Python中正则表达式匹配结果不一致。

Question

Python中正则表达式匹配结果不一致。

3

我有一段使用正则表达式打印两个文件中匹配项的代码：

with open('ipCountry_list.txt','r') as csvfile1, open('city.txt', 'r', encoding="utf8" ) as file1:
    with open('unmatch.txt', 'a+') as file2:
        readCS = csv.reader(csvfile1, delimiter=';')
        reader = file1.readlines()
        for row in readCS:
            for line in reader:
                if all(re.findall(fr"\b{word}\b[^ ]", line, re.IGNORECASE) for word in row[:2]):
                    print(str(row) + line)
                    file2.write(str(row) + line)
                    break
                if all(re.findall(fr"\b{word}\b[^ ]", line, re.IGNORECASE) for word in row[:3]):
                    print(str(row) + line)
                    file2.write(str(row) + line)
                    break

输出：

['TH', 'BANGKOK']'TH~10~Bangkok'
['ES', 'VALENCIA']'ES~VC~Valencia'
['US', 'AZ', 'PHOENIX']'US~AZ~Aguila'
['JP', 'KASHIWA']'JP~12~Kashiwa'
[CZ;PRAGUE 4 - aaa]

如果你看到 ['US', 'AZ', 'PHOENIX']'US~AZ~Aguila' 不匹配。

[CZ;PRAGUE 4 - aaa] 应该和 'CZ~10~Prague' 匹配，但是无法匹配。

我不确定我做错了什么，也许是我的正则表达式有问题？

编辑:

ipCountry_list.txt：

    TH;BANGKOK;aaa
    ES;VALENCIA;aaa
    US;AZ;PHOENIX;aaa
    JP;KASHIWA;aaa
    CZ;PRAGUE 4 - aaa;
    ZA;EAST LONDON;aaa
    GB;BRIDGWATER;aaa
    RU;MOSCOW;aaa
    GH;TEMA;aaa

city.txt:

    'TH~10~Bangkok'
    'ES~VC~Valencia'
    'US~AZ~Aguila'
    'US~AZ~Phoenix'
    'JP~12~Kashiwa'
    'GB~ENG~Bridgwater'
    'ZA~EC~East London'
    'RU~MOW~Moscow'
    'GH~AA~Tema'
    'CZ~10~Prague'

- user10676860

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1个回答

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- Splitter · Answer 1

最后，我建议这段代码作为答案：

import csv
import re

with open('ipCountry_list.csv', 'r') as csvfile1, open('city.txt', 'r', encoding="utf8") as file1:
    with open('unmatch.txt', 'a+') as file2:
        readCS = csv.reader(csvfile1, delimiter=';')
        reader = file1.readlines()
        # Fallback for the case when city.txt line
        # has no trailing newline. For example, it
        # can happen for the last line. But in the case
        # when every line has a newline, the code line
        # should be removed.
        reader = tuple(map(lambda line: line.strip('\n') + '\n', reader))
        for row in readCS:
            for line in reader:
                ready_row = row[:3] if len(row) > 3 else row[:2]
                ready_row = [re.sub(r'[ \d-]*aaa(?=$)', '', col)
                             if 'aaa' in col else col
                             for col in ready_row if col]
                if all(re.search(fr"\b{word}\b(?:[^ ]|$)", line,
                       re.IGNORECASE) for word in ready_row):
                    print(str(row) + line, end='')
                    file2.write(str(row) + line)
                    break