def main(file_path, X, Y, V, saveAs, convertor):
file_path = Path(file_path)
sheets = pd.read_excel(file_path, sheet_name=None, engine='openpyxl')
sheet_names = []
for sheet in sheets.keys():
sheet_names.append(sheet)
# Using sheet 1 as the default sheet.
sheet_name = sheet_names[0]
df = sheets[sheet_name]
sheet = Sheet(sheet_name=sheet_name, df=df)
sheet.save_cols(X=X, Y=Y, V=V)
if convertor == "convertor_1":
new_sheet = sheet.convertor1()
sheet.save_excel(new_sheet, f"{saveAs}")
elif convertor == "convertor_2":
new_sheet = sheet.convertor2()
sheet.save_excel(new_sheet, f"{saveAs}")
elif convertor == "convertor_3":
new_sheet = sheet.convertor3()
sheet.save_excel(new_sheet, f"{saveAs}")
elif convertor == "convertor_4":
new_sheet = sheet.convertor4()
sheet.save_excel(new_sheet, f"{saveAs}")
else:
raise Exception(f"Invalid convertor name: '{convertor}'.")
