import pandas as pd
# ImportError: Missing optional dependency 'openpyxl'. 
# Use pip or conda to install openpyxl.

dane = pd.read_excel('/home/adasiek/Nextcloud/05_SZKOLENIA/10_COMARCH/20251215_Python_Nieprogramisci/2025_12_15_python/dzien_05/arkusz.xlsx')

print(dane)
wynik = dane.loc[dane['instrument'] == 'INVCEEFIZ', 'ilosc'].sum()
print(wynik)