Question

我正在尝试在python中进行测验，但我一直收到无效的语法错误。

#This is for addition questions.

if (question=add)  <---- That is where i get the error
for i in range(0,10):
    first_number_add=random.randint(1,50)
    second_number_add=random.randint(1,50)
    answer=int(input(str(first_number_add) + '+' + str(second_number_add) + '='))
    sum=first_number_add+second_number_add
    if (answer==sum):
        print ('Correct')
        stats['correct'] += 1
    else:
        print ('Incorrect.')
        stats['incorrect'] += 1

Answer 1

要进行比较，您需要使用==：

if question==add:   #you dont need bracket here
    # do your stuff

sum是内置的sum函数，不要将它用于变量名

Answer 2

替换为if question == add:并缩进代码的其余部分。

另外，请勿使用sum作为变量名称。这是一个很有用的功能。

if question == add:
    for i in range(10):
        first_number_add = random.randint(1,50)
        second_number_add = random.randint(1,50)
        answer = int(input(str(first_number_add) + '+' + str(second_number_add) + '='))
        the_sum = first_number_add + second_number_add
        if answer == the_sum:
            print('Correct')
            stats['correct'] += 1
        else:
            print('Incorrect.')
            stats['incorrect'] += 1

Answer 3

if question==add:  
    for i in range(0,10):
        first_number_add=random.randint(1,50)
        second_number_add=random.randint(1,50)
        answer=int(input(str(first_number_add) + '+' + str(second_number_add) + '='))
        sum=first_number_add+second_number_add
        if answer==sum:
            print ('Correct')
            stats['correct'] += 1
        else:
            print ('Incorrect.')
            stats['incorrect'] += 1

你不需要parantheses。在for循环和if语句之后，你还必须在缩进中放置4个空格。作为@Joel评论，4个空格是标准的，你可以将它改为8-16等。

Answer 4

if question==add:  
    for i in range(0,10):
        first_number_add=random.randint(1,50)
        second_number_add=random.randint(1,50)
        answer=int(input(str(first_number_add) + '+' + str(second_number_add) + '='))
        sum=first_number_add+second_number_add
        if answer==sum:
            print ('Correct')
            stats['correct'] += 1
        else:
            print ('Incorrect.')
            stats['incorrect'] += 1

在python中不需要括号...请记住，为每个块和循环语句提供一致的缩进（相同数量的空格）。

Python无效语法IF语句

4 个答案: