Change login input

hi ,everyone
my edx version is ironwood
and i want change login input from email to username also like userid
just change settings or python file ?
so how to do ?
thank you in advance !!!
your prompt reply would be deeply appreciated!!

@cypxbl To make sure I understand correctly your question - you would like to avoid asking for an email address, and instead only require the user to provide a username? Currently there isn’t a way to do this in the platform, which heavily relies on having an email address. However, you could go around this by developing a custom SSO provider, which would only ask the user for the information you require, and provide the platform with a fake/random email. You could also modify the platform to not require the use of an email, but that would be a much larger undertaking to do right.