Looping without a for loop 现在我们已经学习了 iterator 以及next和iter函数。我们将要尝试不通过 for 循环来遍历一个 iterable。 我们尝试将 for 循环转成 while 循环: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 deffunky_for_loop(iterable,action_to_do
循环（Loop）是在满足特定条件的情况下重复执行一组语句或操作的过程。Python中有两种主要的循环结构：for...
For example, # iterate from i = 0 to i = 3 for i in range(0, 4): print(i) Run Code Output 0 1 2 3 Here, we used the for loop to iterate over a range from 0 to 3. This is how the above program works. IterationValue of iprint(i)Last item in sequence? 1st 0 Prints ...
counter = count_up_to(5)2.2.2 使用next()函数和for循环遍历生成器 生成器可以通过next()函数逐一获取值,也可以直接在for循环中使用。 print(next(counter)) # 输出: 1 print(next(counter)) # 输出: 2 # 或者使用for循环遍历 for number in count_up_to(5): print(number)2.3 yield与迭代协议的关系...
2. 然后对迭代器调用 next() 方法，并将其返回值赋给变量 word。3. 之后，会执行 for 循环中关联...
forxinfruits: ifx =="banana": break print(x) Try it Yourself » The continue Statement With thecontinuestatement we can stop the current iteration of the loop, and continue with the next: Example Do not print banana: fruits = ["apple","banana","cherry"] ...
首先，__iter__()和__next__()是Python的特殊方法，也称为魔术方法。每个类在创建时都会自动拥有这些方法。__iter__()的主要作用是当我们在for循环中使用"for x in y"时，y会被传递给item()，这个过程实际上就是调用了__iter__()方法。然而，如果y不是默认支持的字符串、列表或元组，我们...
2 12 SETUP_LOOP 19 (to 34) 15 LOAD_NAME 0 (lst) 18 GET_ITER >> 19 FOR_ITER 11 (to 33) 22 STORE_NAME 1 (i) 3 25 LOAD_NAME 1 (i) 28 PRINT_ITEM 29 PRINT_NEWLINE 30 JUMP_ABSOLUTE 19 >> 33 POP_BLOCK >> 34 LOAD_CONST 2 (None) 37 RETURN_VALUE 第...
python关于for循环的几个函数 1.enumerate:返回2个值,1是当前的for循环的第几轮,2是循环得到的数值 enumerateworks by supplying a corresponding index to each element in the list that you pass it. Each time you go through the loop,indexwill be one greater, anditemwill be the next item in the ...
such as iterating over a list, array, or collection until the end of the sequence is reached, or performing a certain action a set number of times. In essence, a for loop is designed to move to the next element in the sequence after each iteration, ensuring that each item is processed...