I'm trying to create a class variable and assign the name of the function calling that class, which is being imported from a separate .py. But nothing seems to be working.

File 1 (caller)

from file2 import A

def func():  # <-- Function name I want to get
    a = A()  # Initializing class A

File 2 (where class A is)

class A:
    
    func_name = ...  # <-- Where I would like to get the caller function name (func)
    
    def __init__(self):
        ...

I've tried:

• inspect.stack()[1][3]
• inspect.currentframe().f_back.f_code.co_name
• inspect.getframeinfo(sys._getframe(1))[2]
• sys._getframe(1).f_code.co_name

But so far all I'm getting is either: <module> or <frozen importlib._bootstrap>, so I'm wondering if it's possible to get the caller's function name if the class is being imported in a separate file.

I'm trying to create a class variable and assign the name of the function calling that class, which is being imported from a separate .py. But nothing seems to be working.

File 1 (caller)

from file2 import A

def func():  # <-- Function name I want to get
    a = A()  # Initializing class A

File 2 (where class A is)

class A:
    
    func_name = ...  # <-- Where I would like to get the caller function name (func)
    
    def __init__(self):
        ...

I've tried:

• inspect.stack()[1][3]
• inspect.currentframe().f_back.f_code.co_name
• inspect.getframeinfo(sys._getframe(1))[2]
• sys._getframe(1).f_code.co_name

But so far all I'm getting is either: <module> or <frozen importlib._bootstrap>, so I'm wondering if it's possible to get the caller's function name if the class is being imported in a separate file.

• python

• 2 FWIW, except for debugging purposes, you should hardly ever do this for any reason. – deceze ♦ Commented Feb 6 at 8:06
• 1 Also, you need to do the stack trace in __init__, not in the class definition…!? – deceze ♦ Commented Feb 6 at 8:07
• Also, you should show exactly what you tried along with actual and desired results, including tracebacks, if any. Make a minimal reproducible example. – Mark Tolonen Commented Feb 6 at 8:11
• 2 This shouts XY problem to me. What use would knowing the calling function be to the class? If it relies on that information to change behaviour, something has gone wrong with the setup – roganjosh Commented Feb 6 at 8:11
• Your attempts would work if you did them in __init__ rather than in the class definition, where the caller is the import system. – blhsing Commented Feb 6 at 8:18

1 Answer 1

Try this at file2 (where class A is):

class A:
    def __init__(self):
        import inspect
        __f = inspect.getframeinfo(inspect.currentframe().f_back)
        __func = __f.function
        self.func_name = __func