python踩坑記： TypeError: can only concatenate str (not "int") to str

一個小小的報錯

代碼

def gcd(x, y):
    (x, y) = (y, x) if x > y else (x, y)
    for factor in range(x, 0, -1):
        if x % factor == 0 and y % factor == 0:
            return factor


if __name__ == '__main__':
    num1 = int(input("請輸入正整數： "))
    num2 = int(input("請輸入正整數： "))
    print("i" + gcd(num1, num2))

代碼報錯

PS G:\vscode_worksapce\vscode_python_workspace> python -u "g:\vscode_worksapce\vscode_python_workspace\test1.py"      
請輸入正整數： 3
請輸入正整數： 9
Traceback (most recent call last):
  File "g:\vscode_worksapce\vscode_python_workspace\test1.py", line 11, in <module>
    print("i" + gcd(num1, num2))
TypeError: can only concatenate str (not "int") to str

原因以及解決

參考了博客https://blog.csdn.net/feng2147685/article/details/86494905以及https://www.cnblogs.com/Jimc/p/9606112.html

其實是python字符串拼接的問題；

if __name__ == '__main__':
    num1 = int(input("請輸入正整數： "))
    num2 = int(input("請輸入正整數： "))
    print("i%d" % (gcd(num1, num2)) + "hahahha")

嗯……