Python xarray 模块，__version__() 实例源码

def skip_if_no_ne(engine='numexpr'):
    import nose
    _USE_NUMEXPR = pd.computation.expressions._USE_NUMEXPR

    if engine == 'numexpr':
        try:
            import numexpr as ne
        except ImportError:
            raise nose.SkipTest("numexpr not installed")

        if not _USE_NUMEXPR:
            raise nose.SkipTest("numexpr disabled")

        if ne.__version__ < LooseVersion('2.0'):
            raise nose.SkipTest("numexpr version too low: "
                                "%s" % ne.__version__)

def resolve_name(self, modname, parents, path, base):
        if modname is None:
            if path:
                mod_cls = path.rstrip('.')
            else:
                mod_cls = None
                # if documenting a class-level object without path,
                # there must be a current class, either from a parent
                # auto directive ...
                mod_cls = self.env.temp_data.get('autodoc:class')
                # ... or from a class directive
                if mod_cls is None:
                    mod_cls = self.env.temp_data.get('py:class')
                # ... if still None, there's no way to know
                if mod_cls is None:
                    return None, []
            # HACK: this is added in comparison to ClassLevelDocumenter
            # mod_cls still exists of class.accessor, so an extra
            # rpartition is needed
            modname, accessor = rpartition(mod_cls, '.')
            modname, cls = rpartition(modname, '.')
            parents = [cls, accessor]
            # if the module name is still missing, get it like above
            if not modname:
                modname = self.env.temp_data.get('autodoc:module')
            if not modname:
                if sphinx.__version__ > '1.3':
                    modname = self.env.ref_context.get('py:module')
                else:
                    modname = self.env.temp_data.get('py:module')
            # ... else, it stays None, which means invalid
        return modname, parents + [base]

def test_idims(self):
        """Test the extraction of the slicers of the dimensions"""
        ds = psyd.open_dataset(bt.get_file('test-t2m-u-v.nc'))
        arr = ds.t2m[1:, 1]
        arr.psy.init_accessor(base=ds)
        dims = arr.psy.idims
        for dim in ['time', 'lev', 'lat', 'lon']:
            self.assertEqual(
                psyd.safe_list(ds[dim][dims[dim]]),
                psyd.safe_list(arr.coords[dim]),
                msg="Slice %s for dimension %s is wrong!" % (dims[dim], dim))
        # test with unknown dimensions
        if xr.__version__ >= '0.9':
            ds = ds.drop('time')
            arr = ds.t2m[1:, 1]
            arr.psy.init_accessor(base=ds)
            if not six.PY2:
                with self.assertWarnsRegex(UserWarning, 'time'):
                    dims = arr.psy.idims
            l = psyd.ArrayList.from_dataset(
                ds, name='t2m', time=slice(1, None), lev=85000., method='sel')
            arr = l[0]
            dims = arr.psy.idims
            for dim in ['time', 'lev', 'lat', 'lon']:
                if dim == 'time':
                    self.assertEqual(dims[dim], slice(1, 5, 1))
                else:
                    self.assertEqual(
                        psyd.safe_list(ds[dim][dims[dim]]),
                        psyd.safe_list(arr.coords[dim]),
                        msg="Slice %s for dimension %s is wrong!" % (dims[dim],
                                                                     dim))

def _skip_if_mpl_1_5():
    import matplotlib
    v = matplotlib.__version__
    if v > LooseVersion('1.4.3') or v[0] == '0':
        import nose
        raise nose.SkipTest("matplotlib 1.5")

def _skip_if_scipy_0_17():
    import scipy
    v = scipy.__version__
    if v >= LooseVersion("0.17.0"):
        import nose
        raise nose.SkipTest("scipy 0.17")

def _skip_if_no_xarray():
    try:
        import xarray
    except ImportError:
        import nose
        raise nose.SkipTest("xarray not installed")

    v = xarray.__version__
    if v < LooseVersion('0.7.0'):
        import nose
        raise nose.SkipTest("xarray not version is too low: {0}".format(v))

def _incompat_bottleneck_version(method):
    """ skip if we have bottleneck installed
    and its >= 1.0
    as we don't match the nansum/nanprod behavior for all-nan
    ops, see GH9422
    """
    if method not in ['sum','prod']:
        return False
    try:
        import bottleneck as bn
        return bn.__version__ >= LooseVersion('1.0')
    except ImportError:
        return False

def _get_versions(requirements=True):
    if requirements:
        import matplotlib as mpl
        import xarray as xr
        import pandas as pd
        import numpy as np
        return {'version': __version__,
                'requirements': {'matplotlib': mpl.__version__,
                                 'xarray': xr.__version__,
                                 'pandas': pd.__version__,
                                 'numpy': np.__version__,
                                 'python': ' '.join(sys.version.splitlines())}}
    else:
        return {'version': __version__}

def _attributes(event_path, number_events, alpha, betas, lambda_, cpu_time,
                wall_time, function, method=None, attrs=None):
    width = max([len(ss) for ss in (event_path,
                                    str(number_events),
                                    str(alpha),
                                    str(betas),
                                    str(lambda_),
                                    function,
                                    str(method),
                                    socket.gethostname(),
                                    getpass.getuser())])
    width = max(19, width)

    def _format(value):
        return '{0: <{width}}'.format(value, width=width)

    if not type(alpha) in (float, int):
        alpha = 'varying'

    new_attrs = {'date': _format(time.strftime("%Y-%m-%d %H:%M:%S")),
                 'event_path': _format(event_path),
                 'number_events': _format(number_events),
                 'alpha': _format(str(alpha)),
                 'betas': _format(str(betas)),
                 'lambda': _format(str(lambda_)),
                 'function': _format(function),
                 'method': _format(str(method)),
                 'cpu_time': _format(str(cpu_time)),
                 'wall_time': _format(str(wall_time)),
                 'hostname': _format(socket.gethostname()),
                 'username': _format(getpass.getuser()),
                 'pyndl': _format(__version__),
                 'numpy': _format(np.__version__),
                 'pandas': _format(pd.__version__),
                 'xarray': _format(xr.__version__),
                 'cython': _format(cython.__version__)}

    if attrs is not None:
        for key in set(attrs.keys()) | set(new_attrs.keys()):
            if key in attrs:
                old_val = attrs[key]
            else:
                old_val = ''
            if key in new_attrs:
                new_val = new_attrs[key]
            else:
                new_val = format_('')
            new_attrs[key] = old_val + ' | ' + new_val
    return new_attrs