"Split" file and comparison with CSV

[buran]

amend my previous example

input_file = 'input_file.txt' # '/path/to/inputfile.txt'

def do_comparison(block):
    # do comparison here
    print(block)
    

with open(input_file) as in_file:
    header = next(in_file)
    block = []
    for line in in_file:
        if block and line.strip() == '/##/':
            do_comparison(block=block)
            block = []
        block.append(line) # eventually use line.strip() to remove trailing new line \n
    do_comparison(block) # that is for the last block

Output:
['/##/\n', '/donnee1/XXXXXXXX\n', '/donnee2/A\n']
['/##/\n', '/donnee1/YYYYY\n', '/donnee2/B\n']