mypy

fd9ffb89 - [mypyc] Fix for loop over range mutating start variable (#8672)

[mypyc] Fix for loop over range mutating start variable (#8672) Don't modify the range start variable in a loop like this: ``` def f() -> None: n = 0 for x in range(n, 5): pass print(n) # Should be 0, not 5 ```