正则表达式删除首字母缩略词的句号？

Question

我想从一串文字中删除首字母缩略词的句号，但我也希望o留下常规句点（例如在句子的末尾）。

以下句子：

"The C.I.A. is a department in the U.S. Government."

应该成为

"The CIA is a department in the US Government."

使用Python有一种干净的方法吗？到目前为止，我有两个步骤：

words = "The C.I.A. is a department in the U.S. Government."
words = re.sub(r'([A-Z].[A-Z.]*)\.', r'\1', words)
print words
# The C.I.A is a department in the U.S Government.    
words = re.sub(r'\.([A-Z])', r'\1', words)
print words
# The CIA is a department in the US Government.

Answer 1

可能这个？

>>> re.sub(r'(?<!\w)([A-Z])\.', r'\1', s)
'The CIA is a department in the US Government.'

替换前面带有大写单个字母的单个点，前提是单个字母前面没有\w字符集中的任何内容。后面的标准由否定后瞻断言 - (?<!\w)强制执行。