Python3, flake8 - File type annotation

Question

Trying to annotate a file in my function there is the following issue with my pep8-checker (flake8):

def my_function(myfile: file): pass

gives

'undefined name file ' .

Fair enough - there is no such function in python3 anymore. The only possibility to check for variable is a file-like object is IOBase from io package.

In my case it would mean that I would need to import IOBase from io package just to get a proper annotation.

from io import IOBase
def my_function(myfile: IOBase):
   pass

Is there another way to proper anotate an argument of file-type properly?

Answer 1

You are using or running the wrong version of flake. The code above works perfectly with flake8-2.5.0