from openpyxl import load_workbook,Workbook
wb=load_workbook('Book1.xlsx')
ws1=wb.get_sheet_by_name('Sheet1')
shs=wb.get_sheet_names()
print(type(shs))
# shs is list
for r in range(0,len(shs)):
ws1.cell(row=r+1,column=1).value=shs[r]
wb.save('Book1.xlsx')