ArgumentParser.print_help(file=None) Print a help message, including the program usage and information about the arguments registered with the ArgumentParser. If file is None, sys.stdout is assumed.

ZipInfo.extract_version PKZIP version needed to extract archive.

is_free() Return True if the symbol is referenced in its block, but not assigned to.

class asyncore.file_dispatcher A file_dispatcher takes a file descriptor or file object along with an optional map argument and wraps it for use with the poll() or loop() functions. If provided a file object or anything with a fileno() method, that method will be called and passed to the file_wrapper constructor. Availability: UNIX.

keys() Return a list of all the message’s header field names.

write_eof() Write an EOF marker to the memory BIO. After this method has been called, it is illegal to call write(). The attribute eof will become true after all data currently in the buffer has been read.

class decimal.Overflow Numerical overflow. Indicates the exponent is larger than Emax after rounding has occurred. If not trapped, the result depends on the rounding mode, either pulling inward to the largest representable finite number or rounding outward to Infinity. In either case, Inexact and Rounded are also signaled.

str.replace(old, new[, count]) Return a copy of the string with all occurrences of substring old replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

DictWriter.writeheader() Write a row with the field names (as specified in the constructor). New in version 3.2.

address The address used by the manager.