新的python无效语法*更新

时间:2013-02-08 11:01:41

标签: python syntax

我正在尝试为我的一个课程完成一个程序但是我的语法无效,python对我来说是一个非常新的,所以忍受我的无知。

在“if guess ==(num_x + num_y):”的冒号处弹出无效语法: 如果有人可以提供帮助,我会非常感激。


更新* 固定括号谢谢abarnert但现在我有以下SyntaxError

Traceback (most recent call last):
  File "C:\Users\Franz\Desktop\randomstudy.py", line 48, in <module>
    main()
  File "C:\Users\Franz\Desktop\randomstudy.py", line 25, in main
    guess=int(input(num_x, "-", num_y, "=\n"))
TypeError: input expected at most 1 arguments, got 4

我已将以下代码更新为包括括号。

def main():
    import random
    num_x=random.randint(-50,50)
    num_y=random.randint(-50,50)
    op=random.randint(0,3)
    control=True 
    print("Welcome! Here is your random problem:\n")   
    if op==0:
        while True:
            guess=int(input(num_x, "+", num_y, "=\n"))
            if guess==(num_x+num_y):
                print("Congratulations! You have answered the problem correctly!")
                break     
            else:
                print("I’m sorry, that is not correct.  Please try again.")
    elif op==1:
        while True:
            guess=int(input(num_x, "-", num_y, "=\n"))
            if guess==(num_x-num_y):
                print("Congratulations! You have answered the problem correctly!")
                break     
            else:
                print("I’m sorry, that is not correct.  Please try again.")
    elif op==2:
        while True:
            guess=int(input(num_x, "*", num_y, "=\n"))
            if guess==(num_x*num_y):
                print("Congratulations! You have answered the problem correctly!")
                break    
            else:
                print("I’m sorry, that is not correct.  Please try again.")
    elif op==3:
        while True:
            guess=int(input(num_x, "/", num_y, "=(Please round to two decimal places)\n"))
            if guess==(num_x/num_y):
                print("Congratulations! You have answered the problem correctly!")
                break    
            else:
                print("I’m sorry, that is not correct.  Please try again.")

main()

1 个答案:

答案 0 :(得分:6)

之前的那一行缺少')':

    guess=int(input(num_x, "+", num_y, "=\n")
    if guess==(num_x+num_y):

正如Igor在评论中指出的那样,你还有其他一些也没有关闭括号的行,你也必须修复它们,否则你只需要另外几行SyntaxError。你可能想要考虑使用一个有助于平衡括号和类似问题的编辑器 - 这肯定会让我的生活变得更轻松。

这在Python中并不像大多数其他语言那么常见,但它确实经常发生,当你得到一个无法解释的SyntaxError时,你应该习惯于查看上一行。

(在大多数语言中,几乎任何表达式或语句都可以继续到下一行。在Python中不是这样 - 但如果有一个开括号,则括号表达式 允许继续下一行线。)