摘要:
# a = 100 #不可变类型,打印结果为200,100 a = [100] def test(num): num+=num #在原来的a变量上直接修改,打印结果为[100,100],[100,100] #num = num + num #创建一个新的引用,打印结果为[100,100],[100] 阅读全文
摘要:
list = [{"name":"hello","age":12},{"name":"world","age":5},{"name":"today","age":23}] list.sort(key=lambda x:x["age"]) print(list) 匿名函数当做实参 def test(a 阅读全文