This Nested If lesson is for a beginner. Read the short notes, run each example, then change one name or number and run it again.
An if inside another if runs only when both tests are true. Each level is indented one step further.
When the inner block has no else of its own, one if with and is usually easier to read.
Example 1: Start here
The inner test is not even considered when the outer test fails.
score = 82 # a whole number
city = "Chennai" # text
if score >= 70: # run the indented lines only when this is true
if city == "Chennai": # run the indented lines only when this is true
print("shortlisted")
Example 2: A test inside a test
The inner if runs only when the outer if is true.
score = 82 # a whole number
submitted = True # True or False, not text
if submitted: # run the indented lines only when this is true
if score >= 80: # run the indented lines only when this is true
print("Accepted")
Example 3: Flatten it with and
and is easier to read when both tests are simple.
score = 82 # a whole number
submitted = True # True or False, not text
if submitted and score >= 80: # run the indented lines only when this is true
print("Accepted")
Example 4: An else on the inner test
The else belongs to the inner if because it is indented at that level.
score = 70 # a whole number
submitted = True # True or False, not text
if submitted: # run the indented lines only when this is true
if score >= 80: # run the indented lines only when this is true
print("Accepted")
else: # runs when the test above was false
print("Revise")
The inner test is not even considered when the outer test fails.
