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-Metadata-Version: 2.1
-Name: idna
-Version: 3.6
-Summary: Internationalized Domain Names in Applications (IDNA)
-Author-email: Kim Davies <kim+pypi@gumleaf.org>
-Requires-Python: >=3.5
-Description-Content-Type: text/x-rst
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: Intended Audience :: System Administrators
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3 :: Only
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Programming Language :: Python :: 3.7
-Classifier: Programming Language :: Python :: 3.8
-Classifier: Programming Language :: Python :: 3.9
-Classifier: Programming Language :: Python :: 3.10
-Classifier: Programming Language :: Python :: 3.11
-Classifier: Programming Language :: Python :: 3.12
-Classifier: Programming Language :: Python :: Implementation :: CPython
-Classifier: Programming Language :: Python :: Implementation :: PyPy
-Classifier: Topic :: Internet :: Name Service (DNS)
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Classifier: Topic :: Utilities
-Project-URL: Changelog, https://github.com/kjd/idna/blob/master/HISTORY.rst
-Project-URL: Issue tracker, https://github.com/kjd/idna/issues
-Project-URL: Source, https://github.com/kjd/idna
-
-Internationalized Domain Names in Applications (IDNA)
-=====================================================
-
-Support for the Internationalized Domain Names in
-Applications (IDNA) protocol as specified in `RFC 5891
-<https://tools.ietf.org/html/rfc5891>`_. This is the latest version of
-the protocol and is sometimes referred to as “IDNA 2008”.
-
-This library also provides support for Unicode Technical
-Standard 46, `Unicode IDNA Compatibility Processing
-<https://unicode.org/reports/tr46/>`_.
-
-This acts as a suitable replacement for the “encodings.idna”
-module that comes with the Python standard library, but which
-only supports the older superseded IDNA specification (`RFC 3490
-<https://tools.ietf.org/html/rfc3490>`_).
-
-Basic functions are simply executed:
-
-.. code-block:: pycon
-
- >>> import idna
- >>> idna.encode('ドメイン.テスト')
- b'xn--eckwd4c7c.xn--zckzah'
- >>> print(idna.decode('xn--eckwd4c7c.xn--zckzah'))
- ドメイン.テスト
-
-
-Installation
-------------
-
-This package is available for installation from PyPI:
-
-.. code-block:: bash
-
- $ python3 -m pip install idna
-
-
-Usage
------
-
-For typical usage, the ``encode`` and ``decode`` functions will take a
-domain name argument and perform a conversion to A-labels or U-labels
-respectively.
-
-.. code-block:: pycon
-
- >>> import idna
- >>> idna.encode('ドメイン.テスト')
- b'xn--eckwd4c7c.xn--zckzah'
- >>> print(idna.decode('xn--eckwd4c7c.xn--zckzah'))
- ドメイン.テスト
-
-You may use the codec encoding and decoding methods using the
-``idna.codec`` module:
-
-.. code-block:: pycon
-
- >>> import idna.codec
- >>> print('домен.испытание'.encode('idna2008'))
- b'xn--d1acufc.xn--80akhbyknj4f'
- >>> print(b'xn--d1acufc.xn--80akhbyknj4f'.decode('idna2008'))
- домен.испытание
-
-Conversions can be applied at a per-label basis using the ``ulabel`` or
-``alabel`` functions if necessary:
-
-.. code-block:: pycon
-
- >>> idna.alabel('测试')
- b'xn--0zwm56d'
-
-Compatibility Mapping (UTS #46)
-+++++++++++++++++++++++++++++++
-
-As described in `RFC 5895 <https://tools.ietf.org/html/rfc5895>`_, the
-IDNA specification does not normalize input from different potential
-ways a user may input a domain name. This functionality, known as
-a “mapping”, is considered by the specification to be a local
-user-interface issue distinct from IDNA conversion functionality.
-
-This library provides one such mapping that was developed by the
-Unicode Consortium. Known as `Unicode IDNA Compatibility Processing
-<https://unicode.org/reports/tr46/>`_, it provides for both a regular
-mapping for typical applications, as well as a transitional mapping to
-help migrate from older IDNA 2003 applications.
-
-For example, “Königsgäßchen” is not a permissible label as *LATIN
-CAPITAL LETTER K* is not allowed (nor are capital letters in general).
-UTS 46 will convert this into lower case prior to applying the IDNA
-conversion.
-
-.. code-block:: pycon
-
- >>> import idna
- >>> idna.encode('Königsgäßchen')
- ...
- idna.core.InvalidCodepoint: Codepoint U+004B at position 1 of 'Königsgäßchen' not allowed
- >>> idna.encode('Königsgäßchen', uts46=True)
- b'xn--knigsgchen-b4a3dun'
- >>> print(idna.decode('xn--knigsgchen-b4a3dun'))
- königsgäßchen
-
-Transitional processing provides conversions to help transition from
-the older 2003 standard to the current standard. For example, in the
-original IDNA specification, the *LATIN SMALL LETTER SHARP S* (ß) was
-converted into two *LATIN SMALL LETTER S* (ss), whereas in the current
-IDNA specification this conversion is not performed.
-
-.. code-block:: pycon
-
- >>> idna.encode('Königsgäßchen', uts46=True, transitional=True)
- 'xn--knigsgsschen-lcb0w'
-
-Implementers should use transitional processing with caution, only in
-rare cases where conversion from legacy labels to current labels must be
-performed (i.e. IDNA implementations that pre-date 2008). For typical
-applications that just need to convert labels, transitional processing
-is unlikely to be beneficial and could produce unexpected incompatible
-results.
-
-``encodings.idna`` Compatibility
-++++++++++++++++++++++++++++++++
-
-Function calls from the Python built-in ``encodings.idna`` module are
-mapped to their IDNA 2008 equivalents using the ``idna.compat`` module.
-Simply substitute the ``import`` clause in your code to refer to the new
-module name.
-
-Exceptions
-----------
-
-All errors raised during the conversion following the specification
-should raise an exception derived from the ``idna.IDNAError`` base
-class.
-
-More specific exceptions that may be generated as ``idna.IDNABidiError``
-when the error reflects an illegal combination of left-to-right and
-right-to-left characters in a label; ``idna.InvalidCodepoint`` when
-a specific codepoint is an illegal character in an IDN label (i.e.
-INVALID); and ``idna.InvalidCodepointContext`` when the codepoint is
-illegal based on its positional context (i.e. it is CONTEXTO or CONTEXTJ
-but the contextual requirements are not satisfied.)
-
-Building and Diagnostics
-------------------------
-
-The IDNA and UTS 46 functionality relies upon pre-calculated lookup
-tables for performance. These tables are derived from computing against
-eligibility criteria in the respective standards. These tables are
-computed using the command-line script ``tools/idna-data``.
-
-This tool will fetch relevant codepoint data from the Unicode repository
-and perform the required calculations to identify eligibility. There are
-three main modes:
-
-* ``idna-data make-libdata``. Generates ``idnadata.py`` and
- ``uts46data.py``, the pre-calculated lookup tables used for IDNA and
- UTS 46 conversions. Implementers who wish to track this library against
- a different Unicode version may use this tool to manually generate a
- different version of the ``idnadata.py`` and ``uts46data.py`` files.
-
-* ``idna-data make-table``. Generate a table of the IDNA disposition
- (e.g. PVALID, CONTEXTJ, CONTEXTO) in the format found in Appendix
- B.1 of RFC 5892 and the pre-computed tables published by `IANA
- <https://www.iana.org/>`_.
-
-* ``idna-data U+0061``. Prints debugging output on the various
- properties associated with an individual Unicode codepoint (in this
- case, U+0061), that are used to assess the IDNA and UTS 46 status of a
- codepoint. This is helpful in debugging or analysis.
-
-The tool accepts a number of arguments, described using ``idna-data
--h``. Most notably, the ``--version`` argument allows the specification
-of the version of Unicode to be used in computing the table data. For
-example, ``idna-data --version 9.0.0 make-libdata`` will generate
-library data against Unicode 9.0.0.
-
-
-Additional Notes
-----------------
-
-* **Packages**. The latest tagged release version is published in the
- `Python Package Index <https://pypi.org/project/idna/>`_.
-
-* **Version support**. This library supports Python 3.5 and higher.
- As this library serves as a low-level toolkit for a variety of
- applications, many of which strive for broad compatibility with older
- Python versions, there is no rush to remove older interpreter support.
- Removing support for older versions should be well justified in that the
- maintenance burden has become too high.
-
-* **Python 2**. Python 2 is supported by version 2.x of this library.
- While active development of the version 2.x series has ended, notable
- issues being corrected may be backported to 2.x. Use "idna<3" in your
- requirements file if you need this library for a Python 2 application.
-
-* **Testing**. The library has a test suite based on each rule of the
- IDNA specification, as well as tests that are provided as part of the
- Unicode Technical Standard 46, `Unicode IDNA Compatibility Processing
- <https://unicode.org/reports/tr46/>`_.
-
-* **Emoji**. It is an occasional request to support emoji domains in
- this library. Encoding of symbols like emoji is expressly prohibited by
- the technical standard IDNA 2008 and emoji domains are broadly phased
- out across the domain industry due to associated security risks. For
- now, applications that need to support these non-compliant labels
- may wish to consider trying the encode/decode operation in this library
- first, and then falling back to using `encodings.idna`. See `the Github
- project <https://github.com/kjd/idna/issues/18>`_ for more discussion.
-