import pandas as pd
df_acer = pd.read_excel('prices.xlsx', sheet_name='Acer')
df_asus = pd.read_excel('prices.xlsx', sheet_name='Asus')
df_hp = pd.read_excel('prices.xlsx', sheet_name='HP')
df = pd.concat([df_acer, df_asus, df_hp], ignore_index=True)
df
df.sort_values(by='price', ascending=False, inplace=True)
df
df.to_excel('all_prices.xlsx', sheet_name='Notebooks', index=False)
f = pd.ExcelFile('prices.xlsx')
f
res = pd.DataFrame()
for name in f.sheet_names:
# print(name)
tmp = pd.read_excel('prices.xlsx', sheet_name=name)
res = pd.concat([res, tmp])
res