5.5 Nested Conditionals and Tracing

Notes

Conditionals can be nested (one inside another), and several separate if statements are all checked, unlike an if/elif chain.

x = 8
if x > 5:
print("A")
if x > 7:
print("B")
else:
print("C")

• This prints A then B, because each if is tested on its own.
• If the second if were changed to elif, only A would print.
• Trace by writing down variable values and checking each condition in order.
• Common mistakes: using = instead of ==, forgetting the colon, and wrong indentation.