[docs] [issue16225] list.remove in for loop

[Chris Jerdonek]

Chris Jerdonek added the comment:

> It is safe to modify a sequence during iteration if it's size not increased.

What do you mean by "safe"?  The example given by the original commenter does not increase the size either.  I believe "safe" is meant in the sense of avoiding possibly unexpected behavior.  I can clarify the language if you feel it is ambiguous.

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<http://bugs.python.org/issue16225>
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