Continue with values until the next key from a list while reading lines from a file - python

I have a list of values like this,

names_needed = ['PCC', 'PSP', 'ASP']

Also, I have .txt file I am reading into extract some values based on the above list.

PCC WITH NOTHING
ABB,CAI null V00011 11/06/18
ANDERS,SAND null V000103 07/10/17
KUCHEN,SARA null V00011 03/21/19 

PSP SECONDARY
MUNCH,TORY null V000113 04/08/19 
ACOSTA,AD null V00010 06/19/17 

PCC WITH SOEMTHING
BEC,RUMA null V00011 04/17/19 
BECE,COR null V00010 10/25/16 
TORRE,M null V0001143 06/06/19

ASP HAS IT
XON,ANDREA null V00011 03/27/19

PSP Wanted
NICK,SON null V00011 05/20/19
JUARE,SABIO null V00011 04/02/19

From this text file, I want to read in each line and then check if one of the key values is present and put all data into a list after that key word. Something like this,

PCC:
[ABB,CAI null V00011 11/06/18
ANDERS,SAND null V000103 07/10/17
KUCHEN,SARA null V00011 03/21/19 
BEC,RUMA null V00011 04/17/19 
BECE,COR null V00010 10/25/16 
TORRE,M null V0001143 06/06/19]

PSP:
[MUNCH,TORY null V000113 04/08/19 
ACOSTA,AD null V00010 06/19/17 
NICK,SON null V00011 05/20/19
JUARE,SABIO null V00011 04/02/19]

ASP:
[XON,ANDREA null V00011 03/27/19]

It can be a list of list or it can be a dictionary of values. I tried the following,

names_needed = ['PCC', 'PSP', 'ASP']

## Key word list
key_word_list = []

## Empty list to save all lines
all_lines = []

## Open text file
read_text_file = r'text_file.TXT'

### Open the file
with open(read_text_file) as f:
    # For each line
    for line in f:
        # For each line split by new line and get the 0th index
        each_line = line.split('\n')[0]
        # Strip off white space characters
        stripped_line = each_line.strip()

        # Iterate the list of key values   **** HERE is WHERE I AM ITERATING KEY WORD
        for i in names_needed:
            if i in stripped_line:
                key_word_list.append(i)
                all_lines.append(stripped_line)

            else:
                break

This is not giving me the results I want. I can't seem to get to the lines between current key word and next key word.

Any suggestion would be great.