获取 txt 文件中不是第一部分或不存在于 python 中另一个文件行中的行

Question

我有两个 txt 文件，需要在新的 txt 文件中获取输出：

一个文件具有以下内容（名为 f.txt）：

interface Eth-Trunk50
interface Eth-Trunk51
interface Eth-Trunk60
interface Eth-Trunk60.2535
interface Eth-Trunk100
interface GigabitEthernet0/0/0
interface GigabitEthernet1/1/1
interface GigabitEthernet1/1/4
interface GigabitEthernet1/1/10

另一个文件包含以下行（名为 x.txt）：

interface Eth-Trunk50.1000
interface Eth-Trunk50.1030
interface Eth-Trunk51.2071
interface Eth-Trunk51.2072
interface Eth-Trunk100.108
interface Eth-Trunk100.109
interface Eth-Trunk100.111
interface GigabitEthernet1/1/0
interface GigabitEthernet1/1/1.660
interface GigabitEthernet1/1/1.662
interface GigabitEthernet1/1/2
interface GigabitEthernet1/1/10.3400
interface GigabitEthernet1/1/10.3600
interface GigabitEthernet1/1/10.3800
interface GigabitEthernet2/1/1
interface GigabitEthernet2/1/1.3010

我需要获取 f.txt 文件中不是第一部分或不存在于 x.txt 行中的行以获得如下输出：

interface Eth-Trunk60
interface Eth-Trunk60.2535
interface GigabitEthernet0/0/0
interface GigabitEthernet1/1/4

这是我的 python 代码，但它对我不起作用，所以谢谢你的帮助。

def readB(Devices):
    nums = []
    with open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/'+Devices+'-NO trust upstream default33.txt') as f:
        nums = f.read().split('\n')
        nums = [n.strip() for n in nums if n !='']
    with open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/'+Devices+'-NO trust upstream default55.txt') as x , open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/' + Devices + '-NO trust upstream default66.txt','w') as new :
        for n in nums:
          for line in x :
              if not line.startswith(n) :
                  print (n)
                  new.write(n+'\n')
                  break

readB('10.0.130.13')

Answer 1

从两个文件中读取所有行
删除每行的最后一个'\n'
检查行是否有效，在这里使用valid标志：

初始化valide标志为'True'
如果任何行以检查行开始，标记valid 标记为 'False'
通过 valid 标志过滤行

将结果写入结果文件

def readB(Devices):
    fLines = open('./f.txt').readlines()
    xLines = open('./x.txt').readlines()
    with open('./result.txt', 'w') as new:
        for fLine in fLines:
            fLine = fLine.replace('\n', '')

            valid = True
            for xLine in xLines:
                xLine = xLine.replace('\n', '')
                if xLine.startswith(fLine):
                    valid = False
                    break
            if valid:
                print(fLine)
                new.write(fLine + '\n')


readB('10.0.130.13')

Answer 2

在这种情况下，您需要对文件进行一些预处理

所以像这样：

def readB(Devices):
    new_lines = []
    with open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/'+Devices+'-NO trust upstream default33.txt', "r") as f:
        nums = [n.strip().split(".")[0] for n in f.read().split('\n') if n !='']
    with open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/'+Devices+'-NO trust upstream default55.txt', "r") as x:
        lines = [n.strip().split(".")[0] for n in x.read().split('\n') if n !='']
    
    for n in nums:
        if n not in lines:
            new_lines.append(n)
    
    with open('C:/Users/Ahmed Shouaib/Downloads/Backup Configurtion files/' + Devices + '-NO trust upstream default66.txt','w') as new:
        new.write("\n".join(new_lines))

readB('10.0.130.13')

获取 txt 文件中不是第一部分或不存在于 python 中另一个文件行中的行

Get the lines of txt file which not the first part or not exist in another file's lines in python

python

txt