How to set global variable with method

Question

abc  = None

def load() :
   abc  = cPickle.load('a.pkl')

load()

def main(review):
   print abc.predict('example')

The variable abc is still set to None. main is accessing abc many times and I don't want to load the file every time. How can I load the contents of the file once?

You could use `global` but that's not the way how it should be done. Use a return value instead. — Matthias, Apr 19 '17 at 14:42

kvorobiev · Accepted Answer · 2017-04-19T15:04:45.577

2

With global keyword

abc  = None

def load() :
   global abc
   abc  = cPickle.load('a.pkl')

load()

def main(review):
   print abc.predict('example')

Without global interpreter will create a new local variable tested in function scope.
But better to use return statement and local variables like

def load() :
   return cPickle.load('a.pkl')

def main(review):
   abc = load()
   print abc.predict('example')

edited Apr 19 '17 at 15:04

answered Apr 19 '17 at 14:42

kvorobiev

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Is that a right approach am I using?? – lucy Apr 19 '17 at 14:59
@lucy Please, see updates – kvorobiev Apr 19 '17 at 15:04
main fun is calling thousand of time. I don't want to load file every time. – lucy Apr 20 '17 at 07:01

score 0 · Answer 2 · answered Apr 19 '17 at 14:42

0

you can declare a global variable with global myvariable

answered Apr 19 '17 at 14:42

Astrom

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How to set global variable with method

2 Answers2