CODEWITHSUNDEEP
pythonlistsum
Kacper
Kacper

Reputation: 79

Trying to print(sum(list)) but getting error TypeError: unsupported operand type(s) for +: 'int' and 'str'

I'm trying to sum a list which has only integers in it, but I'm getting error TypeError: unsupported operand type(s) for +: 'int' and 'str' in line 22. This is a 'rock paper scissors' game

import random
import time


score = []

while True:
    print('r/p/s')
    x=input('You: ')
    y=random.randint(1,3)
    if str(y) == '1':
        print('CPU: r')
    elif str(y) == '2':
        print('CPU: p')
    elif str(y) == '3':
        print('CPU: s')

    if x == 'r' and str(y) == '3' or x == 'p' and str(y) == '1' or x == 's' and str(y) == '2':
        print('WIN')
        score.append('1')
        print('SCORE:',end='')
        print(sum(score))
    elif x == 'r' and str(y) == '1' or x == 'p' and str(y) == '2' or x == 's' and str(y) == '3':
        print('TIE')
    elif x == 'r' and str(y) == '2' or x == 'p' and str(y) == '3' or x == 's' and str(y) == '1':
        print('LOSS')
    if input('again? (y/n) ') == 'y':
        continue
    else:
        print('     --------      ')
        print('THANKS FOR PLAYING!')
        print('     --------      ')
        time.sleep(2)
        break

Upvotes: 0

Views: 204

Answers (3)

Eternal
Eternal

Reputation: 933

You are appending string to list score.append('1') here '1' is a string do this instead score.append(1)

Upvotes: 1

Diogenis Siganos
Diogenis Siganos

Reputation: 797

You are not appending integers to the array. Instead, you are appending strings with integer values!

You should do the following:

import random
import time

score = []

while True:
    print('r/p/s')
    x = input('You: ')
    y = random.randint(1,3)
    if str(y) == '1':
        print('CPU: r')
    elif str(y) == '2':
        print('CPU: p')
    elif str(y) == '3':
        print('CPU: s')

    if x == 'r' and str(y) == '3' or x == 'p' and str(y) == '1' or x == 's' and str(y) == '2':
        print('WIN')
        score.append(1)
        print('SCORE:',end='')
        print(sum(score))
    elif x == 'r' and str(y) == '1' or x == 'p' and str(y) == '2' or x == 's' and str(y) == '3':
        print('TIE')
    elif x == 'r' and str(y) == '2' or x == 'p' and str(y) == '3' or x == 's' and str(y) == '1':
        print('LOSS')
    if input('again? (y/n) ') == 'y':
        continue
    else:
        print('     --------      ')
        print('THANKS FOR PLAYING!')
        print('     --------      ')
        time.sleep(2)
        break

Upvotes: 2

tdpr
tdpr

Reputation: 272

You use score.append("1"), adding a string to a list. Then, you use sum(score), which cannot work since it now contains a string. Use score.append(1)

Upvotes: 2

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