numpy.lib.NumpyVersion()

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.

Examples

>>> from numpy.lib import NumpyVersion
>>> if NumpyVersion(np.__version__) < '1.7.0'):
...     print('skip')
skip

>>> NumpyVersion('1.7')  # raises ValueError, add ".0"