def create_user(username, password, email, groupname):
"""Creates a user.
Returns the created user.
:param username: The username of the user.
:param password: The password of the user.
:param email: The email address of the user.
:param groupname: The name of the group to which the user
should belong to.
"""
if groupname == "member":
group = Group.get_member_group()
else:
group = Group.query.filter(getattr(Group, groupname) == True).first()
user = User.create(username=username, password=password, email=email,
primary_group_id=group.id, activated=True)
return user
