删除字典内所有元素。
dict.clear()复制
dict.clear()
def test(): arr={"key1":1,"key2":2,"key3":3} print(arr) # 输出：{"key1":1,"key2":2,"key3":3} # 执行清空 arr.clear() print(arr) # 输出：{}复制
def test():
arr={"key1":1,"key2":2,"key3":3}
print(arr)
# 输出：{"key1":1,"key2":2,"key3":3}
# 执行清空
arr.clear()
# 输出：{}
