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annotate env/lib/python3.7/site-packages/idna-2.9.dist-info/METADATA @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 Metadata-Version: 2.1
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2 Name: idna
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3 Version: 2.9
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4 Summary: Internationalized Domain Names in Applications (IDNA)
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5 Home-page: https://github.com/kjd/idna
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6 Author: Kim Davies
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7 Author-email: kim@cynosure.com.au
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8 License: BSD-like
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9 Platform: UNKNOWN
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10 Classifier: Development Status :: 5 - Production/Stable
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11 Classifier: Intended Audience :: Developers
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12 Classifier: Intended Audience :: System Administrators
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13 Classifier: License :: OSI Approved :: BSD License
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14 Classifier: Operating System :: OS Independent
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15 Classifier: Programming Language :: Python
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16 Classifier: Programming Language :: Python :: 2
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17 Classifier: Programming Language :: Python :: 2.7
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18 Classifier: Programming Language :: Python :: 3
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19 Classifier: Programming Language :: Python :: 3.4
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20 Classifier: Programming Language :: Python :: 3.5
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21 Classifier: Programming Language :: Python :: 3.6
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22 Classifier: Programming Language :: Python :: 3.7
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23 Classifier: Programming Language :: Python :: 3.8
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24 Classifier: Programming Language :: Python :: Implementation :: CPython
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25 Classifier: Programming Language :: Python :: Implementation :: PyPy
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26 Classifier: Topic :: Internet :: Name Service (DNS)
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27 Classifier: Topic :: Software Development :: Libraries :: Python Modules
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28 Classifier: Topic :: Utilities
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29 Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
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30
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31 Internationalized Domain Names in Applications (IDNA)
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32 =====================================================
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33
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34 Support for the Internationalised Domain Names in Applications
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35 (IDNA) protocol as specified in `RFC 5891 <http://tools.ietf.org/html/rfc5891>`_.
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36 This is the latest version of the protocol and is sometimes referred to as
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37 “IDNA 2008”.
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38
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39 This library also provides support for Unicode Technical Standard 46,
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40 `Unicode IDNA Compatibility Processing <http://unicode.org/reports/tr46/>`_.
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41
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42 This acts as a suitable replacement for the “encodings.idna” module that
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43 comes with the Python standard library, but only supports the
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44 old, deprecated IDNA specification (`RFC 3490 <http://tools.ietf.org/html/rfc3490>`_).
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45
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46 Basic functions are simply executed:
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47
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48 .. code-block:: pycon
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49
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50 # Python 3
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51 >>> import idna
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52 >>> idna.encode('ドメイン.テスト')
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53 b'xn--eckwd4c7c.xn--zckzah'
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54 >>> print(idna.decode('xn--eckwd4c7c.xn--zckzah'))
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55 ドメイン.テスト
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56
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57 # Python 2
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58 >>> import idna
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59 >>> idna.encode(u'ドメイン.テスト')
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60 'xn--eckwd4c7c.xn--zckzah'
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61 >>> print idna.decode('xn--eckwd4c7c.xn--zckzah')
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62 ドメイン.テスト
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63
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64 Packages
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65 --------
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66
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67 The latest tagged release version is published in the PyPI repository:
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68
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69 .. image:: https://badge.fury.io/py/idna.svg
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70 :target: http://badge.fury.io/py/idna
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71
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72
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73 Installation
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74 ------------
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75
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76 To install this library, you can use pip:
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77
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78 .. code-block:: bash
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79
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80 $ pip install idna
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81
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82 Alternatively, you can install the package using the bundled setup script:
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83
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84 .. code-block:: bash
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85
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86 $ python setup.py install
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87
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88 This library works with Python 2.7 and Python 3.4 or later.
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89
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90
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91 Usage
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92 -----
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93
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94 For typical usage, the ``encode`` and ``decode`` functions will take a domain
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95 name argument and perform a conversion to A-labels or U-labels respectively.
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96
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97 .. code-block:: pycon
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98
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99 # Python 3
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100 >>> import idna
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101 >>> idna.encode('ドメイン.テスト')
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102 b'xn--eckwd4c7c.xn--zckzah'
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103 >>> print(idna.decode('xn--eckwd4c7c.xn--zckzah'))
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104 ドメイン.テスト
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105
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106 You may use the codec encoding and decoding methods using the
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107 ``idna.codec`` module:
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108
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109 .. code-block:: pycon
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110
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111 # Python 2
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112 >>> import idna.codec
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113 >>> print u'домена.испытание'.encode('idna')
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114 xn--80ahd1agd.xn--80akhbyknj4f
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115 >>> print 'xn--80ahd1agd.xn--80akhbyknj4f'.decode('idna')
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116 домена.испытание
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117
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118 Conversions can be applied at a per-label basis using the ``ulabel`` or ``alabel``
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119 functions if necessary:
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120
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121 .. code-block:: pycon
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122
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123 # Python 2
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124 >>> idna.alabel(u'测试')
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125 'xn--0zwm56d'
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126
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127 Compatibility Mapping (UTS #46)
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128 +++++++++++++++++++++++++++++++
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129
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130 As described in `RFC 5895 <http://tools.ietf.org/html/rfc5895>`_, the IDNA
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131 specification no longer normalizes input from different potential ways a user
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132 may input a domain name. This functionality, known as a “mapping”, is now
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133 considered by the specification to be a local user-interface issue distinct
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134 from IDNA conversion functionality.
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135
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136 This library provides one such mapping, that was developed by the Unicode
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137 Consortium. Known as `Unicode IDNA Compatibility Processing <http://unicode.org/reports/tr46/>`_,
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138 it provides for both a regular mapping for typical applications, as well as
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139 a transitional mapping to help migrate from older IDNA 2003 applications.
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140
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141 For example, “Königsgäßchen” is not a permissible label as *LATIN CAPITAL
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142 LETTER K* is not allowed (nor are capital letters in general). UTS 46 will
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143 convert this into lower case prior to applying the IDNA conversion.
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144
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145 .. code-block:: pycon
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146
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147 # Python 3
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148 >>> import idna
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149 >>> idna.encode(u'Königsgäßchen')
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150 ...
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151 idna.core.InvalidCodepoint: Codepoint U+004B at position 1 of 'Königsgäßchen' not allowed
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152 >>> idna.encode('Königsgäßchen', uts46=True)
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153 b'xn--knigsgchen-b4a3dun'
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154 >>> print(idna.decode('xn--knigsgchen-b4a3dun'))
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155 königsgäßchen
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156
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157 Transitional processing provides conversions to help transition from the older
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158 2003 standard to the current standard. For example, in the original IDNA
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159 specification, the *LATIN SMALL LETTER SHARP S* (ß) was converted into two
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160 *LATIN SMALL LETTER S* (ss), whereas in the current IDNA specification this
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161 conversion is not performed.
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162
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163 .. code-block:: pycon
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164
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165 # Python 2
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166 >>> idna.encode(u'Königsgäßchen', uts46=True, transitional=True)
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167 'xn--knigsgsschen-lcb0w'
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168
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169 Implementors should use transitional processing with caution, only in rare
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170 cases where conversion from legacy labels to current labels must be performed
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171 (i.e. IDNA implementations that pre-date 2008). For typical applications
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172 that just need to convert labels, transitional processing is unlikely to be
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173 beneficial and could produce unexpected incompatible results.
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174
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175 ``encodings.idna`` Compatibility
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176 ++++++++++++++++++++++++++++++++
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177
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178 Function calls from the Python built-in ``encodings.idna`` module are
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179 mapped to their IDNA 2008 equivalents using the ``idna.compat`` module.
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180 Simply substitute the ``import`` clause in your code to refer to the
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181 new module name.
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182
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183 Exceptions
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184 ----------
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185
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186 All errors raised during the conversion following the specification should
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187 raise an exception derived from the ``idna.IDNAError`` base class.
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188
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189 More specific exceptions that may be generated as ``idna.IDNABidiError``
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190 when the error reflects an illegal combination of left-to-right and right-to-left
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191 characters in a label; ``idna.InvalidCodepoint`` when a specific codepoint is
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192 an illegal character in an IDN label (i.e. INVALID); and ``idna.InvalidCodepointContext``
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193 when the codepoint is illegal based on its positional context (i.e. it is CONTEXTO
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194 or CONTEXTJ but the contextual requirements are not satisfied.)
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195
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196 Building and Diagnostics
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197 ------------------------
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198
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199 The IDNA and UTS 46 functionality relies upon pre-calculated lookup tables for
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200 performance. These tables are derived from computing against eligibility criteria
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201 in the respective standards. These tables are computed using the command-line
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202 script ``tools/idna-data``.
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203
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204 This tool will fetch relevant tables from the Unicode Consortium and perform the
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205 required calculations to identify eligibility. It has three main modes:
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206
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207 * ``idna-data make-libdata``. Generates ``idnadata.py`` and ``uts46data.py``,
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208 the pre-calculated lookup tables using for IDNA and UTS 46 conversions. Implementors
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209 who wish to track this library against a different Unicode version may use this tool
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210 to manually generate a different version of the ``idnadata.py`` and ``uts46data.py``
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211 files.
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212
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213 * ``idna-data make-table``. Generate a table of the IDNA disposition
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214 (e.g. PVALID, CONTEXTJ, CONTEXTO) in the format found in Appendix B.1 of RFC
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215 5892 and the pre-computed tables published by `IANA <http://iana.org/>`_.
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216
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217 * ``idna-data U+0061``. Prints debugging output on the various properties
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218 associated with an individual Unicode codepoint (in this case, U+0061), that are
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219 used to assess the IDNA and UTS 46 status of a codepoint. This is helpful in debugging
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220 or analysis.
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221
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222 The tool accepts a number of arguments, described using ``idna-data -h``. Most notably,
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223 the ``--version`` argument allows the specification of the version of Unicode to use
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224 in computing the table data. For example, ``idna-data --version 9.0.0 make-libdata``
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225 will generate library data against Unicode 9.0.0.
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226
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227 Note that this script requires Python 3, but all generated library data will work
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228 in Python 2.7.
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229
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230
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231 Testing
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232 -------
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233
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234 The library has a test suite based on each rule of the IDNA specification, as
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235 well as tests that are provided as part of the Unicode Technical Standard 46,
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236 `Unicode IDNA Compatibility Processing <http://unicode.org/reports/tr46/>`_.
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237
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238 The tests are run automatically on each commit at Travis CI:
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239
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240 .. image:: https://travis-ci.org/kjd/idna.svg?branch=master
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241 :target: https://travis-ci.org/kjd/idna
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242
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243