[issue27439] product function patch

[Utkan Gezer]

Utkan Gezer added the comment:

The use case is similar to the use case of sum() function, which is analogous to the sigma notation in mathematics, and is analogous to the use case of the pi notation in mathematics.

Regular loop should be equally enough to achieve the function of sum(), yet the sum() exists. Only apparent (to me) difference between the sum() and product() is that sum() is already built-in while product() is yet to be.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27439>
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