[Python] Parse a string, leaving special characters at the end of the word [closed]

My task:

I would like to correctly parse the string by any special characters and spaces. In my further examples, for simplicity, the special characters will be a colon ) and a period (.) , but in general I can come across any special characters.

Initial data:

initial_string_1 = "Date: 01/12/2024"

initial_string_2 = "Batch No.159"

initial_string_3 = "TRAILER REF. NO.: ADB456RED"

Please note that in initial_string_2 no space between the special character and the number.

Desire result:

I would like to separate words and meanings into lines

desire_list_1 = ['Date:', '01/12/2024']

desire_list_2 = ['Batch No.', '159']

desire_list_3 = ['TRAILER REF. NO.:', 'ADB456RED']

What I have at the moment:

I made a regular expression

re.split(r'(?<=[:.])', initial_string)


and I get the following result

result_list_1 = ['Date:', ' 01/12/2024']

result_list_2 = ['Batch No.', '159']

result_list_3 = ['TRAILER REF.', ' NO.', ':', ' ADB456RED']

However, as you can see, the actual results are far from expected:

1. In the first and third cases, spaces remain at the beginning of the line
2. Second case is correct
3. In the third case I would like it to 'TRAILER REF. NO.:' be one line

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