Python vars() global name error

Question

I\'m having a bit of trouble understanding what\'s going wrong with the following function:

def ness():
 pie=\'yum\'
 vars()[pie]=4
 print vars()[pie]
 print yum         


        

Answer 1

There is way to do it with exec

>>> def ness():
...  pie='yum'
...  exec pie+"=4"
...  print vars()[pie]
...  print yum
...
>>>
>>> ness()
4
4

But Instead of doing that, using a new dict is better and safe

>>> def ness():
...  dic={}
...  pie='yum'
...  dic[pie]=4
...  print dic[pie]
...  print dic['yum']
...
>>> ness()
4
4
>>>