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+"""
+Python Markdown
+
+A Python implementation of John Gruber's Markdown.
+
+Documentation: https://python-markdown.github.io/
+GitHub: https://github.com/Python-Markdown/markdown/
+PyPI: https://pypi.org/project/Markdown/
+
+Started by Manfred Stienstra (http://www.dwerg.net/).
+Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
+Currently maintained by Waylan Limberg (https://github.com/waylan),
+Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
+
+Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
+Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
+Copyright 2004 Manfred Stienstra (the original version)
+
+License: BSD (see LICENSE.md for details).
+"""
+
+# __version_info__ format:
+# (major, minor, patch, dev/alpha/beta/rc/final, #)
+# (1, 1, 2, 'dev', 0) => "1.1.2.dev0"
+# (1, 1, 2, 'alpha', 1) => "1.1.2a1"
+# (1, 2, 0, 'beta', 2) => "1.2b2"
+# (1, 2, 0, 'rc', 4) => "1.2rc4"
+# (1, 2, 0, 'final', 0) => "1.2"
+__version_info__ = (3, 4, 1, 'final', 0)
+
+
+def _get_version(version_info):
+    " Returns a PEP 440-compliant version number from version_info. "
+    assert len(version_info) == 5
+    assert version_info[3] in ('dev', 'alpha', 'beta', 'rc', 'final')
+
+    parts = 2 if version_info[2] == 0 else 3
+    v = '.'.join(map(str, version_info[:parts]))
+
+    if version_info[3] == 'dev':
+        v += '.dev' + str(version_info[4])
+    elif version_info[3] != 'final':
+        mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'}
+        v += mapping[version_info[3]] + str(version_info[4])
+
+    return v
+
+
+__version__ = _get_version(__version_info__)