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���h� � @ s$ d Z ddlZdgZG dd� d�ZdS )a Utility to compare (NumPy) version strings.
The NumpyVersion class allows properly comparing numpy version strings.
The LooseVersion and StrictVersion classes that distutils provides don't
work; they don't recognize anything like alpha/beta/rc/dev versions.
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dd� ZdS )r a 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"
Traceback (most recent call last):
...
ValueError: Not a valid numpy version string
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