python3 pandas - write (append) to excel file.py

import pandas as pd
import openpyxl


# maybe in loop
for i in data:                          # let i == [a, b]
    df = pd.DataFrame(
	[[a, b]],
	columns=['Title1', 'Title2']
    )

    with pd.ExcelWriter(
	"title.xlsx", 
	mode="a",                    # append instead of making new each time 
	engine="openpyxl", 
	if_sheet_exists="overlay"    # idk
    ) as writer:
	df.to_excel(
    	    writer, 
	    sheet_name="new_sheet_name",
	    header=None, 
	    startrow=writer.sheets["new_sheet_name"].max_row,
	    index=False
        )