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I propose we provide
fileno()
methods and.encoding
properties on fake file objects that replace sys.stdin/stdout/stderr. Applications may use them in ways that work or in ways that don't, but we should just provide them and see what happens.Pro: users can use more libraries with bpython
Con: code may break in less expected ways that the straightforward attribute errors they break on now, e.g. the display may break when a program writes directly to sys.stdout.fileno() because that won't be caught by bpython