def write_file()

in gen.py [0:0]
27 lines of code
12 McCabe index (conditional complexity)

    def write_file(self, t_lines, output):
        print(f'WRITE_FILE: writing to "{output}"')

        new_z = [ ]
        for line in t_lines:
            if line.startswith(':readonly:'):
                # FORMAT:
                #   :readonly:/some/random/path
                #   :readonly:/root/path/(alt1|alt2|alt3)
                if '(' in line:
                    root, rest = line[10:].split('(')
                    subdirs = [ root+p for p in rest[:-1].split('|') ]
                else:
                    subdirs = [ line[10:] ]
                for s in subdirs:
                    new_z.append(f'[{s}]\n* = r')
            elif line.startswith('LDAP'):
                # Define a group using LDAP information.
                # Line format:
                # LDAP(+PMC): $TLPNAME
                ### NOTE: we place this authz at this specific point in
                ### the authz file, and do "group" and "group-pmc" in this
                ### order to maintain backwards-compat identical generation
                ### of the file. In the future, simplification will be
                ### possible once we decide to trust a major change in
                ### the authz files.
                group = line.split(':')[1].strip()
                members = self.group_members(group)
                new_z.append(f'{group}={",".join(members)}')
                if line.startswith('LDAP+PMC'):
                    members = self.group_members(group + '-pmc')
                    new_z.append(f'{group}-pmc={",".join(members)}')
            elif line.startswith('#') or '={' not in line:
                new_z.append(line)
            else:
                # Only GROUP={auth} is allowed here.
                assert '={auth}' in line
                group = line.split('=')[0]
                ### Place this specific auth, at this point in the authz file.
                ### This is temporary, as we manage this forward.
                members = self.group_members(group)
                new_z.append(f'{group}={",".join(members)}')

        atomic_write(output, '\n'.join(new_z) + '\n')