[issue30332] Errors that aren't actually defined are purple in the IDLE

[Terry J. Reedy]

Terry J. Reedy added the comment:

You neglected to say which version of Python you used.  2.7? 3.2? When I type the following in 3.5+ on Win10,
>>> IOError, KeyError, PermissionError, int, list, FileNotFoundError
all the names have the same builtins highlight.  In 2.7 (and early 3.x), PermissionError and FileNotFoundError did not exist as builtins and should not get the hightlight.

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versions:  -Python 2.7, Python 3.3, Python 3.4, Python 3.5

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<http://bugs.python.org/issue30332>
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