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annotate planemo/lib/python3.7/site-packages/isodate-0.6.0.dist-info/DESCRIPTION.rst @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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2 ISO 8601 date/time parser
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3 =========================
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4
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5 .. image:: https://travis-ci.org/gweis/isodate.svg?branch=master
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6 :target: https://travis-ci.org/gweis/isodate
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7 :alt: Travis-CI
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8 .. image:: https://coveralls.io/repos/gweis/isodate/badge.svg?branch=master
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9 :target: https://coveralls.io/r/gweis/isodate?branch=master
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10 :alt: Coveralls
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11 .. image:: https://img.shields.io/pypi/v/isodate.svg
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12 :target: https://pypi.python.org/pypi/isodate/
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13 :alt: Latest Version
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14 .. image:: https://img.shields.io/pypi/l/isodate.svg
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15 :target: https://pypi.python.org/pypi/isodate/
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16 :alt: License
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17
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18
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19 This module implements ISO 8601 date, time and duration parsing.
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20 The implementation follows ISO8601:2004 standard, and implements only
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21 date/time representations mentioned in the standard. If something is not
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22 mentioned there, then it is treated as non existent, and not as an allowed
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23 option.
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24
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25 For instance, ISO8601:2004 never mentions 2 digit years. So, it is not
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26 intended by this module to support 2 digit years. (while it may still
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27 be valid as ISO date, because it is not explicitly forbidden.)
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28 Another example is, when no time zone information is given for a time,
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29 then it should be interpreted as local time, and not UTC.
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30
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31 As this module maps ISO 8601 dates/times to standard Python data types, like
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32 *date*, *time*, *datetime* and *timedelta*, it is not possible to convert
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33 all possible ISO 8601 dates/times. For instance, dates before 0001-01-01 are
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34 not allowed by the Python *date* and *datetime* classes. Additionally
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35 fractional seconds are limited to microseconds. That means if the parser finds
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36 for instance nanoseconds it will round it to microseconds.
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37
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38 Documentation
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39 -------------
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40
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41 Currently there are four parsing methods available.
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42 * parse_time:
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43 parses an ISO 8601 time string into a *time* object
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44 * parse_date:
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45 parses an ISO 8601 date string into a *date* object
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46 * parse_datetime:
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47 parses an ISO 8601 date-time string into a *datetime* object
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48 * parse_duration:
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49 parses an ISO 8601 duration string into a *timedelta* or *Duration*
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50 object.
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51 * parse_tzinfo:
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52 parses the time zone info part of an ISO 8601 string into a
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53 *tzinfo* object.
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54
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55 As ISO 8601 allows to define durations in years and months, and *timedelta*
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56 does not handle years and months, this module provides a *Duration* class,
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57 which can be used almost like a *timedelta* object (with some limitations).
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58 However, a *Duration* object can be converted into a *timedelta* object.
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59
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60 There are also ISO formatting methods for all supported data types. Each
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61 *xxx_isoformat* method accepts a format parameter. The default format is
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62 always the ISO 8601 expanded format. This is the same format used by
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63 *datetime.isoformat*:
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64
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65 * time_isoformat:
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66 Intended to create ISO time strings with default format
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67 *hh:mm:ssZ*.
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68 * date_isoformat:
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69 Intended to create ISO date strings with default format
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70 *yyyy-mm-dd*.
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71 * datetime_isoformat:
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72 Intended to create ISO date-time strings with default format
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73 *yyyy-mm-ddThh:mm:ssZ*.
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74 * duration_isoformat:
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75 Intended to create ISO duration strings with default format
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76 *PnnYnnMnnDTnnHnnMnnS*.
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77 * tz_isoformat:
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78 Intended to create ISO time zone strings with default format
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79 *hh:mm*.
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80 * strftime:
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81 A re-implementation mostly compatible with Python's *strftime*, but
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82 supports only those format strings, which can also be used for dates
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83 prior 1900. This method also understands how to format *datetime* and
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84 *Duration* instances.
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85
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86 Installation:
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87 -------------
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88
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89 This module can easily be installed with Python standard installation methods.
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90
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91 Either use *python setup.py install* or in case you have *setuptools* or
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92 *distribute* available, you can also use *easy_install*.
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93
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94 Limitations:
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95 ------------
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96
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97 * The parser accepts several date/time representation which should be invalid
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98 according to ISO 8601 standard.
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99
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100 1. for date and time together, this parser accepts a mixture of basic and extended format.
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101 e.g. the date could be in basic format, while the time is accepted in extended format.
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102 It also allows short dates and times in date-time strings.
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103 2. For incomplete dates, the first day is chosen. e.g. 19th century results in a date of
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104 1901-01-01.
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105 3. negative *Duration* and *timedelta* value are not fully supported yet.
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106
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107 Further information:
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108 --------------------
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109
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110 The doc strings and unit tests should provide rather detailed information about
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111 the methods and their limitations.
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112
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113 The source release provides a *setup.py* script,
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114 which can be used to run the unit tests included.
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115
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116 Source code is available at `<http://github.com/gweis/isodate>`_.
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117
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118 CHANGES
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119 =======
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120
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121 0.6.0 (2017-10-13)
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122 ------------------
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123
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124 - support incomplete month date (Fabien Loffredo)
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125 - rely on duck typing when doing duration maths
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126 - support ':' as separator in fractional time zones (usrenmae)
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127
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128
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129 0.5.4 (2015-08-06)
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130 ------------------
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131
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132 - Fix parsing of Periods (Fabien Bochu)
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133 - Make Duration objects hashable (Geoffrey Fairchild)
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134 - Add multiplication to duration (Reinoud Elhorst)
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135
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136
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137 0.5.1 (2014-11-07)
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138 ------------------
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139
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140 - fixed pickling of Duration objects
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141 - raise ISO8601Error when there is no 'T' separator in datetime strings (Adrian Coveney)
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142
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143
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144 0.5.0 (2014-02-23)
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145 ------------------
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146
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147 - ISO8601Error are subclasses of ValueError now (Michael Hrivnak)
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148 - improve compatibility across various python variants and versions
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149 - raise exceptions when using fractional years and months in date
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150 maths with durations
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151 - renamed method todatetime on Duraction objects to totimedelta
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152
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153
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154 0.4.9 (2012-10-30)
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155 ------------------
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156
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157 - support pickling FixedOffset instances
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158 - make sure parsed fractional seconds are in microseconds
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159 - add leading zeros when formattig microseconds (Jarom Loveridge)
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160
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161
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162 0.4.8 (2012-05-04)
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163 ------------------
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164
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165 - fixed incompatibility of unittests with python 2.5 and 2.6 (runs fine on 2.7
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166 and 3.2)
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167
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168
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169 0.4.7 (2012-01-26)
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170 ------------------
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171
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172 - fixed tzinfo formatting (never pass None into tzinfo.utcoffset())
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173
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174
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175 0.4.6 (2012-01-06)
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176 ------------------
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177
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178 - added Python 3 compatibility via 2to3
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179
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180 0.4.5 (2012-01-06)
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181 ------------------
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182
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183 - made setuptools dependency optional
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184
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185 0.4.4 (2011-04-16)
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186 ------------------
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187
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188 - Fixed formatting of microseconds for datetime objects
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189
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190 0.4.3 (2010-10-29)
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191 ------------------
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192
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193 - Fixed problem with %P formating and fractions (supplied by David Brooks)
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194
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195 0.4.2 (2010-10-28)
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196 ------------------
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197
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198 - Implemented unary - for Duration (supplied by David Brooks)
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199 - Output fractional seconds with '%P' format. (partly supplied by David Brooks)
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200
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201 0.4.1 (2010-10-13)
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202 ------------------
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203
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204 - fixed bug in comparison between timedelta and Duration.
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205 - fixed precision problem with microseconds (reported by Tommi Virtanen)
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206
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207 0.4.0 (2009-02-09)
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208 ------------------
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209
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210 - added method to parse ISO 8601 time zone strings
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211 - added methods to create ISO 8601 conforming strings
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212
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213 0.3.0 (2009-1-05)
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214 ------------------
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215
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216 - Initial release
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217
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218 TODOs
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219 =====
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220
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221 This to do list contains some thoughts and ideas about missing features, and
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222 parts to think about, whether to implement them or not. This list is probably
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223 not complete.
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224
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225 Missing features:
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226 -----------------
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227
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228 * time formating does not allow to create fractional representations.
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229 * parser for ISO intervals.
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230 * currently microseconds are always padded to a length of 6 characters.
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231 trailing 0s should be optional
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232
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233 Documentation:
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234 --------------
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235
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236 * parse_datetime:
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237 - complete documentation to show what this function allows, but ISO forbids.
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238 and vice verse.
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239 - support other separators between date and time than 'T'
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240
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241 * parse_date:
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242 - yeardigits should be always greater than 4
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243 - dates before 0001-01-01 are not supported
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244
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245 * parse_duration:
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246 - alternative formats are not fully supported due to parse_date restrictions
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247 - standard duration format is fully supported but not very restrictive.
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248
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249 * Duration:
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250 - support fractional years and month in calculations
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251 - implement w3c order relation? (`<http://www.w3.org/TR/xmlschema-2/#duration-order>`_)
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252 - refactor to have duration mathematics only at one place.
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253 - localize __str__ method (does timedelta do this?)
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254 - when is a Duration negative?
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255 - normalize Durations. months [00-12] and years ]-inf,+inf[
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256
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257