source.py

in_str = input()
macros = []
macro = {}
macro_started = False
trim_str = in_str.strip()
while trim_str != 'end':
    list_of_commands = list(filter(None, in_str.split(' ')))
    if 'macro' in list_of_commands:
        macro['lines'] = [in_str]
        macro_started = True
        args = list_of_commands[-1].split(',')
        macro['name'] = list_of_commands[0]
        macro['num_of_arg'] = len(args)
        macro['args'] = {}
        for i in range(0, len(args)):
            macro['args'][args[i]] = '#' + str(i)
    if macro_started and 'macro' not in list_of_commands:
        for arg in macro['args']:
            in_str = in_str.replace(arg, macro['args'][arg])
        macro['lines'].append(in_str)
    if 'endm' in list_of_commands:
        macro_started = False
        for line in macro['lines']:
            print(line)
        macros.append(macro)
        macro = {}
    in_str = input()
    trim_str = in_str.strip()
    if(trim_str=='end'):
        break