'''Question: 
Write a Python program to print the current call stack.
'''

# Python code: 

import traceback

print()

def f1():return abc()

def abc():traceback.print_stack()

f1()

print()



'''Output sample: 
File "7a070e70-25c4-11e7-bc90-3fdc1ec1c64d.py", line 5, in                                          

    f1()                                                                                                      

  File "7a070e70-25c4-11e7-bc90-3fdc1ec1c64d.py", line 3, in f1                                               

    def f1():return abc()                                                                                     

  File "7a070e70-25c4-11e7-bc90-3fdc1ec1c64d.py", line 4, in abc                                              

    def abc():traceback.print_stack() 

	'''