删除特定单词后面的所有单词

Question

我想删除特定单词“.c：”之后的所有单词，数字，十六进制数字。

我的界限就是那样 -

line = "Bags has a price.c:123
line = "Bags has a price.c:543ea

我尝试了以下内容：

d = re.sub(r'[.c:\W+]', '', c)

但它没有给出正确的答案，输出将如下：

output: Bags has a price

Answer 1

>>> line = "Bags has a price.c:123"
>>> line.split(':')[0]
'Bags has a price.c'
>>> line.split('.c')[0]
'Bags has a price'

Answer 2

>>> line = "Bags has a price.c:123"
>>> ''.join(line.partition('.c')[:2])
'Bags has a price.c'

Answer 3

如果你必须使用正则表达式 - 显然你没有。你可以做到这一点：

re.sub(r'\.c:.*?$','', line)

如果你可以避免使用正则表达式，那么就做。使用拆分可能要慢得多。

Answer 4

只需使用简单的索引查找。

>>> line = "Bags has a price.c:543ea"
>>> after_word = ".c"
>>> cleaned_line = line[:line.index(after_word) + len(after_word) ]
>>> cleaned_line
Bags has a price.c

要排除.c，请删除+ len(after_word)