.. module:: uu :synopsis: Encode and decode files in uuencode format.
.. moduleauthor:: Lance Ellinghouse
Source code: :source:`Lib/uu.py`
This module encodes and decodes files in uuencode format, allowing arbitrary
binary data to be transferred over ASCII-only connections. Wherever a file
argument is expected, the methods accept a file-like object. For backwards
compatibility, a string containing a pathname is also accepted, and the
corresponding file will be opened for reading and writing; the pathname '-'
is understood to mean the standard input or output. However, this interface is
deprecated; it's better for the caller to open the file itself, and be sure
that, when required, the mode is 'rb' or 'wb' on Windows.
.. index:: single: Jansen, Jack single: Ellinghouse, Lance
This code was contributed by Lance Ellinghouse, and modified by Jack Jansen.
The :mod:`uu` module defines the following functions:
.. function:: encode(in_file, out_file, name=None, mode=None, *, backtick=False) Uuencode file *in_file* into file *out_file*. The uuencoded file will have the header specifying *name* and *mode* as the defaults for the results of decoding the file. The default defaults are taken from *in_file*, or ``'-'`` and ``0o666`` respectively. If *backtick* is true, zeros are represented by ``'`'`` instead of spaces. .. versionchanged:: 3.7 Added the *backtick* parameter.
.. function:: decode(in_file, out_file=None, mode=None, quiet=False) This call decodes uuencoded file *in_file* placing the result on file *out_file*. If *out_file* is a pathname, *mode* is used to set the permission bits if the file must be created. Defaults for *out_file* and *mode* are taken from the uuencode header. However, if the file specified in the header already exists, a :exc:`uu.Error` is raised. :func:`decode` may print a warning to standard error if the input was produced by an incorrect uuencoder and Python could recover from that error. Setting *quiet* to a true value silences this warning.
.. exception:: Error() Subclass of :exc:`Exception`, this can be raised by :func:`uu.decode` under various situations, such as described above, but also including a badly formatted header, or truncated input file.
.. seealso:: Module :mod:`binascii` Support module containing ASCII-to-binary and binary-to-ASCII conversions.
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