Using regular expressions to modify a string

Question

How can I use regular expressions to change this string

':: 1:62 2:31 :: 3:4 4:32'

to:

':: 1:62.0 2:31.0 :: 3:4.0 4:32.0'

Is there any clean way to do it without using re.split ?

Answer 1

>>> re.sub("([0-9]+:[0-9]+)", "\\1.0", ':: 1:62 2:31 :: 3:4 4:32')
':: 1:62.0 2:31.0 :: 3:4.0 4:32.0'

Is that adequate?

Answer 2

>>> re.sub(r'(\d)( |$)', r'\1.0\2', ':: 1:62 2:31 :: 3:4 4:32')
':: 1:62.0 2:31.0 :: 3:4.0 4:32.0'