How do I pass a pandas dataframe to a PLSQL procedure as a parameter using cx_Oracle - pandas

Question

I need to pass the pandas dataframe to the plsql procedure as sysrefcursor type input. I tried the below code but I get an error.
import cx_Oracle
import pandas as pd
import numpy as np
# create a Pandas DataFrame
df = pd.DataFrame({'column1': [1, 2, 3], 'column2': ['a', 'b', 'c']})
# establish a connection to Oracle
dsn_tns = cx_Oracle.makedsn('hostname', '1521', service_name='servicename') # if needed, place an 'r' before any parameter in order to address special characters such as '\'.
conn = cx_Oracle.connect(user=r'username', password='password', dsn=dsn_tns) # if needed, place an 'r' before any parameter in order to address special characters such as '\'. For example, if your user name contains '\', you'll need to place 'r' before the user name: user=r'User Name'
cur = conn.cursor()
cur.execute("""
CREATE OR REPLACE PROCEDURE my_proc (
p_data IN SYS_REFCURSOR
) AS
BEGIN
null;
END;
""")
cur.callproc('my_proc', df)
conn.commit()
cur.close()
conn.close()
I get an error NotSupportedError: Python value of type DataFrame not supported.
So if this is not supported. How do I pass the dataframe to the Oracle Procedure?
I tried to save the pandas dataframe to some temp table using
df.to_sql('my_temp_table', con=conn, index=False, if_exists="replace")
so that i can just call the procedure and use this table inside the proc.
But looks like i have to pass sqlalchemy connection to to_sql and not cx_Oracle's
Any help is greatly appreciated!