Python-ValueError:以10为底的int()的无效文字:'' [英] Python - ValueError: invalid literal for int() with base 10: ''

问题描述

帮助，当我尝试从字符串中提取整数时，我会不断收到ValueError:int()的无效文字，基数为10:"！

Help, I keep getting ValueError: invalid literal for int() with base 10: '' when I try to extract an integer from a string!

from string import capwords
import sys,os
import re

def parseint(List):
    newlist = [i for i in List if isinstance(i, int)]
    return newlist
def getint(string):
    number = [int(x) for x in string.split("-")]
    return number

file=open('./Class 1/usr_score.data','r')
text=file.read()

def get_num(x):
    return int(''.join(ele for ele in x if ele.isdigit()))

split = text.split(",")

split.sort(key = lambda k : k.lower())
for i in split:
    print(i)

print ('---------------------------------------')
list1=[]
for i in split:
    list1.append(str(i))

num_list1=[]

for i in list1:
    ints = re.findall(r'\b\d+\b', i)

    #ints = getint(i)[0]
    for i in ints:
        int1=i
    num_list1.append(i)

    #num_list1 = parseint(list1)

num_list=num_list1


for i in num_list:
    print(i)

文件usr_score.data包含:

The file usr_score.data contains:

user-1,aaa-1,usr-3,aaa-4,

我的代码是，它包含游戏的得分，我希望我的程序将它们按字母顺序排序.有人可以解决我的问题吗?

What my code is is that it contains scores for a game and I want my program to sort them into alphabetical order. Can someone please fix my problem?

注意:程序中的某些代码尚未使用.

Note: Some of the code in the program has not been used.

推荐答案

您的输入数据的末尾有一个'，'，这会导致split()除了得分以外还生成一个空字符串:

Your input data has a ',' at the end, which causes split() to generate an empty string in addition to the scores:

['user-1', 'aaa-1', 'usr-3', 'aaa-4', '']

int('')不起作用；您应该删除该空字符串，或者对其进行处理.

int('') doesn't work; you should either remove that empty string, or deal with it.

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