What is for loop in Python Example: Print first 10 numbers using a for loop for loop with range() How for loop works Why use for loop? If-else in for loop Loop Control Statements in for loop Break for loop Continue Statement in for loop ...
for num in range(10): if num == 5: break # 退出循环 print(num, end=' ') # 打印0到4for num in range(10): if num % 2 == 0: continue # 跳过偶数 print(num, end=' ') # 只打印奇数 else 子句：与for或while循环一起使用，如果循环正常结束（即不是因为break退出的），则执行else子...
In this article, we’ll explore the Python for loop in detail and learn to iterate over different sequences including lists, tuples, and more. Additionally, we’ll learn to control the flow of the loop using thebreak and continue statements. When to use for Loop Anytime you have need to...
具体的方法是在需要重新启动的地方插入一个标签,然后使用continue语句跳转到该标签。这样就可以重新开始外部的for循环。 下面是一个示例代码: 代码语言:txt 复制 for i in range(3): print("外部循环:", i) for j in range(3): if j == 1: print("重新启动内部循环") continue # 跳转到重新启动的地方...
foriinrange(my_list_length): output_list.append(i * 2) returnoutput_list 通过将列表长度计算移出for循环,加速1.6倍,这个方法可能很少有人知道吧。 # Summary Of Test Results Baseline: 112.135 ns per loop Improved: 68.304 ns per loop % Impro...
03 break和continue语句 break语句可以使程序跳出循环语句,从而执行循环体之外的程序,即break语句可以提前结束循环。例如,模拟switch分支结构使用了break语句。 operator ="+"x =1y =2forcaseinswitch(operator):# switch只能用于for... in...循环...
# 循环loop # 有限循环 ,次数限制 无限循环=死循环continue结束本次循环,继续下一次循环break跳出整个当前的循环 # for循环 # ## 实例1: ###基本语法foriinrange(100):print(i)#range(起始位,参数,步长)forjinrange(1,100,2):#包括1,不包括100,顾头不顾尾print(j) ...
break 2和continue 2。 正常二层循环 例:在未加入上述命令前,先看看下面二层循环的正常输出。 #!/bin/bash for ((a=1; a<=3; a++)) //外层循环 do echo "outer loop: $a" //外层循环输出 for ((b=1; b<=4; b++)) //内层循环 ...
However, the loop continues to the next iteration. This is why C++ is displayed in the output. Visit Python break and continue article to learn more. Nested for loops A loop can also contain another loop inside it. These loops are called nested loops. In a nested loop, the inner loop ...
循环可以通过break语句提前结束,或者通过continue语句跳过当前迭代。 应用场景: 遍历列表或其他可迭代对象:使用for循环可以方便地遍历列表、元组、字符串等数据结构,对每个元素执行相同的操作。 实现计数器:通过循环可以实现计数器的功能,例如统计某个条件满足的次数。