Fixes #310
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"""Utility functions and classes for the STIX2 library."""
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"""Utility functions and classes for the STIX2 library."""
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from collections import Mapping
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try:
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from collections.abc import Mapping
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except ImportError:
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from collections import Mapping
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import copy
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import copy
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import datetime as dt
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import datetime as dt
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import json
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import json
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