redundant-open-modes (UP015)

Derived from the pyupgrade linter.

Fix is always available.

What it does

Checks for redundant open mode parameters.

Why is this bad?

Redundant open mode parameters are unnecessary and should be removed to avoid confusion.

Example

with open("foo.txt", "r") as f:
    ...

Use instead:

with open("foo.txt") as f:
    ...

References

• Python documentation: open