为什么我的代码不起作用 AttributeError: 'int' object has no attribute 'isdigit'

Question

#Guess the num
import random
def is_valid_num(num):
    if num.isdigit() and 1 <= int(num) <= 100:
        return True
    else:
        return False

def main():
    number = random.randint(1,100)
    guessed_number = False
    guess = input('enter a num')
    #guess = (input('enter a num'))
    num_of_guesses = 0
    while not guessed_number:
        if not is_valid_num(guess):
            #return False
            guess = input('i count only digits enter 1<num<100')
            continue
        else:
            num_of_guesses += 1
            #break
            guess = int(guess)
        if guess < number:
            print ('entered number is low')

        elif guess > number:
            print ('entered number is high')

        else:
            print ('you got in',num_of_guesses, 'guesses')
            guessed_number = True
main()

如果随机数是系统 51 并且我们按下 50 它将打印得太低，然后继续这个过程假设我们输入 51 output you got in 2 guesses

Answer 1

isdigit()是一个字符串方法，它不适用于int输入。

改变这个：

guess = int(input('enter a num'))

对此：

guess = input('enter a num')

编辑后的代码：

#Guess the num
import random
def is_valid_num(num):
    if num.isdigit() and 1 <= int(num) <= 100:
        return True
    else:
        return False

def main():
    number = random.randint(1,100)
    guessed_number = False
    guess = input('enter a num')
    #guess = (input('enter a num'))
    num_of_guesses = 0
    while not guessed_number:
        if not is_valid_num(guess):
            #return False
            guess = input('i count only digits enter 1<num<100')
            continue
        else:
            num_of_guesses += 1
            break

    guess = int(guess)
    if guess < number:
        print ('entered number is low')
    elif guess > number:
        print ('entered number is high')
    else:
        print ('you got in',num_of_guesses, 'guesses')
        guessed_number = True
main()

Answer 2

@Thanks Issac Full code is below

#Guess the num
import random
def is_valid_num(num):
    if num.isdigit() and 1 <= int(num) <= 100:
        return True
    else:
        return False

def main():
    number = random.randint(1,100)
    guessed_number = False
    guess = input('enter a num')
    #guess = (input('enter a num'))
    num_of_guesses = 0
    while not guessed_number:
        if not is_valid_num(guess):
            #return False
            guess = input('i count only digits enter 1<num<100')
            continue
        else:
            num_of_guesses += 1
            #break

            guess = int(guess)
        if guess < number:
            guess = (input('entered number is low try again'))
        elif guess > number:
            guess = (input('entered number is high try again'))
        else:
            print ('you got in',num_of_guesses, 'guesses')
            guessed_number = True
main()

Output 如下

>>enter a num55
entered number is high try again55
entered number is high try again45
entered number is high try again88
entered number is high try again30
entered number is high try again10
entered number is low try again20
entered number is low try again25
entered number is high try again22
entered number is low try again23
you got in 10 guesses