怎么理解Python迭代器与生成器?在Python中,使用for ... in ... 可以对list.tuple.set和dict数据类型进行迭代,可以把所有数据都过滤出来.如下: for element in [1, 2, 3]: print(element) for element in (1, 2, 3): print(element) for key in {'one':1, 'two':2}: print(key) for char in "123": pr
三元运算 对if-else判断的简写 >>> age = 18 >>> res = "You are so young!" if age < 18 else "You are so eld!" ### 如果满足条件就返回前面的内容,不满足就返回后面的内容 >>> print(res) You are so eld! 正则表达式 >>> test_list = [1,2,3,4,5] >