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64 lines
2.5 KiB
64 lines
2.5 KiB
:mod:`quopri` --- Encode and decode MIME quoted-printable data
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==============================================================
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.. module:: quopri
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:synopsis: Encode and decode files using the MIME quoted-printable encoding.
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**Source code:** :source:`Lib/quopri.py`
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.. index::
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pair: quoted-printable; encoding
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single: MIME; quoted-printable encoding
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--------------
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This module performs quoted-printable transport encoding and decoding, as
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defined in :rfc:`1521`: "MIME (Multipurpose Internet Mail Extensions) Part One:
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Mechanisms for Specifying and Describing the Format of Internet Message Bodies".
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The quoted-printable encoding is designed for data where there are relatively
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few nonprintable characters; the base64 encoding scheme available via the
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:mod:`base64` module is more compact if there are many such characters, as when
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sending a graphics file.
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.. function:: decode(input, output, header=False)
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Decode the contents of the *input* file and write the resulting decoded binary
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data to the *output* file. *input* and *output* must be :term:`binary file objects
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<file object>`. If the optional argument *header* is present and true, underscore
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will be decoded as space. This is used to decode "Q"-encoded headers as
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described in :rfc:`1522`: "MIME (Multipurpose Internet Mail Extensions)
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Part Two: Message Header Extensions for Non-ASCII Text".
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.. function:: encode(input, output, quotetabs, header=False)
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Encode the contents of the *input* file and write the resulting quoted-printable
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data to the *output* file. *input* and *output* must be
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:term:`binary file objects <file object>`. *quotetabs*, a
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non-optional flag which controls whether to encode embedded spaces
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and tabs; when true it encodes such embedded whitespace, and when
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false it leaves them unencoded.
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Note that spaces and tabs appearing at the end of lines are always encoded,
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as per :rfc:`1521`. *header* is a flag which controls if spaces are encoded
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as underscores as per :rfc:`1522`.
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.. function:: decodestring(s, header=False)
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Like :func:`decode`, except that it accepts a source :class:`bytes` and
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returns the corresponding decoded :class:`bytes`.
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.. function:: encodestring(s, quotetabs=False, header=False)
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Like :func:`encode`, except that it accepts a source :class:`bytes` and
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returns the corresponding encoded :class:`bytes`. By default, it sends a
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``False`` value to *quotetabs* parameter of the :func:`encode` function.
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.. seealso::
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Module :mod:`base64`
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Encode and decode MIME base64 data
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