[issue17198] dbm.whichdb references unitialized 'ndbm' variable

[Valentina Mukhamedzhanova]

Valentina Mukhamedzhanova added the comment:

I added a testcase to demonstrate the bug and an import of ndbm to dbm.__init__.py to fix the bug.

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nosy: +umi
Added file: http://bugs.python.org/file30839/patch_17198

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<http://bugs.python.org/issue17198>
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