pylint-errors
R1707 (trailing-comma-tuple)
Problematic code:
t = 1,
print(t)
Correct code:
t = (1,)
print(t)
Rationale:
In Python, a tuple is actually created by the comma symbol, not by the parentheses. Unfortunately, one can actually create a tuple by misplacing a trailing comma, which can lead to potential weird bugs in your code. You should always use parentheses explicitly for creating a tuple.