Postgres establish connection and delete records

establish Cursor object

cur = conn.cursor()

perform sql command ： Create a new table test

cur.execute(“CREATE TABLE test (id serial PRIMARY KEY, num integer, data varchar);”)

Pass data to formal parameters in the statement , Give Way Psycopg Deal with the correct conversion （ You can avoid sql Inject ）

cur.execute(“INSERT INTO test (num, data) VALUES (%s, %s)”,
… (100, “abc’def”))

Interpolated data , And get the results

cur.execute(“SELECT * FROM test;”)
cur.fetchone()
(1, 100, “abc’def”)

Submit data changes

conn.commit()

close Cursor Object and connection object

cur.close()
conn.close()