Berker Peksag added the comment: Thanks for the report! The default values of fp and environ parameters are already documented in the function signature in Python 3: cgi.parse(fp=None, environ=os.environ, keep_blank_values=False, strict_parsing=False) In Python 2, the function signature is: cgi.parse(fp[, environ[, keep_blank_values[, strict_parsing]]]) Since the default values cannot be documented in the latter form, we need to specify them separately in plain text. The reason why "(the file defaults to ``sys.stdin``)" is still in Python 3 documentation is because of the following two lines in cgi.parse() implementation: if fp is None: fp = sys.stdin So if you invoke cgi.parse() (which means fp is None) it will be replaced with sys.stdin. ---------- resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue24626> _______________________________________