#!/usr/bin/env python3

def parse_passwd_lines(line: str) -> "Dict of passwd details":
    parts = line.split(':')
    userdict = {
        "gruppenname" : parts[0],
        "password" : parts[1],
        "gid" : parts[2],
        "member" : parts[3]
    }
    return userdict

with open("/etc/group", "r") as groups_data:
     lines = list(map(str.rstrip, groups_data))

result = []
for line in lines:
    result.append(parse_passwd_lines(line))

print(result)


for user in result:
        if user["member"] != "":
        #print("{username:{width}} {realname}".format(width=32 **user))
            print(user["gruppenname"] + "---->" + user["member"] )