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Python 3 Changes Breaks Backwards Compatibility

Dec 23, 2008, 10:31 (1 Talkback[s])
(Other stories by Cesar Otero)

[ Thanks to An Anonymous Reader for this link. ]

"This article--the first in a series on Python 3--covers the new print() function, input(), changes to input/output (I/O), the new bytes data type, changes to strings and string formatting, and finally, changes to the built-in dict type. This article is meant for programmers who are already familiar with Python and are curious about the changes but don't want to wade through the long list of Python Enhancement Proposals (PEPs). (Links to the PEPs are available in Resources below.)

"The new print() function

"You'll have to retrain your fingers to stop typing print "hello" and start typing print("hello"), because print is now a function, not a statement. I know, it's painful. Every Python programmer I know--as soon as they install version 3 and get the error "incorrect syntax"--screams in agony. I know the extra two characters are annoying; I know this will break backwards compatibility. But there are advantages."

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