Python跳出多重循环的方法

Posted 2020-09-27

http://blog.csdn.net/churximi/article/details/51043595

方法1：自定义异常

 

    # -*- coding:utf-8 -*-  
      
    """ 
    功能：python跳出循环 
    """  
    # 方法1：自定义异常  
      
      
    class Getoutofloop(Exception):  
        pass  
    try:  
        for i in range(5):  
            for j in range(5):  
                if i == j == 2:  
                    raise Getoutofloop()  
                else:  
                    print i, ‘----‘, j  
    except Getoutofloop:  
        pass  

 

 

 

方法2：将循环封装为函数，return

方法3：用for...else...语句

    # -*- coding:utf-8 -*-  
      
    """ 
    功能：python跳出循环 
    """  
    # 方法2：for...else...用法，用于跳出指定循环层  
      
    for i in range(5):  
        for j in range(5):  
            for k in range(5):  
                if i == j == k == 3:  
                    break  
                else:      
                    print i, ‘----‘, j, ‘----‘, k  
            else:        # else1  
                continue  
            break        # break1  
        else:            # else2  
            continue  
        break            # break2