CODEWITHSUNDEEP
pythonscopeglobalnameerrortimeit
imgoingmad
imgoingmad

Reputation: 95

Global name "x" not defined using timeit

I've got a simple Fibonacci function that uses memoisation and it works just fine on its own. However when I want to time it using timeit, I get "NameError: global name 'memo' is not defined", even though it is.

#!/usr/bin/python

import sys
import timeit

memo = [0] * 100

def fibmem(n,memo):
    #function things

for x in range(1,40):

    mytime2 = timeit.Timer('fibmem('+str(x)+', memo)','from __main__ import fibmem')
    delta2 = mytime2.timeit(1)
    print str(x) + ' ' +str(delta2)
    memo[:] = []

I've tried looking up what it might be, but most of the answers involve including the from __main__ import and that isn't the problem here. I'm sure it's still something to do with scoping, but I am very new to timeit, so I have no idea.

Upvotes: 0

Views: 1356

Answers (1)

unutbu
unutbu

Reputation: 880757

Add memo to the list of variables imported from __main__:

mytime2 = timeit.Timer('fibmem({}, memo)'.format(x),'from __main__ import fibmem, memo')

Upvotes: 5

Related Questions