r"""Open file and return a stream. Raise IOError upon failure. file is either a text or byte string giving the name (and the path if the file isn't in the current working directory) of the file to be opened or an integer file descriptor of the file to be wrapped. (If a file descrip
(file, mode="r", buffering=-1,
encoding=None, errors=None,
newline=None, closefd=True)
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