Get parent function

Question

Is there a way to find what function called the current function? So for example:

def first():
    second()

def second():
    # print out here what function         


        

Answer 1

These work well for quickly adding minimal where-am-I debugging aids when you don't want to import yet another module. (CPython only, for debugging only.)

def LINE( back = 0 ):
    return sys._getframe( back + 1 ).f_lineno
def FILE( back = 0 ):
    return sys._getframe( back + 1 ).f_code.co_filename
def FUNC( back = 0):
    return sys._getframe( back + 1 ).f_code.co_name
def WHERE( back = 0 ):
    frame = sys._getframe( back + 1 )
    return "%s/%s %s()" % ( os.path.basename( frame.f_code.co_filename ),
                            frame.f_lineno, frame.f_code.co_name )

Example:

import sys, os # these you almost always have...

def WHERE( back = 0 ):
    frame = sys._getframe( back + 1 )
    return "%s/%s %s()" % ( os.path.basename( frame.f_code.co_filename ),
                        frame.f_lineno, frame.f_code.co_name )

def first():
    second()

def second():
    print WHERE()
    print WHERE(1)

first()

Output:

$ python fs.py
fs.py/12 second()
fs.py/9 first()