class getOutOfLoop(Exception): pass try: for i in range(5): for j in range(5): for k in range(5): if i == j ==k ==3: raise getOutOfLoop()#抛出一个异常,就会跳出所有循环 else: print i,'---',j,'---',k except getOutOfLoop: pass print "done" 1. 2. 3. 4. 5. ...
languages = ['Swift', 'Python', 'Go'] # start of the loop for lang in languages: print(lang) print('---') # end of the for loop print('Last statement') Run Code Output Swift --- Python --- Go --- Last statement Here, print('Last statement') is outside the body of the...
for iterating_var in sequence: #iterating_var 变量 sequence 序列 statements(s) 1. 2. 示例1 1 for letter in 'Python': # 第一个实例 2 print ('当前字母 :', letter) 3 4 fruits = ['banana', 'apple', 'mango'] 5 for fruit in fruits: # 第二个实例 6 print( '当前水果 :', frui...
we break out of the loop and close our socket if response.lower() == "closed": break print(f"Received: {response}")最后，在 while 循环之后，使用该方法关闭客户端套接字连接。这可确保正确
Return sends a specified value back to its caller whereas Yield can produce a sequence of values. We should use yield when we want to iterate over a sequence, but don't want to store the entire sequence in memory. import sys # for example when reading a large file, we only care about...
# TODO: Write out the header for the quiz. # TODO: Shuffle the order of the states. # TODO: Loop through all 50 states, making a question for each. 因为这个程序会随机排序问题和答案,你需要导入random模块➊ 来使用它的函数。capitals变量➋ 包含一个字典,以美国各州为键,以它们的首都为值。
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func(*args, **kwargs): loop = asyncio.get_event_loop() return loop.run_until_comple...
Python 中的“For-loop” | | --- | --- | --- | | //让我们初始化一个变量 int I = 3;而(i > 0) {System.out.println("三个 hello ");-我;} | //这是一个迷人的循环for(int I = 0;我<3;i++){控制台。WriteLine(“你好!”);} | #这是一个有趣的循环对于范围(10)内的i:打...
importitertoolsimportmatplotlib.pyplotaspltimportnumpyasnpimportmatplotlib.animationasanimation# 定义生成数据的函数defdata_gen(max_range):# 使用itertools.count()生成无限递增的计数器forcntinitertools.count():# 当计数器超过最大范围时停止生成数据ifcnt>max_range:breakprint(cnt)# 计算时间t和对应的y值,使用...