One line of Python. Every row labelled automatically. Here’s the if-elif-else breakdown — fast: if score >= 50: Pass else: Fail Need more outcomes? Add elif: if age < 18: Minor elif age < 65: Adult else: Senior Citizen Now in data science — label an entire column: df[‘Result’] = df[‘Score’].apply( lambda x: ‘Pass’ if x >= 50 else ‘Fail’ ) No loop. No manual work. One line. Day 11 · Python for data science. Have you used this in a project yet? #Python #IfElse #Pandas #DataScience LearnPython PythonTips aartii_py DataScienceIndia