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Correctness
Tempfile
Using ‘F.name′without′.flush()′or′.close()′maycauseanerrorbecausethefilemaynotexistwhen′F.name’ is used. Use ‘.flush()’ or close the file before using ‘$F.name’.
Use tempfile.NamedTemporaryFile instead. From the official Python documentation: THIS FUNCTION IS UNSAFE AND SHOULD NOT BE USED. The file name may refer to a file that did not exist at some point, but by the time you get around to creating it, someone else may have beaten you to the punch.