answered Oct 22, 2019 at 2:43

blhsing

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1 Comment

Vito Over a year ago

Worked nicely. Thanks for helping me out.

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