Question

如何将此循环的输出转换为此格式的字符串？

ABCDEF，BCDEFG，CDEFGH，DEFGHI

urls.txt：

fileHandle = open( 'urls.txt', 'r' )
raw_URLS = fileHandle.readlines()

for items in raw_URLS:
    print(items[26:32])

fileHandle.close()

Answer 1

您可以在列表理解中使用str.join：

data = ','.join([item[26:32] for item in open( 'urls.txt', 'r' )])

Answer 2

您可以创建一个变量来在循环之前存储字符串，然后迭代连接字符串的循环。

您的代码看起来像这样：

string_you_want = ''
fileHandle = open( 'urls.txt', 'r' )
raw_URLS = fileHandle.readlines()

for items in raw_URLS:
    string_you_want = string_you_want + items[26:32] + ','
    print(items[26:32])

fileHandle.close()

Answer 3

试试这个：

f=open("urls.txt")
for line in f:
    print (line[26:32])

Answer 4

如果您的网址格式相同，请尝试：

import re
result=[]
pattern=r'[A-Z]+'
with open('new_file.txt','r') as f:
    for line in f:
        if re.search(pattern,line):
            result.append(re.search(pattern,line).group())

print(result)

输出：

['ABCDEF', 'BCDEFG', 'CDEFGH', 'DEFGHI']

将循环输出转换为字符串

4 个答案: