The problem that is repeatedly being faced is that pycharm tends to read and display a different format file with a completely different format. This QA gives step by step solution to resolve this issue for any of the formats.
Go to File > Settings > Editor > FileTypes
From this screen you have two lists. Go to recognised file types and select text
Then from the bottom menu scroll to .whl format or the one which you want not to be read as text and select it.
Now click the minus sign (-) on the right and click OK.