Pandy czytaj CSV z indeksem
df = pd.read_csv('data.csv',index_col=0)
df.index = [str(x) for x in df.index]
Black Bat
df = pd.read_csv('data.csv',index_col=0)
df.index = [str(x) for x in df.index]
df = pd.read_csv('data.csv')