class_docstr: Parse and compare numpy version strings.
  
  NumPy has the following versioning scheme (numbers given are examples; they
  can be > 9) in principle):
  
  - Released version: '1.8.0', '1.8.1', etc.
  - Alpha: '1.8.0a1', '1.8.0a2', etc.
  - Beta: '1.8.0b1', '1.8.0b2', etc.
  - Release candidates: '1.8.0rc1', '1.8.0rc2', etc.
  - Development versions: '1.8.0.dev-f1234afa' (git commit hash appended)
  - Development versions after a1: '1.8.0a1.dev-f1234afa',
                                   '1.8.0b2.dev-f1234afa',
                                   '1.8.1rc1.dev-f1234afa', etc.
  - Development versions (no git hash available): '1.8.0.dev-Unknown'
  
  Comparing needs to be done against a valid version string or other
  `NumpyVersion` instance. Note that all development versions of the same
  (pre-)release compare equal.
  
  .. versionadded:: 1.9.0
  
  Parameters
  ----------
  vstring : str
      NumPy version string (``np.__version__``).
  
  Examples
  --------
  >>> from numpy.lib import NumpyVersion
  >>> if NumpyVersion(np.__version__) < '1.7.0':
  ...     print('skip')
  skip
  
  >>> NumpyVersion('1.7')  # raises ValueError, add ".0"
code: def __gt__(self, other):
      return self._compare(other) > 0
  
file_path: catboost/contrib/python/numpy/py2/numpy/lib/_version.py
imports: from __future__ import division, absolute_import, print_function
  import re
  from numpy.compat import basestring
label_desc: Use image node_id 9 for calling the NumpyVersion obj's underlying member method code with example usage: obj.__gt__(other) and returns: unknown