How to print the function name as a string in Python from inside that function

Question

def applejuice(q):
   print THE FUNCTION NAME!

It should result in "applejuice" as a string.

See http://meta.stackexchange.com/questions/18584/how-to-ask-a-smart-question-on-so/25128#25128 — Lennart Regebro, Oct 08 '09 at 20:39
From the answer you chose we can conclude that this was indeed a duplicate. Indeed, a question almost exactly the same name already existed: http://stackoverflow.com/questions/251464/how-to-get-the-function-name-as-string-in-python — Lennart Regebro, Oct 08 '09 at 21:45
I disagree that this is a duplicate of #251464 -- it seems like this question is the inverse instead. — Mark Chackerian, Nov 10 '12 at 19:09
What should it print in this case : `def applejuice(): print "thefunctionname"; orangejuice = applejuice; del applejuice; orangejuice();` — bruno desthuilliers, Feb 25 '15 at 11:52

score 22 · Accepted Answer · answered Oct 08 '09 at 20:33

22

This also works:

import sys

def applejuice(q):
    func_name = sys._getframe().f_code.co_name
    print func_name

answered Oct 08 '09 at 20:33

Jeff B

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score 11 · Answer 2 · edited May 23 '17 at 12:02

11

def applejuice(**args):
    print "Running the function 'applejuice'"
    pass

or use:

myfunc.__name__

>>> print applejuice.__name__
'applejuice'

Also, see how-to-get-the-function-name-as-string-in-python

edited May 23 '17 at 12:02

Community

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answered Oct 08 '09 at 20:27

Nope

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this isn't from inside the function – joel Sep 03 '19 at 14:24

John Millikin · Answer 3 · 2009-10-08T20:33:44.973

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import traceback

def applejuice(q):
   stack = traceback.extract_stack()
   (filename, line, procname, text) = stack[-1]
   print procname

I assume this is used for debugging, so you might want to look into the other procedures offered by the traceback module. They'll let you print the entire call stack, exception traces, etc.

edited Oct 08 '09 at 20:33

answered Oct 08 '09 at 20:28

John Millikin

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score 3 · Answer 4 · answered Oct 08 '09 at 20:31

3

Another way

import inspect 
def applejuice(q):
    print inspect.getframeinfo(inspect.currentframe())[2]

answered Oct 08 '09 at 20:31

JimB

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score 2 · Answer 5 · answered Oct 08 '09 at 20:23

2

You need to explain what your problem is. Because the answer to your question is:

print "applejuice"

answered Oct 08 '09 at 20:23

Lennart Regebro

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maybe he means: def func(anothah_func): print anothah_func's name – wilhelmtell Oct 08 '09 at 20:27
Well, that's definitely possible. We'll see if he says what the problem is. – Lennart Regebro Oct 08 '09 at 20:38

score 1 · Answer 6 · answered Mar 19 '15 at 17:59

1

This site gave me a decent explanation of how sys._getframe.f_code.co_name works that returns the function name.

http://code.activestate.com/recipes/66062-determining-current-function-name/

answered Mar 19 '15 at 17:59

Sam Stephens

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Wlecome to SO! please, think about providing explanation, and not only pointing to external links. – Stephane Rolland Mar 19 '15 at 18:14

score 0 · Answer 7 · answered Jun 26 '13 at 23:59

def foo():
    # a func can just make a call to itself and fetch the name
    funcName = foo.__name__
    # print it
    print 'Internal: {0}'.format(funcName)
    # return it
    return funcName

# you can fetch the name externally
fooName = foo.__name__
print 'The name of {0} as fetched: {0}'.format(fooName)

# print what name foo returned in this example
whatIsTheName = foo()
print 'The name foo returned is: {0}'.format(whatIsTheName)

How to print the function name as a string in Python from inside that function

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