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| ebe0dd03187a5c3138ea12ca4beb13643679fe21 | CFTimeIndex (#1252) * Start on implementing and testing NetCDFTimeIndex * TST Move to using pytest fixtures to structure tests * Address initial review comments * Address second round of review comments * Fix failing python3 tests * Match test method name to method name * First attempts at integrating NetCDFTimeIndex into xarray This is a first pass at the following: - Resetting the logic for decoding datetimes such that `np.datetime64` objects are never used for non-standard calendars - Adding logic to use a `NetCDFTimeIndex` whenever `netcdftime.datetime` objects are used in an array being cast as an index (so if one reads in a Dataset from a netCDF file or creates one in Python, which is indexed by a time coordinate that uses `netcdftime.datetime` objects a NetCDFTimeIndex will be used rather than a generic object-based index) - Adding logic to encode `netcdftime.datetime` objects when saving out to netCDF files * Cleanup * Fix DataFrame and Series test failures for NetCDFTimeIndex These were related to a recent minor upstream change in pandas: https://github.com/pandas-dev/pandas/blame/master/pandas/core/indexing.py#L1433 * First pass at making NetCDFTimeIndex compatible with #1356 * Address initial review comments * Restore test_conventions.py * Fix failing test in test_utils.py * flake8 * Update for standalone netcdftime * Address stickler-ci comments * Skip test_format_netcdftime_datetime if netcdftime not installed * A start on documentation * Fix failing zarr tests related to netcdftime encoding * Simplify test_decode_standard_calendar_single_element_non_ns_range * Address a couple review comments * Use else clause in _maybe_cast_to_netcdftimeindex * Start on adding enable_netcdftimeindex option * Continue parametrizing tests in test_coding_times.py * Update time-series.rst for enable_netcdftimeindex option * Use :py:func: in rst for xarray.set_options * Add a what's new entry and test that resample raises a TypeError * Move what's new entry to the version 0.10.3 section * Add version-dependent pathway for importing netcdftime.datetime * Make NetCDFTimeIndex and date decoding/encoding compatible with datetime.datetime * Remove logic to make NetCDFTimeIndex compatible with datetime.datetime * Documentation edits * Ensure proper enable_netcdftimeindex option is used under lazy decoding Prior to this, opening a dataset with enable_netcdftimeindex set to True and then accessing one of its variables outside the context manager would lead to it being decoded with the default enable_netcdftimeindex (which is False). This makes sure that lazy decoding takes into account the context under which it was called. * Add fix and test for concatenating variables with a NetCDFTimeIndex Previously when concatenating variables indexed by a NetCDFTimeIndex the index would be wrongly converted to a generic pd.Index * Further namespace changes due to netcdftime/cftime renaming * NetCDFTimeIndex -> CFTimeIndex * Documentation updates * Only allow use of CFTimeIndex when using the standalone cftime Also only allow for serialization of cftime.datetime objects when using the standalone cftime package. * Fix errant what's new changes * flake8 * Fix skip logic in test_cftimeindex.py * Use only_use_cftime_datetimes option in num2date * Require standalone cftime library for all new functionality Add tests/fixes for dt accessor with cftime datetimes * Improve skipping logic in test_cftimeindex.py * Fix skipping logic in test_cftimeindex.py for when cftime or netcdftime are not available. Use existing requires_cftime decorator where possible (i.e. only on tests that are not parametrized via pytest.mark.parametrize) * Fix skip logic in Python 3.4 build for test_cftimeindex.py * Improve error messages when for when the standalone cftime is not installed * Tweak skip logic in test_accessors.py * flake8 * Address review comments * Temporarily remove cftime from py27 build environment on windows * flake8 * Install cftime via pip for Python 2.7 on Windows * flake8 * Remove unnecessary new lines; simplify _maybe_cast_to_cftimeindex * Restore test case for #2002 in test_coding_times.py I must have inadvertently removed it during a merge. * Tweak dates out of range warning logic slightly to preserve current default * Address review comments | 2018-05-13T05:19:09Z | 2018-05-13T05:19:09Z | f04422bfa03dadc75fab6ce64de238fbe48f5be4 | 5f199557d0f8f69fbea5e027a407146e2669a812 | 13221727 | 6628425 |