Python Regex在点后添加空间

Question

How can I use re to write a regex in Python that finds the pattern:

dot "." followed directly by any char [a-zA-Z] (not space or digit)

and then add a space between the dot and the char?

ie

str="Thanks.Bob"
newsttr="Thanks. Bob"

Thanks in advance, Zvi

Answer 1

re.sub(r'\\.([a-zA-Z])', r'. \\1', oldstr)

Answer 2

re.sub('(?<=\.)(?=[a-zA-Z])', ' ', str)

Answer 3

尝试

re.sub(r"\.([a-zA-Z])", ". \\1", "Thanks.Bob")