从文件中删除行，在循环读取 python 内

Question

我在读取名为 ReadingFile 的文件时遇到一个奇怪的问题。所以我要做的是读取名为 ReadingFile 的文件中的所有内容，并在读取一行后立即删除在 ReadingFile.

中读取的那一行

代码：

import os
import logging

logger = logging.getLogger(__name__)  
logger.setLevel(logging.INFO)

file_handler = logging.FileHandler('Test.log')
file_formatter = logging.Formatter('[%(asctime)s]: %(message)s')
file_handler.setFormatter(file_formatter)

logger.addHandler(file_handler)

def RemoveOneLine(file, ToDelete):
    with open(file, 'r') as f:
        lines = f.readlines()

    with open(file, 'w') as f:
        for line in lines:
            if line.strip('\n') != ToDelete:
                f.write(line)

def Test(filename):
    with open(filename, 'r') as a_file:
        for line in a_file:
            test_line = line.strip()
            
            logger.info('was [{}]'.format(test_line))
            RemoveOneLine(filename, test_line)

Test('ReadingFile')

ReadingFile的内容，我会上传到Pastebin，因为它太大了。 https://pastebin.com/9kTwv5Kj 这个大名单是什么？这是一个帐户列表，别担心。它们是 public 密钥。知道密钥不会造成任何伤害。

问题。

一段时间后，我得到截断的数据和错误的数据，错误的 public 键.. public 键太长或太短，或者相同长度的键但在 ReadingFile 中不存在..

正如您在 pastebine 中看到的那样，第一行是 GA25ETO3HJFO4NJLM2PG25WGHWMX35DS4KI7BLY2PA5DTNCDUN2UUSVP 当循环到达第 GAL7MUG4G3MMO24JKESAMWWIAJT4L7TKX74EONZSB7RKDUGAYSWUQ7JG 行时它开始截断数据..

比较屏幕，左侧未更改，右侧截断..

我需要的只是：Read file -> Read Line -> Remove Line that was read -> Read again first line -> Close program when file is empty..也许我做了方法不对，我是 python.

的新手

怎么了？

Answer 1

试试这个。代码更正如下：

添加close()方法，每次完成文件处理。
在Test()函数[=27]中添加missedreadlines()方法 =].

[代码]

import os import logging logger = logging.getLogger(__name__) logger.setLevel(logging.INFO) #You can clear log file eatch time using mode='w' #OR you can use mode='a' to Append it file_handler = logging.FileHandler('Test.log', mode='w') file_formatter = logging.Formatter('[%(asctime)s]: %(message)s') file_handler.setFormatter(file_formatter) logger.addHandler(file_handler) def RemoveOneLine(file, ToDelete): with open(file, 'r') as f: lines = f.readlines() f.close() # we can now close the file after readlines() with open(file, 'w') as f: for line in lines: if line.strip('\n') != ToDelete: f.write(line) f.close() # we can close the file now after we have update it def Test(filename): with open(filename, 'r') as a_file: lines_a_file = a_file.readlines() #should add readlines() here a_file.close() # we can now close the file after readlines() for line in lines_a_file: test_line = line.strip() logger.info('was [{}]'.format(test_line)) RemoveOneLine(filename, test_line) Test('ReadingFile')

从文件中删除行，在循环读取 python 内

Remove line from file, inside a loop reading python

python

python-3.8