How to access psycopg2 error wrapped in sqlalchemy error

Question

I\'m uploading a pandas data frame to a table in Postgres using SQLalchemy and psycopg2. How do I access the psycopg2 error that is within the SQLalchemy error?

I wa

Answer 1

Here is my final code for reference:

try:
    df.to_sql(name='sql_table', con=engine, if_exists='append', index=False)
except exc.DBAPIError as ex:
    if ex.orig.pgcode == '23502':
        print("Data could not be uploaded to sql_table: " + ex.orig.diag.message_primary)
    else:
        raise