Python写入文件

Question

我在debian服务器上运行的一个小python脚本中遇到了一些问题.

首先它应该做什么:
- 从服务器获取列表 - >工作
- 转换为真正的字符串列表 - >工作
- 写入文件 - >什么都不做...

已经尝试在python接口(>>>)中使用相同的代码,它按照应该的方式编写所有内容.
文件已经创建并且上面有一个chmod 777.
即使没有意外检查该scipt的另一个实例正在运行哪个锁定文件但没有...

任何人都知道为什么它不会在启动时写入文件但在界面中？

现在这里是脚本本身:

#!/usr/bin/env python

import urllib
import sys
import time
import re

exitNodes = []
readableNodes = []
class BlockTor():
    def getListFromWeb(myself):
        url = "https://www.dan.me.uk/torlist/"
        #url = "file:///E:/test.txt"

        try:
            for line in urllib.request.urlopen(url):
                exitNodes.append(str(line, encoding='utf8'))

            for node in exitNodes:
                readableNodes.append(re.sub('\\n', '', node))
            #print(exitNodes)
            #sys.exit()
        except:
            try:
                f = open("/var/log/torblocker.log", "a")
                #f = open("E:\\logfile.log", "a")
                f.write("[" + time.strftime("%a, %d %b %Y %H:%M") + "] Error while loading new tornodes")
                f.close()
            except:
                print("Can't write log")
                pass
            sys.exit()
            pass


    def buildList(myself):
        f = open("/etc/apache2/torlist/tor-ip.conf", "w")
        #f = open ("E:\\test-ips.conf", "w")
        f.write('<RequireAll>\n')
        f.write('   Require all granted\n')
        for line in readableNodes:
            f.write('   Require not ip ' + line + '\n')
        f.write('</RequireAll>')
        f.close()
        try:
            f = open("/var/log/torblocker.log", "a")
            #f = open("E:\\logfile.log", "a")
            f.write("[" + time.strftime("%a, %d %b %Y %H:%M") + "] Sucessfully updated tor blacklist")
            f.close()
        except:
            pass


    def torhandler(myself):
        BlockTor.getListFromWeb(myself)
        BlockTor.buildList(myself)


if __name__ == "__main__":
    asdf = BlockTor()
    BlockTor.torhandler(asdf)

编辑:
忘了提 - 如果你想测试它要小心:这台服务器每30分钟只允许一个请求

Answer 1

要连接字符串,请使用+运算符.&是按位AND - 用两个字符串调用它将导致TypeError:

>>> "[" & ""
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for &: 'str' and 'str'

你的毯子可以except防止这种错误.更换

try:
    f = open("/var/log/torblocker.log", "a")
    #f = open("E:\\logfile.log", "a")
    f.write("[" & time.strftime("%a, %d %b %Y %H:%M") & "] Sucessfully updated tor blacklist")
    f.close() # ^                                     ^
except:
    pass

同

with open("/var/log/torblocker.log", "a") as torf:
    torf.write("[" + time.strftime("%a, %d %b %Y %H:%M") + "] " +
               "Sucessfully updated tor blacklist")

如果要在无法写入文件时忽略异常,请将其包围try .. except IOError:.