Raymond Hettinger wrote:
>
> Here is my cut at the migration and modernization guide.
>
> Comments are welcome.
>
> Walter and Neal, would you like to add the somewhat more involved steps for
> eliminating the types and strings modules.
Here's some more. Note the last one. Martin wanted to make sure this made
it into whatsnew. I have already changed a few, one in Bdb I think.
I will be changing TclError also. This could be a problem if anyone
assumed these exceptions would be string.
Neal
--
Pattern: import types ; type(v, types.IntType) --> isinstance(v, int)
type(s, types.StringTypes --> isinstance(s, basestring)
Idea: The types module will likely to be deprecated in the future.
Version: 2.2 or greater
Benefits: May be slightly faster, avoid a deprecated feature.
Locating: grep types *.py | grep import
Pattern: import string ; string.method(s, ...) --> s.method(...)
c in string.whitespace --> c.isspace()
Idea: The string module will likely to be deprecated in the future.
Version: 2.0 or greater
Benefits: Slightly faster, avoid a deprecated feature.
Locating: grep string *.py | grep import
Pattern: NewError = 'NewError' --> class NewError(Exception): pass
Idea: String exceptions are deprecated, derive from Exception base class.
Version: Any
Benefits: String exceptions will not work in future versions. Allows except Exception: clause to work.
Locating: Use PyChecker
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