Task_12_logical_operators.md

Task 12 - Logical operators

and, or, and not combine or invert boolean expressions. Python stops evaluating as soon as the final truth value is known, a behavior called short-circuiting.

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Quick demo

has_passport = True
has_visa = False
is_citizen = False

# Both conditions must be true
if has_passport and has_visa:
    print("Border cleared")        # not printed

# At least one condition is true
if has_passport or is_citizen:
    print("Document accepted")     # printed

# Invert a condition
if not is_citizen:
    print("Non-citizen warning")   # printed

age = 30
# Chained comparison reads naturally
if 18 <= age < 65:
    print("Working-age adult")

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Your exercise

1. Create a file called Task_12.py.

2. Set these variables:

   high_income = False
   good_credit = True
   student = True

3. Write logic that prints "Eligible for loan" only when the applicant has high_income and good_credit and is not a student. Otherwise print "Not eligible".

4. Add a second check that prints "Maybe eligible" when the applicant has either high_income or good_credit, provided they are not a student.

5. Finally, define age as your age and use a chained comparison to print "Within target age range" when age is between 18 and 65 inclusive.

Run the script and toggle the boolean variables to see how each logical operator affects the outcome.