text: #!/usr/bin/env python
  # coding: utf-8
  # /*##########################################################################
  #
  # Copyright (c) 2015-2016 European Synchrotron Radiation Facility
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  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
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  # all copies or substantial portions of the Software.
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  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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  """Unique place where the version number is defined.
  
  provides:
  * version = '1.2.3' or '1.2.3-beta4'
  * version_info = named tuple (1,2,3,'beta',4)
  * hexversion: 0x010203B4
  * strictversion = '1.2.3b4
  * debianversion = '1.2.3~beta4'
  * calc_hexversion: the function to transform a version_tuple into an integer
  
  This is called hexversion since it only really looks meaningful when viewed as the
  result of passing it to the built-in hex() function.
  The version_info value may be used for a more human-friendly encoding of the same information.
  
  The hexversion is a 32-bit number with the following layout:
  Bits (big endian order)     Meaning
  1-8     PY_MAJOR_VERSION (the 2 in 2.1.0a3)
  9-16     PY_MINOR_VERSION (the 1 in 2.1.0a3)
  17-24     PY_MICRO_VERSION (the 0 in 2.1.0a3)
  25-28     PY_RELEASE_LEVEL (0xA for alpha, 0xB for beta, 0xC for release candidate and 0xF for final)
  29-32     PY_RELEASE_SERIAL (the 3 in 2.1.0a3, zero for final releases)
  
  Thus 2.1.0a3 is hexversion 0x020100a3.
  
  """
  
  from __future__ import absolute_import, print_function, division
  __authors__ = ['Jérôme Kieffer']
  __license__ = 'MIT'
  __date__ = '08/08/2016'
  __all__ = ['date', 'version_info', 'strictversion', 'hexversion', 'debianversion', 'calc_hexversion']
  
  
  RELEASE_LEVEL_VALUE = {'dev': 0,
                         'alpha': 10,
                         'beta': 11,
                         'gamma': 11,
                         'rc': 12,
                         'final': 15}
  
  MAJOR = 0
  MINOR = 7
  MICRO = 3
  RELEV = 'dev'  # <16
  SERIAL = 0  # <16
  
  date = __date__
  
  from collections import namedtuple
  _version_info = namedtuple('version_info', ['major', 'minor', 'micro', 'releaselevel', 'serial'])
  
  version_info = _version_info(MAJOR, MINOR, MICRO, RELEV, SERIAL)
  
  strictversion = version = debianversion = '%d.%d.%d' % version_info[:3]
  if version_info.releaselevel != 'final':
      version += '-%s%s' % version_info[-2:]
      debianversion += '~adev%i' % version_info[-1] if RELEV == 'dev' else '~%s%i' % version_info[-2:]
      prerel = 'a' if RELEASE_LEVEL_VALUE.get(version_info[3], 0) < 10 else 'b'
      if prerel not in 'ab':
          prerel = 'a'
      strictversion += prerel + str(version_info[-1])
  
  
  def calc_hexversion(major=0, minor=0, micro=0, releaselevel='dev', serial=0):
      """Calculate the hexadecimal version number from the tuple version_info:
  
      :param major: integer
      :param minor: integer
      :param micro: integer
      :param relev: integer or string
      :param serial: integer
      :return: integerm always increasing with revision numbers
      """
      try:
          releaselevel = int(releaselevel)
      except ValueError:
          releaselevel = RELEASE_LEVEL_VALUE.get(releaselevel, 0)
  
      hex_version = int(serial)
      hex_version |= releaselevel * 1 << 4
      hex_version |= int(micro) * 1 << 8
      hex_version |= int(minor) * 1 << 16
      hex_version |= int(major) * 1 << 24
      return hex_version
  
  
  hexversion = calc_hexversion(*version_info)
  
  if __name__ == '__main__':
      print(version)
  