A class for quickly connecting to your Oracle databases and writing SQL queries that return pandas DataFrames. Just update the class variables called prod_dsn and test_dsn with your connection parameters (I use tnsnames). All the details are in the docstrings.
import OracleDBConn
conn = OracleDBConn(env='test', user='jscott', config_dir='C:/user/tnsnames')
df = conn.query_to_df("select org_unit_no, org_unit_code from org_unit")
print(df)