See what Python module instantised a class?

Question

Is it possible in a Python class to see the name (or other identifier) of the class or module that instantises it?

For example:

# mymodule.py

class MyClass():
    def __init__(self):
        print(instantised_by)

#main.py

from mymodule import MyClass

instance = MyClass()

Running main.py should print:

main

or something like that.

Is this possible?

score 0 · Accepted Answer · edited May 23 '17 at 12:01

0

You can inspect the stack informations with inspect to get the caller stack from __init__ (remember, it's just a function). From that you can get informations such as the caller function name, module name etc.

See this question: Get __name__ of calling function's module in Python.

edited May 23 '17 at 12:01

Community

1
1

answered Sep 10 '16 at 09:29

kjaquier

824
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score 0 · Answer 2 · answered Sep 10 '16 at 09:31

0

With traceback module:

import traceback

class MyClass():
    def __init__(self):
       file,line,w1,w2 = traceback.extract_stack()[1]
       print(w1)

answered Sep 10 '16 at 09:31

Jean-François Fabre

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this will print `__init__` – Paulo Scardine Sep 10 '16 at 09:42
nope, it prints `main` when running from `main.py`. Test it you'll see. – Jean-François Fabre Sep 10 '16 at 10:28

See what Python module instantised a class?

2 Answers2