以下是一个简单的序列图,展示了跳出当前循环和外部循环的过程: PythonUserPythonUseralt[Condition True][Condition False]alt[Condition True][Condition False]Start loopCheck conditionExit current loopContinue to next iterationIf nested loopExit outer loopContinue nested loop 希望这些内容能够帮助你更深入理解如何在Python中控制循环。如果你有任何问题或需要进...
continueloop = input("是否进行新测验:是的话输入Y继续测验,否则输入N退出测验!\n") if continueloop == "N": print("测验结束。") sys.exit() if __name__ == "__main__": continueloop = "Y" Four_Operations_Quiz_Loop(continueloop) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12....
在Python中没有switch语句 If语句 if condition: do sth elif condition: Do sth else: Do sth while语句有一个可选的else从句 while condition: do sth else: do sth for循环 for i in range( 1, 5): # 即序列[1, 2, 3, 4] print i else: print 'The for loop is over' break语句 如果你...
最常见的流程控制语句是if语句。如果语句的条件是True,那么if语句的子句(即if语句后面的块)将会执行。如果条件为False,则跳过该子句。 简单地说,if语句可以理解为,“如果这个条件为真,则执行子句中的代码”。在 Python 中,if语句由以下内容组成: if关键字 条件(即计算结果为True或False的表达式) 一个冒号 从下...
The program first evaluates the while loop condition. If the condition of the loop is true, then the program enters the loop and executes the body of the while loop. It continues to execute the body of the while loop as long as the condition is true. When it is false, the program com...
明显大于100，所以条件为真 就执行下边语句了while True 是一个死循环，需要配合 if condition ： ...
if element == target: print("I found it!") break i += 1 else: print("I didn't find it!") Similarly, can use break to quit a loop, or use continue to skip over certain code. sort by key lst = [[1, 2], [2, 3]] ...
Current fruit: apple Current fruit: banana Current fruit: cherry Loop finished! 【5】退出循环(break) (1)语法 while condition: # 循环体 if some_condition: break # 退出循环 (2)使用 count = 0 while count < 5: print(count) if count == 3: break #当 count 等于 3 时,退出循环 count ...
thread.exit()# 当func返回时,线程同样会结束 # 启动一个线程,线程立即开始运行 # 这个方法与thread.start_new_thread()等价 # 第一个参数是方法,第二个参数是方法的参数 thread.start_new(func,())# 方法没有参数时需要传入空tuple # 创建一个锁(LockType,不能直接实例化) ...
" block will always test first when we run the condition block. If the condition is satisfied, the code within"if "is executed and we exit out of the conditional block. If the condition does not satisfy, we move ahead to the first"elif "block and the same process follows till the end...