使用python中的department name和psycopg2显示department ID?

这是我的python代码:

import datetime

import psycopg2.extras
conn = psycopg2.connect(database="emp", user="postgres",
                        password="12345", host="127.0.0.1", 
port="5432")

cur = conn.cursor(cursor_factory = psycopg2.extras.RealDictCursor)

emp_name = str(input("Enter new employee name: "))

while True:
    gender = str(input("Type your gender: "))
    if gender == 'M' or gender == 'F':
        break

hire_date = input("Enter hire date(YYYY-MM-DD): ")
year, month, day = map(int, hire_date.split('-'))
hiredate = datetime.date(year, month, day)

salary = str(int(input("Enter your salary: ")))

deptname = str(input("Enter department name: "))

cur.execute("INSERT INTO employee(emp_name, gender, hire_date, salary,
 deptid) VALUES(%s, %s, %s, %s)",(emp_name, gender,hire_date, salary))

cur.execute("SELECT * FROM employee ORDER BY emp_no DESC LIMIT 1 WHERE 
  deptname = %(deptname)s", {'deptname': deptname})

rows = cur.fetchall()

print( '\n'.join( str( row ) for row in rows ) )

print( "Created successfully!" )
conn.commit()
conn.close()