python比较文本文件if else打印

Question

我有以下格式的4个文本文件

你知道吗keycountry.txt文件你知道吗

UK USA Germany

你知道吗国家.txt你知道吗

Brexit - UK
USA UK Relations
France win world cup

你知道吗密钥链接.txt你知道吗

www.abc.com
www.ddd.com
www.eee.com

你知道吗链接.txt你知道吗

www.abc.com
www.eee.com

代码：

import re

keycountryfile = "keycountry.txt"
countryfile = "country.txt"

links = open('links.txt', 'r')
links_data = links.read()
links.close()

keys = open('keylink.txt', 'r')
keys_data = keys.read()
keys.close()

keys_split = keys_data.splitlines()

print('LINKS')
for url in keys_split:
    if url in links_data:
        print(url)
        print("matching")
else:
    print("Not matching")   

keys = set(key.lower() for key in 
    re.findall(r'\w+', open(keycountryfile , "r").readline()))

print("COUNTRY")
with open(countryfile) as f:
    for line in f:
        words = set(word.lower() for word in re.findall(r'\w+', line))
        if keys & words:
            print(line, end='')
            print("matching")
    else:
        print("Not matching")

在代码中print("matching")重复了多次。我知道因为它在循环中，所以它会重复，print("Not matching")在没有匹配项时不会显示。我试着将print语句放入循环的内部和外部，但是我无法纠正这个问题。你知道吗

如果输出匹配，则应如下所示：

LINKS
www.abc.com
www.eee.com
matching

COUNTRY
Brexit-UK
USA UK Relations
matching

如果输出不匹配，则应如下所示：

LINKS
Not matching
COUNTRY
Not matching

怎么办？你知道吗

Answer 1

您可以将结果保存到列表中，并在找到所有匹配项后打印结果。你知道吗

import re

keycountryfile = '''UK USA Germany'''
countryfile = '''Brexit - UK
USA UK Relations
France win world cup'''

links = '''www.abc.com
www.eee.com'''

links_data = links.split()

keys = '''www.abc.com
www.ddd.com
www.eee.com'''
keys_data = keys.split()


keys_split = keys_data

matching_links = []
not_links = []
for url in keys_split:
    if url in links_data:
        matching_links.append(url)
    else:
        not_links.append(url)

keys = set(keycountryfile.split())

matching_country = []
not_country = []
for line in countryfile.split():
    words = set(word.lower() for word in re.findall(r'\w+', line))
    if keys & words:
        matching_country.append(line)
    else:
        not_country.append(line)

print('LINKS')
if matching_links:
    print('\n'.join(matching_links))
    print("matching")

print("COUNTRY")
print()
if matching_country:
    print('\n'.join(matching_country))
    print("matching")

print('LINKS')
if not_links:
    print('\n'.join(not_links))
print("Not matching")

print("COUNTRY")
if not_country:
    print('\n'.join(not_country))
print("Not matching")

你可以试试这个代码here

Answer 2

似乎你的问题一方面与for else结构有关。Else总是在您的代码中执行。你知道吗

此外，基于kaihami的回答，为了实现您所描述的内容，您需要将匹配的链接/行存储在一个单独的结构中，如列表，然后检查该列表是否为空以打印匹配的条目或字符串“Not matching”，下面是我建议的解决方案：

import re

keycountryfile = "keycountry.txt"
countryfile = "country.txt"

with open('links.txt', 'r') as links:
    links_data = [line.strip() for line in links.readlines()]

with open('keylink.txt', 'r') as keys:
    keys_links = set([line.strip() for line in keys.readlines()])


matching_links = []
for url in links_data:
    if url in keys_links:
        matching_links.append(url)

print('LINKS')
if matching_links:
    print('\n'.join(matching_links))
    print("matching")
else:
    print("Not matching") 

print()

with open(keycountryfile , "r") as f:
    country_keys = set(key.lower() for key in 
                       re.findall(r'\w+', f.readline()))

matching_lines = []
with open(countryfile) as f:
    for line in f:
        words = set(word.lower() for word in re.findall(r'\w+', line))
        if country_keys & words:
            matching_lines.append(line.strip())
    print("COUNTRY")
    if matching_lines:
        print('\n'.join(matching_lines))
        print("matching")
    else:            
        print("Not matching")