if / else
Run a block only when a condition is True; otherwise run the else block.
marks = 75
if marks >= 40:
print("Pass")
else:
print("Fail")elif
elif checks additional conditions in order. The first True branch runs.
x = 0
if x > 0:
print("positive")
elif x < 0:
print("negative")
else:
print("zero")Comparison and logic
Use ==, !=, <, >, <=, >=, and combine with and / or / not.