Search some character getting column and row:
for row in df_ExportFeuil1.index: for col in df_ExportFeuil1.columns: cell_value = str(df_ExportFeuil1.at[row, col]) if '\u2264' in cell_value: print(colored(f'Attention, signe inférieur ou égal à la ligne {row}, colonne {col} !', 'red'))