Tuple-Literal

Sourcery rule id: tuple-literal

Description

Replace tuple() with ()

Before

x = tuple()

After

x = ()

Explanation

The most concise and Pythonic way to create an empty tuple is to use the () literal.

This fits in with the way we create tuples with items, saving a bit of mental energy that might be taken up with thinking about two different ways of creating tuples:

x = ("first", "second")

Doing things this way has the added advantage of being a nice little performance improvement. Here are the timings before and after the change:

$ python3 -m timeit "tuple()"
10000000 loops, best of 5: 22.6 nsec per loop

$ python3 -m timeit "()"
50000000 loops, best of 5: 5.46 nsec per loop