break_out_flag = True break if break_out_flag: break 1. 2. 3. 4. 5. 6. 7. 8. 9. 如上所示,break_out_flag变量是一个很好的信使messenger,可以告诉程序何时应该跳出外循环break out of the outer loop。 虽然效果不错,但我们的代码有点不整齐,因为我们添加了一个新变量variable来解决这个简单的...
Here we've added an extra variable in our code, to keep track of whether that outer loop is supposed to break out of itself:with open("numbers.txt") as number_file: total = 0 outer_break = False for line in number_file: for number in line.split(): n = float(number) if n < ...
AI代码解释 >>>names=['pam','jim','michael']>>>if'jim'innames:...print('jim found')...break...File"<stdin>",line3SyntaxError:'break'outside loop>>>if'jim'innames:...print('jim found')...continue...File"<stdin>",line3SyntaxError:'continue'not properlyinloop 在这里,Python很好...
breakkeyword is used inside the loop to break out of the loop. Suppose while iterating over the characters of the string stored in the variablename, you want to break out of it as soon as the character"T"is encountered. This is how it can be done: break关键字在循环内部使用,以脱离循环。
I n c l u d e H e l p outside of the loop Using break in Nested While and For LoopsHere, we have two loops, outer loop is "while True:" which is handling the multiple inputs and inner loop is using to print the table of given number – as input is 0 – inner loop will ...
To break out of a for or while loop without a flag. for element in search: if element == target: print("I found it!") break else: print("I didn't find it!") while i < len(search): element = search[i] if element == target: ...
上下文管理器对象存在以控制with语句,就像迭代器存在以控制for语句一样。 with语句旨在简化一些常见的try/finally用法,它保证在代码块结束后执行某些操作,即使代码块由return、异常或sys.exit()调用终止。finally子句中的代码通常释放关键资源或恢复一些临时更改的先前状态。
In the above example there is another while loop which is "nested" inside the outer loop, this inner loop puts in another check to see if the number % (mod) 2 is 0. In other words, it checks if the number is even and then it prints the statement "The number is even". But there...
try: for i in range(3): try: 1 / i except ZeroDivisionError: # Let's throw it here and handle it outside for loop raise ZeroDivisionError("A trivial divide by zero error") finally: print("Iteration", i) break except ZeroDivisionError as e: print("Zero division error occurred", e)Out...
import sys, keywordout = sys.stdout #保存标准输出流for i, kw in enumerate(keyword.kwlist+keyword.softkwlist, 1):fn = ("%02d" % i) + "." + kw + ".txt"with open(fn, 'w') as f:sys.stdout = fhelp(kw)sys.stdout = out #恢复标准输出流print("end") ...