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Re: A newbie quesiton: local variable in a nested funciton

From Ben Finney <ben+python@benfinney.id.au>
Newsgroups comp.lang.python
Subject Re: A newbie quesiton: local variable in a nested funciton
Date 2015-12-26 14:41 +1100
Message-ID <mailman.16.1451101299.11925.python-list@python.org> (permalink)
References <d070aa0d-e80f-4efb-a424-351737ddb2fc@googlegroups.com>

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jfong@ms4.hinet.net writes:

> In the first situation, the local variable 'counter' can be referenced
> correctly. But in the second, why a statement added after the print()
> statement can makes this variable "disappear", even the print() won't
> do the right thing. Isn't it wired? please help!

The Python FAQ answers this, even using an example the same as yours
<URL:https://docs.python.org/3/faq/programming.html#why-am-i-getting-an-unboundlocalerror-when-the-variable-has-a-value>.

-- 
 \          “… a Microsoft Certified System Engineer is to information |
  `\     technology as a McDonalds Certified Food Specialist is to the |
_o__)                               culinary arts.” —Michael Bacarella |
Ben Finney

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Thread

A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-25 19:06 -0800
  Re: A newbie quesiton: local variable in a nested funciton Ben Finney <ben+python@benfinney.id.au> - 2015-12-26 14:41 +1100
    Re: A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-26 00:56 -0800
      Re: A newbie quesiton: local variable in a nested funciton Ben Finney <ben+python@benfinney.id.au> - 2015-12-26 20:37 +1100
  Re: A newbie quesiton: local variable in a nested funciton Chris Angelico <rosuav@gmail.com> - 2015-12-26 14:44 +1100
    Re: A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-26 01:07 -0800
      Re: A newbie quesiton: local variable in a nested funciton Chris Angelico <rosuav@gmail.com> - 2015-12-26 20:49 +1100
        Re: A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-26 20:05 -0800
          Re: A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-26 20:11 -0800
            Re: A newbie quesiton: local variable in a nested funciton Chris Angelico <rosuav@gmail.com> - 2015-12-27 17:32 +1100
              Re: A newbie quesiton: local variable in a nested funciton jfong@ms4.hinet.net - 2015-12-27 17:02 -0800
          Re: A newbie quesiton: local variable in a nested funciton Chris Angelico <rosuav@gmail.com> - 2015-12-27 17:22 +1100

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