[issue15610] PyImport_ImportModuleEx always fails in 3.3 with "ValueError: level must be >= 0"

[Dave Malcolm]

Dave Malcolm added the comment:

On Thu, 2012-08-09 at 21:04 +0000, STINNER Victor wrote:
> STINNER Victor added the comment:
> 
> Oh, I didn't realize that the documentation says that the default value is -1.
> http://docs.python.org/library/functions.html#__import__
> 
> "level specifies whether to use absolute or relative imports. The default is -1 which indicates both absolute and relative imports will be attempted. 0 means only perform absolute imports. Positive values for level indicate the number of parent directories to search relative to the directory of the module calling __import__()."
That's the python 2 documentation

The 3.3 docs here:
  http://docs.python.org/dev/library/functions.html#__import__
say "Changed in version 3.3: Negative values for level are no longer
supported (which also changes the default value to 0)."

> We should probably tolerate -1, or just drop the exception.

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<http://bugs.python.org/issue15610>
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