13 lines
281 B
Python
13 lines
281 B
Python
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# -*- coding: utf-8 -*-
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def invert(d, flat=False):
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new_dict = d.copy()
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new_dict.clear()
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for key, value in d.items():
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if flat:
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new_dict.setdefault(value, key)
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else:
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new_dict.setdefault(value, []).append(key)
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return new_dict
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