获取文本文件中的特定行

Question

[interfaces.ifTable.ifEntry.ifDescr.13],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #3   
[interfaces.ifTable.ifEntry.ifDescr.14],(STRING) XXX Ethernet 1Gb   
4-port 111T Adapter   
[interfaces.ifTable.ifEntry.ifDescr.18],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #4   
[interfaces.ifTable.ifEntry.ifDescr.23],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #2   
[interfaces.ifTable.ifEntry.ifDescr.38],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #2-WFP Native MAC Layer LightWeight Filter-0000 
[interfaces.ifTable.ifEntry.ifDescr.39],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #2-QoS Packet Scheduler-0000   
[interfaces.ifTable.ifEntry.ifDescr.40],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #2-WFP 802.3 MAC Layer LightWeight Filter-0000  
[interfaces.ifTable.ifEntry.ifDescr.41],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #3-WFP Native MAC Layer LightWeight Filter-0000 
[interfaces.ifTable.ifEntry.ifDescr.42],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #3-QoS Packet Scheduler-0000   
[interfaces.ifTable.ifEntry.ifDescr.43],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #3-WFP 802.3 MAC Layer LightWeight Filter-0000  
[interfaces.ifTable.ifEntry.ifDescr.44],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #4-WFP Native MAC Layer LightWeight Filter-0000 
[interfaces.ifTable.ifEntry.ifDescr.45],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #4-QoS Packet Scheduler-0000   
[interfaces.ifTable.ifEntry.ifDescr.46],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter #4-WFP 802.3 MAC Layer LightWeight Filter-0000  
[interfaces.ifTable.ifEntry.ifDescr.47],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter-WFP Native MAC Layer LightWeight Filter-0000   
[interfaces.ifTable.ifEntry.ifDescr.48],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter-QoS Packet Scheduler-0000   
[interfaces.ifTable.ifEntry.ifDescr.49],(STRING),XXX Ethernet 1Gb   
4-port 111T Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000

这是我的控制台结果，如果我只想要这样的结果:

[interfaces.ifTable.ifEntry.ifDescr.13],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #3
[interfaces.ifTable.ifEntry.ifDescr.14],(STRING) XXX Ethernet 1Gb 4-port 111T Adapter
[interfaces.ifTable.ifEntry.ifDescr.18],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #4
[interfaces.ifTable.ifEntry.ifDescr.23],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #2

我该怎么做?谢谢。

我的代码是

import os
def check(file_name, str1):
""" Check if any line in the file contains given string """
# Open the file in read only mode
with open(file_name, 'r',encoding="utf-8",errors="ignore") as read_obj:
# Read all lines in the file one by one
for line in read_obj:
# For each line, check if line contains the string
if str1 in line:
return True
return False
def search(file_name, str2):
"""Search for the given string in file and return lines containing that string,
along with line numbers"""
line_number = 0
list_of_results = []
# Open the file in read only mode
with open(file_name, 'r',encoding="utf-8",errors="ignore") as read_obj:
# Read all lines in the file one by one
for line in read_obj:
# For each line, check if line contains the string
line_number += 1
if str2 in line:
# If yes, then add the line number & line as a tuple in the list
# Return list of tuples containing line numbers and lines where string is found
return list_of_results
def search_multiple(file_name, list_of_strings):
"""Get line from the file along with line numbers, which contains any string from the list"""
line_number = 0
list_of_results = []
# Open the file in read only mode use encoding and erros to block the error String
with open(file_name, 'r',encoding="utf-8",errors="ignore") as read:
# Read all lines in the file one by one
for line in read:
line_number += 1
# For each line, check if line contains any string from the list of strings
for x in list_of_strings:
#Filter unwanted value
if x in line:
# If any string is found in line, then append that line along with line number in list
list_of_results.append((x,line_number,line.rstrip()))
# Return list of tuples containing matched string, line numbers and lines where string is found
return list_of_results
def main():
print('*** Search for a string in file & get all lines containing the string along with line numbers ****')
matched_lines = search('C:mib_informationSNMPINFOsnmpinfo.txt', '366T')
for elem in matched_lines:
print(elem[1])
if __name__ == '__main__':
main()

Answer 1

如果上面提到的(控制台结果)数据在一个文件中(假设是'file.txt')，那么尝试readlines方法，如

print(open('file.txt', 'r').readlines()[:4])

输出:

[
'[interfaces.ifTable.ifEntry.ifDescr.13],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #3',
'[interfaces.ifTable.ifEntry.ifDescr.14],(STRING) XXX Ethernet 1Gb 4-port 111T Adapter',
'[interfaces.ifTable.ifEntry.ifDescr.18],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #4',
'[interfaces.ifTable.ifEntry.ifDescr.23],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #2'
]

如果你想让它像问题中提到的那样显示(比如用换行符分隔)，那么，

print('n'.join(open('file.txt', 'r').readlines()[:4]))

输出:

[interfaces.ifTable.ifEntry.ifDescr.13],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #3
[interfaces.ifTable.ifEntry.ifDescr.14],(STRING) XXX Ethernet 1Gb 4-port 111T Adapter
[interfaces.ifTable.ifEntry.ifDescr.18],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #4
[interfaces.ifTable.ifEntry.ifDescr.23],(STRING),XXX Ethernet 1Gb 4-port 111T Adapter #2

告诉我你是否可以…