1. update()方法
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a = {'one': 1, 'two': 2, 'three': 3}
a.update({'one':4.5, 'four': 9.3})
print(a)
输出:
{'one': 4.5, 'two': 2, 'three': 3, 'four': 9.3}
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a = {'one': 1, 'two': 2, 'three': 3}
a.update({'one':4.5, 'four': 9.3})
print(a)
输出:
{'one': 4.5, 'two': 2, 'three': 3, 'four': 9.3}
