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📜  获取字典python代码示例中的键数

📅  最后修改于: 2022-03-11 14:45:28.345000             🧑  作者: Mango

代码示例1
#Call len(obj) with a dictionary as obj to count the number 
#of key-value pairs in the dictionary.

a_dictionary = {"a": 1, "b": 2}
print(len(a_dictionary))

OUTPUT:
2