[英]how to compare lines in two files are same or different in python
我有两个文件,其中包含以下几行:
file1:
6.959999999: LOG_MOD_L0_RECEIVE_TXBRP_CONTROL(0,
0x0059005f,
0x0049006d,
0x00b9008b,
0x001300b9)
7.959999999: LOG_MOD_L0_RECEIVE_TXBRP_Measure(1,
0x0059005m,
0x0049006d,
0x04b9008b,
0x001300b9)
file2:
6.959999999: 01_LOG_MOD_L0_RECEIVE_TXBRP_CONTROL(0,
0x0059005f,
0x0049006d,
0x00b9008b,
0x001300b9)
7.959999999: LOG_MOD_L0_RECEIVE_TXBRP_Measure(1,
0x0059005m,
0x0049006d,
0x04b9008b,
0x001300b9)
在这种情况下,如果我为文件2输入文件1的输入字符串为“ LOG_MOD_L0_RECEIVE_TXBRP_CONTROL”和“ 01_LOG_MOD_L0_RECEIVE_TXBRP_CONTROL”,我想检查其中存在的数据是否相同。我的意思是我必须检查
(0,
0x0059005f,
0x0049006d,
0x00b9008b,
0x001300b9)
这个数据和
(0,
0x0059005f,
0x0049006d,
0x00b9008b,
0x001300b9)
该数据是否相同。
我的代码是:
file1=open("C:\\Python27\\output1.txt","r")
file2=open("C:\\Python27\\output2.txt","r")
lines1=file1.readlines()
lines2=file2.readlines()
output1_string=raw_input("Enter the String of file1:")
output2_string=raw_input("Enter the String of file2:")
for line1 in lines1:
for line2 in lines2:
if line1==line2:
print "both are same"
else:
print "Different"
两个问题:
output1_string=raw_input("Enter the String of file1:")
output2_string=raw_input("Enter the String of file2:")
从未使用过,似乎毫无意义,但最重要的是:
same = set(file1).intersection(file2)
您需要在某处读取文件的内容以进行比较,并且需要比较两个集合而不是一个文件集合。
还有一个python库为您执行此操作-查看difflib 。
#!/usr/bin/env python3
import re
lines1=open("output1.txt","rt").read()
lines2=open("output2.txt","rt").read()
hits1 = re.findall(r'\(.*?\)', lines1, re.DOTALL)
hits2 = re.findall(r'\(.*?\)', lines2, re.DOTALL)
print('equal:', set(hits1).intersection(hits2))
print('diff: ', set(hits1).difference(hits2))
打印输出
equal: {'(0, \n 0x0059005f, \n 0x0049006d, \n 0x00b9008b, \n 0x001300b9)', '(1, \n 0x0059005m, \n 0x0049006d, \n 0x04b9008b, \n 0x001300b9)'}
diff: set()
首先,您需要解决找到正确的匹配部分的问题。 以下生成器函数将生成您要查找的部分信息:
def find_sections(filename, text):
with open(filename) as fin:
section = None
for line in fin:
if text in line:
section = line.rpartition('(')[-2:]
try:
while ')' not in line:
line = next(fin)
section.append(line)
except StopIteration:
pass # ran out of file to read
yield ''.join(section)
else:
previous = line
要测试两个文件中是否存在相同的数据,请先读取一个并收集一组数据:
output1_string=raw_input("Enter the String of file1:")
sections1 = set(find_sections("C:\\Python27\\output1.txt", output1_string))
现在,您可以通过设置交集在另一个文件中找到匹配的条目:
output2_string=raw_input("Enter the String of file2:")
sections2 = find_sections("C:\\Python27\\output2.txt", output1_string)
for match in sections1.intersection(sections2):
print 'Found a match:'
print match
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