inspecting.py

import inspect

def print_stack():
    print(" -> ".join(
        "{0}:{1}".format(stack[1], stack[2])
        for stack in inspect.stack()
    ))

print_stack()

def some():
    print_stack()


def k():
    some()

k()

import inspect

def print_line():
    stack = inspect.stack()[1]
    print("{0}:{1}".format(stack[1], stack[2]))

print_line()

def some():
    print_line()

def k():
    some()

k()

foo.py:7
foo.py:10