TypeError: 'int' object is not callable In Python

Bit of a python noob and I'm required to add a regular expression in my code but can not get it to work :/ i have searched the error message on google and tried to figure out whats wrong but no luck so i figured next best thing to do would be to ask directly. Here is the code so far:

有点python noob,我需要在我的代码中添加一个正则表达式,但无法让它工作:/我已经搜索了谷歌上的错误消息,并试图弄清楚什么是错的但没有运气所以我想下一个最好的要做的事就是直接问。这是到目前为止的代码:

# allows us to access a random 'key' in the dictionary
import random
import re

# Contains the question and it's correct answer
my_dict =   {
            "A form of Protectionism that imposes a tax on imports" : "tariff",
            "....is quantity of a good or service that consumers are willing and able to     buy at a given price in a given time period" : "Demand", 
            "....is the quantity of a good or service that a producer is willing and able   to supply onto the market at a given price in a given time period" : "Supply",
            "By using ..... businesses can bring down their average costs by producing on a larger scale" : "Economies of scale",
            "The cost of the next best alternative" : "Opportunity Cost",
            ".... is the transfer of assets from the public (government) sector to the private sector." : "Privatisation"
        }


# welcome message
print("Economics Revision App")
print("=======================")



# the quiz will end when this variable becomes 'False'
playing = True


# While the game is running
while playing == True:

    # set the score to 0
    score = 0

    # gets the number of questions the player wants to answer
    num = int(input("\nHow many questions would you like: "))
    num = re.match("r\d[0-9]{2}$", num())
    if match:
        print ('foo')

    # loop the correct number of times
    for i in range(num):

        # the question is one of the dictionary keys, picked at random
        question = (random.choice( list(my_dict.keys())))
        # the answer is the string mapped to the question key
        answer = my_dict[question]

        # print the question, along with the question number
        print("\nQuestion " + str(i+1) )
        print(question  + "?")

        # get the user's answer attempt
        guess = input("> ")

        # if their guess is the same as the answer
        if guess.lower() == answer.lower():
            # add 1 to the score and print a message
            print("Correct!")
            score += 1
        else:
            print("Incorrect guess again!")

    # after the quiz, print their final score  
    print("\nYour final score was " + str(score))

    # store the user's input...
    again = input("Enter any key to play again, or 'q' to quit.")

    #... and quit if they types 'q'
    if again.lower() == 'q':
        playing = False

The code I'm struggling with in questions

我在问题中苦苦挣扎的代码

1 个解决方案

#1

num = re.match("r\d[0-9]{2}$", num())

num = re.match(“r \ d [0-9] {2} $”,num())

num is simply an interger, so num() is invalid.

num只是一个整数,因此num()无效。

Should be something like match = re.match("r\d[0-9]{2}$", str(num))

应该是匹配= re.match(“r \ d [0-9] {2} $”,str(num))

1) it should be match right?

1)它应该匹配吗?

2) re is working on str, so the argument passed should be str(num)

2)re正在处理str,所以传递的参数应该是str(num)

Then the code should be fine and fun as well. :)

然后代码应该很好,也很有趣。 :)

#1