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53 | <H1><A NAME="SECTION009100000000000000000"> | |
54 | B.1 History of the software</A> | |
55 | </H1> | |
56 | ||
57 | <P> | |
58 | Python was created in the early 1990s by Guido van Rossum at Stichting | |
59 | Mathematisch Centrum (CWI, see <a class="url" href="http://www.cwi.nl/">http://www.cwi.nl/</a>) in the Netherlands | |
60 | as a successor of a language called ABC. Guido remains Python's | |
61 | principal author, although it includes many contributions from others. | |
62 | ||
63 | <P> | |
64 | In 1995, Guido continued his work on Python at the Corporation for | |
65 | National Research Initiatives (CNRI, see <a class="url" href="http://www.cnri.reston.va.us/">http://www.cnri.reston.va.us/</a>) | |
66 | in Reston, Virginia where he released several versions of the | |
67 | software. | |
68 | ||
69 | <P> | |
70 | In May 2000, Guido and the Python core development team moved to | |
71 | BeOpen.com to form the BeOpen PythonLabs team. In October of the same | |
72 | year, the PythonLabs team moved to Digital Creations (now Zope | |
73 | Corporation; see <a class="url" href="http://www.zope.com/">http://www.zope.com/</a>). In 2001, the Python | |
74 | Software Foundation (PSF, see <a class="url" href="http://www.python.org/psf/">http://www.python.org/psf/</a>) was | |
75 | formed, a non-profit organization created specifically to own | |
76 | Python-related Intellectual Property. Zope Corporation is a | |
77 | sponsoring member of the PSF. | |
78 | ||
79 | <P> | |
80 | All Python releases are Open Source (see | |
81 | <a class="url" href="http://www.opensource.org/">http://www.opensource.org/</a> for the Open Source Definition). | |
82 | Historically, most, but not all, Python releases have also been | |
83 | GPL-compatible; the table below summarizes the various releases. | |
84 | ||
85 | <P> | |
86 | <div class="center"><table class="realtable"> | |
87 | <thead> | |
88 | <tr> | |
89 | <th class="center">Release</th> | |
90 | <th class="center">Derived from</th> | |
91 | <th class="center">Year</th> | |
92 | <th class="center">Owner</th> | |
93 | <th class="center">GPL compatible?</th> | |
94 | </tr> | |
95 | </thead> | |
96 | <tbody> | |
97 | <tr><td class="center" valign="baseline">0.9.0 thru 1.2</td> | |
98 | <td class="center">n/a</td> | |
99 | <td class="center">1991-1995</td> | |
100 | <td class="center">CWI</td> | |
101 | <td class="center">yes</td></tr> | |
102 | <tr><td class="center" valign="baseline">1.3 thru 1.5.2</td> | |
103 | <td class="center">1.2</td> | |
104 | <td class="center">1995-1999</td> | |
105 | <td class="center">CNRI</td> | |
106 | <td class="center">yes</td></tr> | |
107 | <tr><td class="center" valign="baseline">1.6</td> | |
108 | <td class="center">1.5.2</td> | |
109 | <td class="center">2000</td> | |
110 | <td class="center">CNRI</td> | |
111 | <td class="center">no</td></tr> | |
112 | <tr><td class="center" valign="baseline">2.0</td> | |
113 | <td class="center">1.6</td> | |
114 | <td class="center">2000</td> | |
115 | <td class="center">BeOpen.com</td> | |
116 | <td class="center">no</td></tr> | |
117 | <tr><td class="center" valign="baseline">1.6.1</td> | |
118 | <td class="center">1.6</td> | |
119 | <td class="center">2001</td> | |
120 | <td class="center">CNRI</td> | |
121 | <td class="center">no</td></tr> | |
122 | <tr><td class="center" valign="baseline">2.1</td> | |
123 | <td class="center">2.0+1.6.1</td> | |
124 | <td class="center">2001</td> | |
125 | <td class="center">PSF</td> | |
126 | <td class="center">no</td></tr> | |
127 | <tr><td class="center" valign="baseline">2.0.1</td> | |
128 | <td class="center">2.0+1.6.1</td> | |
129 | <td class="center">2001</td> | |
130 | <td class="center">PSF</td> | |
131 | <td class="center">yes</td></tr> | |
132 | <tr><td class="center" valign="baseline">2.1.1</td> | |
133 | <td class="center">2.1+2.0.1</td> | |
134 | <td class="center">2001</td> | |
135 | <td class="center">PSF</td> | |
136 | <td class="center">yes</td></tr> | |
137 | <tr><td class="center" valign="baseline">2.2</td> | |
138 | <td class="center">2.1.1</td> | |
139 | <td class="center">2001</td> | |
140 | <td class="center">PSF</td> | |
141 | <td class="center">yes</td></tr> | |
142 | <tr><td class="center" valign="baseline">2.1.2</td> | |
143 | <td class="center">2.1.1</td> | |
144 | <td class="center">2002</td> | |
145 | <td class="center">PSF</td> | |
146 | <td class="center">yes</td></tr> | |
147 | <tr><td class="center" valign="baseline">2.1.3</td> | |
148 | <td class="center">2.1.2</td> | |
149 | <td class="center">2002</td> | |
150 | <td class="center">PSF</td> | |
151 | <td class="center">yes</td></tr> | |
152 | <tr><td class="center" valign="baseline">2.2.1</td> | |
153 | <td class="center">2.2</td> | |
154 | <td class="center">2002</td> | |
155 | <td class="center">PSF</td> | |
156 | <td class="center">yes</td></tr> | |
157 | <tr><td class="center" valign="baseline">2.2.2</td> | |
158 | <td class="center">2.2.1</td> | |
159 | <td class="center">2002</td> | |
160 | <td class="center">PSF</td> | |
161 | <td class="center">yes</td></tr> | |
162 | <tr><td class="center" valign="baseline">2.2.3</td> | |
163 | <td class="center">2.2.2</td> | |
164 | <td class="center">2002-2003</td> | |
165 | <td class="center">PSF</td> | |
166 | <td class="center">yes</td></tr> | |
167 | <tr><td class="center" valign="baseline">2.3</td> | |
168 | <td class="center">2.2.2</td> | |
169 | <td class="center">2002-2003</td> | |
170 | <td class="center">PSF</td> | |
171 | <td class="center">yes</td></tr> | |
172 | <tr><td class="center" valign="baseline">2.3.1</td> | |
173 | <td class="center">2.3</td> | |
174 | <td class="center">2002-2003</td> | |
175 | <td class="center">PSF</td> | |
176 | <td class="center">yes</td></tr> | |
177 | <tr><td class="center" valign="baseline">2.3.2</td> | |
178 | <td class="center">2.3.1</td> | |
179 | <td class="center">2003</td> | |
180 | <td class="center">PSF</td> | |
181 | <td class="center">yes</td></tr> | |
182 | <tr><td class="center" valign="baseline">2.3.3</td> | |
183 | <td class="center">2.3.2</td> | |
184 | <td class="center">2003</td> | |
185 | <td class="center">PSF</td> | |
186 | <td class="center">yes</td></tr> | |
187 | <tr><td class="center" valign="baseline">2.3.4</td> | |
188 | <td class="center">2.3.3</td> | |
189 | <td class="center">2004</td> | |
190 | <td class="center">PSF</td> | |
191 | <td class="center">yes</td></tr> | |
192 | <tr><td class="center" valign="baseline">2.3.5</td> | |
193 | <td class="center">2.3.4</td> | |
194 | <td class="center">2005</td> | |
195 | <td class="center">PSF</td> | |
196 | <td class="center">yes</td></tr> | |
197 | <tr><td class="center" valign="baseline">2.4</td> | |
198 | <td class="center">2.3</td> | |
199 | <td class="center">2004</td> | |
200 | <td class="center">PSF</td> | |
201 | <td class="center">yes</td></tr> | |
202 | <tr><td class="center" valign="baseline">2.4.1</td> | |
203 | <td class="center">2.4</td> | |
204 | <td class="center">2005</td> | |
205 | <td class="center">PSF</td> | |
206 | <td class="center">yes</td></tr> | |
207 | <tr><td class="center" valign="baseline">2.4.2</td> | |
208 | <td class="center">2.4.1</td> | |
209 | <td class="center">2005</td> | |
210 | <td class="center">PSF</td> | |
211 | <td class="center">yes</td></tr></tbody> | |
212 | </table></div> | |
213 | ||
214 | <P> | |
215 | <span class="note"><b class="label">Note:</b> | |
216 | GPL-compatible doesn't mean that we're distributing | |
217 | Python under the GPL. All Python licenses, unlike the GPL, let you | |
218 | distribute a modified version without making your changes open source. | |
219 | The GPL-compatible licenses make it possible to combine Python with | |
220 | other software that is released under the GPL; the others don't.</span> | |
221 | ||
222 | <P> | |
223 | Thanks to the many outside volunteers who have worked under Guido's | |
224 | direction to make these releases possible. | |
225 | ||
226 | <P> | |
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261 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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