Option to disable the progress bar or to specify stdout instead of stderr

[lelit]

It would be nice having an option to disable the progress bar in the upload command, or alternatively to have a way to specify it should be printed on stdout instead of stderr (tqdm accepts a file argument for that).

My use case is the following: I'm using twine to upload wheels built on ci.appveyor.com, and even if the command succeeds (the wheels do appear on PyPI), the appveyor log contains a red warning. I'm told that apparently the appveyor machinery (or Windows itself?) unconditionally considers anything written on stderr as an error message.

[Daviejoe100]

Hello what should I do i have no clue of technology

[mzwiessele]

Same problem here...

[mgedmin]

StackOverflow claims it's the PowerShell host (whatever it is) that interprets stderr output as a terrible terrible error happening somewhere: https://stackoverflow.com/questions/44632416/upload-using-twine-in-appveyor-using-ps

[sigmavirus24]

Thanks for reporting this and I'm sincerely sorry for the delay. I lost track of this issue. I'd happily merge a pull request that does the right thing here (probably using the file argument to tqdm to specify stdout)