import re
regex = r"\(([^,(]+)"
data = "[(net, asset), (amount, asset), (connect, asset), (net, asset), (check, asset), (service, asset), (adapt, asset)] | [(part, asset)]"
print(re.findall(regex, data))
aW1wb3J0IHJlCgpyZWdleCA9IHIiXCgoW14sKF0rKSIKZGF0YSA9ICJbKG5ldCwgYXNzZXQpLCAoYW1vdW50LCBhc3NldCksIChjb25uZWN0LCBhc3NldCksIChuZXQsIGFzc2V0KSwgKGNoZWNrLCBhc3NldCksIChzZXJ2aWNlLCBhc3NldCksIChhZGFwdCwgYXNzZXQpXSB8IFsocGFydCwgYXNzZXQpXSIKCnByaW50KHJlLmZpbmRhbGwocmVnZXgsIGRhdGEpKQ==