Fix explicit tuple parameters for Python 3

Description

$ _futurize -f lib2to3.fixes.fix_tuple_param -w ._

This PR addresses two new syntax errors introduced in Python 3:
1. Explicit tuples can not be function parameters in Python 3: _def func(a, (b, c)):_
2. Lambda parameters must have no parenthesis in Python 3: _lambda : x_

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Ned Batchelder

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Open Source Pull Request Bot

Contributor Name

Christian C. Clauss

Repo

edx/edx-platform

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