Psycopg2 to create a record using a FK

[Aaron Christensen]

Hello,

I am running the following versions of software:

Python 3.5
psycopg2==2.6.1
Postgres 9.4.5

I have 2 tables.  Table User has UserId (serial PK), LastName, FirstName,
Gender, DateOfBirth, and DateEnrolled.  Table UserProfile has UserProfileId
(serial, PK), UserId (FK), DateEntered, FaveNumber, and Activity.  There is
a one-to-many relationship.

The following PostgreSQL works and ultimately creates a record in
UserProfile with an associated UserId (FK).

\set last_name '''Sara'''
\set first_name '''Jackson'''
\set gender '''F'''
\set dob '''1941-1-12'''
\set fave_number '''3'''
\set activity '''volleyball'''


WITH ins_user AS (
INSERT INTO User
(LastName, FirstName, Gender, DateOfBirth, DateEnrolled)
VALUES (:last_name, :first_name, :gender, :dob, now())
RETURNING UserId)
INSERT INTO UserProfile
(UserId, DateEntered, FaveNumber, Activity)
VALUES ( (SELECT UserId FROM ins_user), now(), :fave_number :activity);

How can I build a psycopg2 cur.execute query that will accomplish the above
PostgreSQL?  I've read documentation but can't seem to get a handle on how
I should structure this command.

My starting point is:

cur.execute( \
"""INSERT INTO User \
(LastName, FirstName, Gender, DateOfBirth, DateEnrolled) \
VALUES (%s, %s, %s, %s, %s) RETURNING UserId;""", \
(last_name, first_name, gender, date_of_birth, now(), ??...??)


Also, I have a second question.  Is it possible to extract that value
derived from "RETURNING UserId" so that it can be used in a later query?

Thank you for your time!
Aaron