将 "Can only concatenate str (not "int") 添加到从文件读取的值时获取 str"

Question

我希望 bots.txt 被读作 int 而不是 str。但是 none 我在互联网上找到的视频有帮助，或者详细介绍了我如何解决这个问题。

这是我的代码

import time
import os
import random
os.system('mode 88,30')
with open('B://JakraG2//.Bots//bots.txt', 'r') as f:
    aaa = f.read()
counter = aaa
    while True:
    time.sleep(0.05)
    print("Added 1 to bots.txt")
    counter = counter + 1
    lel = "{}".format(counter)
    with open('B://JakraG2//.Bots//bots.txt', 'w') as f:
        f.write("{}".format(lel))

这里是错误

Traceback (most recent call last):
  File "loader.py", line 16, in <module>
    counter = counter + 1
TypeError: can only concatenate str (not "int") to str

bots.txt

Answer 1

当你用f.read读取一个文件时，获取的信息被确定为一个字符串，这就是为什么当你尝试将计数器加1时（f.e 5 + 1），程序认为你正在尝试做这样的事情 "5" + 1.

一个简单的解决方法是声明您从文件中读取的内容是一个整数：

aaa = int(float(f.read()))

Answer 2

读取时的文件始终是字符串 - 您需要转换为整数才能使用整数加法。

import time

# read file 
try:
    with open('bots.txt', 'r') as f:       # you use B://JakraG2//.Bots//bots.txt'
        aaa = f.read().strip()
        counter = int(aaa)
except Exception as e:
    print(e)   # for informational purposes when testing
    counter = 0  # f.e. file not exists or invalid text2number in it

while True:
    time.sleep(0.05)
    print("Added 1 to bots.txt")
    counter = counter + 1
    
    # overwrites existing file
    with open('bots.txt', 'w') as f:       # you use B://JakraG2//.Bots//bots.txt'

        f.write(f"{counter}")

将 "Can only concatenate str (not "int") 添加到从文件读取的值时获取 str"

Getting "Can only concatenate str (not "int") to str" when adding to a value read from a file

python

file-read