无锡做网站的企业,新手如何做外贸生意,中国互联网百强企业排名,网站建设改版目的我想把操作符作为一个列表#xff0c;然后从列表中调用一个元素作为操作符。在如果我没有在运算符周围加引号#xff0c;那么列表中逗号的语法错误#xff1a;File p22.py, line 24cat [,-,*]^SyntaxError: invalid syntax如果我把引语放在周围#xff0c;那么…我想把操作符作为一个列表然后从列表中调用一个元素作为操作符。在如果我没有在运算符周围加引号那么列表中逗号的语法错误File p22.py, line 24cat [,-,*]^SyntaxError: invalid syntax如果我把引语放在周围那么我似乎失去了运算符的功能如本例所示^{pr2}$以下是完整代码import randomdef start():print(\n________________________________________)print(| |)print(| Zach\s Tutorifier! |)print(| |)print(| |)print(| Instructions: |)print(| Select the type of math you want |)print(| to practice with: |)print(| 1-Add 2-Subtract 3-Multiply |)print(|--------------------------------------|)start()math int(input( )) - 1cat [,-,*]def problems():which cat[math]x random.randint(0,9)y random.randint(0,9)a (x which y)print(What is %i %s %i? % (x, which, y) )answer input( )if answer a:print(Congratulations! Try again? (Y/N))again input( )if again Y or again y:problems()else:start()else:print(Try again!)problems()
