Source code for

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2023 Satpy developers
# This file is part of satpy.
# satpy is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
# satpy is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with
# satpy.  If not, see <>.
"""CF decoding."""
import copy
import json
from datetime import datetime

[docs] def decode_attrs(attrs): """Decode CF-encoded attributes to Python object. Converts timestamps to datetime and strings starting with "{" to dictionary. Args: attrs (dict): Attributes to be decoded Returns (dict): Decoded attributes """ attrs = copy.deepcopy(attrs) _decode_dict_type_attrs(attrs) _decode_timestamps(attrs) return attrs
[docs] def _decode_dict_type_attrs(attrs): for key, val in attrs.items(): attrs[key] = _str2dict(val)
[docs] def _str2dict(val): """Convert string to dictionary.""" if isinstance(val, str) and val.startswith("{"): val = json.loads(val, object_hook=_datetime_parser_json) return val
[docs] def _decode_timestamps(attrs): for key, value in attrs.items(): timestamp = _str2datetime(value) if timestamp: attrs[key] = timestamp
[docs] def _datetime_parser_json(json_dict): """Traverse JSON dictionary and parse timestamps.""" for key, value in json_dict.items(): timestamp = _str2datetime(value) if timestamp: json_dict[key] = timestamp return json_dict
[docs] def _str2datetime(string): """Convert string to datetime object.""" try: return datetime.fromisoformat(string) except (TypeError, ValueError): return None