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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                break?語句和 C 中的類似,用于跳出最近的一級?for?或?while?循環。 循環可以有一個?else?子句;它在循環迭代完整個列表(對于?for?)或執行條件為 false (對于while?)時執行,但循環被?break?中止的情況下不會執行。以下搜索素數的示例程序演示了這個子句: ~~~ >>> for n in range(2, 10): ... for x in range(2, n): ... if n % x == 0: ... print(n, 'equals', x, '*', n//x) ... break ... else: ... # loop fell through without finding a factor ... print(n, 'is a prime number') ... 2 is a prime number 3 is a prime number 4 equals 2 * 2 5 is a prime number 6 equals 2 * 3 7 is a prime number 8 equals 2 * 4 9 equals 3 * 3 ~~~ (Yes, 這是正確的代碼。看仔細:else?語句是屬于?for?循環之中,?**不是**?if?語句。) continue?語句是從 C 中借鑒來的,它表示循環繼續執行下一次迭代: ~~~ >>> for num in range(2, 10): ... if num % 2 == 0: ... print("Found an even number", num) ... continue ... print("Found a number", num) Found an even number 2 Found a number 3 Found an even number 4 Found a number 5 Found an even number 6 Found a number 7 Found an even number 8 Found a number 9 ~~~
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