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                ??一站式輕松地調用各大LLM模型接口,支持GPT4、智譜、豆包、星火、月之暗面及文生圖、文生視頻 廣告
                # Python 程序:打印斐波那契序列 > 原文: [https://www.programiz.com/python-programming/examples/fibonacci-sequence](https://www.programiz.com/python-programming/examples/fibonacci-sequence) #### 在此程序中,您將學習使用`while`循環打印斐波那契數列。 要理解此示例,您應該了解以下 [Python 編程](/python-programming "Python tutorial")主題: * [Python `if...else`語句](/python-programming/if-elif-else) * [Python `while`循環](/python-programming/while-loop) * * * 斐波那契數列是 0、1、1、2、3、5、8 ...的整數序列。 前兩項為 0 和 1。所有其他項均通過將前兩項相加而獲得。 這意味著第 n 個項是第(`n-1`)個和第(`n-2`)個項的總和。 ## 源代碼 ```py # Program to display the Fibonacci sequence up to n-th term nterms = int(input("How many terms? ")) # first two terms n1, n2 = 0, 1 count = 0 # check if the number of terms is valid if nterms <= 0: print("Please enter a positive integer") elif nterms == 1: print("Fibonacci sequence upto",nterms,":") print(n1) else: print("Fibonacci sequence:") while count < nterms: print(n1) nth = n1 + n2 # update values n1 = n2 n2 = nth count += 1 ``` **輸出** ```py How many terms? 7 Fibonacci sequence: 0 1 1 2 3 5 8 ``` 在這里,我們將術語數存儲在`nterms`中。 我們將第一項初始化為 0,第二項初始化為 1。 如果項數大于 2,我們使用`while`循環通過將前兩個項相加來查找序列中的下一個項。 然后,我們交換變量(對其進行更新)并繼續進行該過程。 您也可以使用遞歸解決此問題: [Python 程序:使用遞歸打印斐波那契序列](/python-programming/examples/fibonacci-recursion "Python program to print the Fibonacci sequence using recursion")。
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