Python Homework (Day 1 → Day 3)

Day 1 — Basics (print, input, variables)

1) Greeting Program

Ask the user their name and print: Hello, <name>!

Hint: Use input() and print().

name = input("Enter your name: ")
print("Hello, " + name + "!")

2) Student Introduction App

Take name, age, school, favourite game and print one sentence introducing the student.

Hint: Use input(). Convert age to string with str() if concatenating.

name = input("Name: ")
age = input("Age: ")
school = input("School: ")
game = input("Favourite game: ")
print(name + ", age " + age + ", studies at " + school + " and likes " + game + ".")

3) Simple Calculator

Input two numbers and print sum, difference, product and quotient.

Hint: Convert inputs to float() before arithmetic.

a = float(input("Number 1: "))
b = float(input("Number 2: "))
print("Sum:", a + b)
print("Difference:", a - b)
print("Product:", a * b)
if b != 0:
    print("Quotient:", a / b)
else:
    print("Cannot divide by zero")

4) Area of Rectangle

Input length and width and print area.

Hint: Area = length × width; use float().

length = float(input("Length: "))
width = float(input("Width: "))
area = length * width
print("Area:", area)

5) Swap Two Numbers (no third variable)

Swap values of a and b without a temporary variable.

Hint: Use tuple swap: a, b = b, a.

a = input("a: ")
b = input("b: ")
a, b = b, a
print("After swap: a =", a, "b =", b)

6) Emoji Mood Detector

Ask mood (happy/sad/angry) and print a matching emoji/message.

Hint: Use if/elif/else and normalize input with .lower().

mood = input("How are you feeling? ").lower()
if mood == "happy":
    print("😄 Stay happy!")
elif mood == "sad":
    print("😢 It's okay — tomorrow will be better.")
elif mood == "angry":
    print("😡 Take a deep breath.")
else:
    print("🙂 Thanks for sharing!")

7) Celsius → Fahrenheit

Convert Celsius to Fahrenheit: F = C × 9/5 + 32.

Hint: Use float() for decimals.

c = float(input("Celsius: "))
f = c * 9/5 + 32
print("Fahrenheit:", f)

8) Add Two Numbers

Read two numbers and print their sum.

Hint: Convert to int() or float().

x = int(input("a: "))
y = int(input("b: "))
print("Sum:", x + y)

9) "About Me" Formatter

Create a short About Me using multiple print() lines.

Hint: Use newline \n or multiple prints.

print("About Me\nName: Asha\nHobby: Drawing\nGoal: Learn Python")

10) Simple Interest Calculator

Compute SI = P * R * T / 100.

Hint: Rate R is percent (e.g., 5 → 5%). Use float().

P = float(input("Principal (P): "))
R = float(input("Rate % (R): "))
T = float(input("Time years (T): "))
SI = P * R * T / 100
print("Simple Interest:", SI)

Day 2 — Types, Casting & Operators

11) Convert String to Int and Add

Take a number as string, convert to int, add 10 and print.

Hint: Use int().

s = input("Enter a number as text: ")
n = int(s)
print("Result:", n + 10)

12) Even or Odd Checker

Input a number and print "Even" or "Odd".

Hint: Use % 2.

n = int(input("Number: "))
if n % 2 == 0:
    print("Even")
else:
    print("Odd")

13) Temperature Converter (C ↔ F)

Let the user choose direction and perform conversion.

Hint: Provide a menu option like '1' or '2' and use float().

choice = input("Type '1' for C->F or '2' for F->C: ")
if choice == "1":
    c = float(input("Celsius: "))
    print("F:", c * 9/5 + 32)
else:
    f = float(input("Fahrenheit: "))
    print("C:", (f - 32) * 5/9)

14) Marks Calculator

Input 3 marks and compute total and average.

Hint: Use float() and divide by 3.

m1 = float(input("Mark 1: "))
m2 = float(input("Mark 2: "))
m3 = float(input("Mark 3: "))
total = m1 + m2 + m3
avg = total / 3
print("Total:", total)
print("Average:", avg)

15) Salary Calculator (HRA & TA)

Compute HRA = 10% and TA = 5% on basic salary and show total.

Hint: hra = basic * 0.10, ta = basic * 0.05.

basic = float(input("Basic salary: "))
hra = basic * 0.10
ta = basic * 0.05
total = basic + hra + ta
print("Total salary:", total)

16) Compound Interest

Compute A = P * (1 + r/100) ** t.

Hint: Use ** for power.

P = float(input("P: "))
r = float(input("r (%): "))
t = float(input("t (years): "))
A = P * (1 + r/100) ** t
print("Amount:", A)

17) Distance Converter (km → m → cm)

Convert kilometers to meters and centimeters.

Hint: 1 km = 1000 m; 1 m = 100 cm.

km = float(input("Kilometers: "))
m = km * 1000
cm = m * 100
print(km, "km =", m, "m =", cm, "cm")

18) Remainder Finder (%)

Input two numbers and print the remainder (a % b).

Hint: Validate divisor ≠ 0.

a = int(input("a: "))
b = int(input("b: "))
if b != 0:
    print("Remainder:", a % b)
else:
    print("Cannot divide by zero")

19) Floor Division (//)

Show a // b for two integers.

Hint: Floor division returns integer quotient.

a = int(input("a: "))
b = int(input("b: "))
print("Floor division (a//b):", a // b)

20) Convert Float to Int

Input a float and convert to int (truncates).

Hint: int(5.99) → 5.

f = float(input("Float: "))
print("As int:", int(f))

21) Type Identification

Input anything and print its type using type().

Hint: Raw input() returns string — show conversion example optionally.

v = input("Enter something: ")
print("Type (raw input):", type(v))
# Try convert to int
try:
    vi = int(v)
    print("Also int:", type(vi))
except:
    print("Not an integer")

22) Concatenate Strings with +

Take two words and print them joined using + and comma in print().

Hint: Use a + " " + b for concatenation.

a = input("Word 1: ")
b = input("Word 2: ")
print("Concatenated:", a + " " + b)
print("Print with comma:", a, b)

Day 3 — Decision Making (if / elif / else / logic)

23) Pass / Fail Checker

Input marks and print "Pass" if marks ≥ 35, else "Fail".

Hint: Cast to float() and use if/else.

marks = float(input("Marks: "))
if marks >= 35:
    print("Pass")
else:
    print("Fail")

24) Even / Odd with if-else

Input a number and print whether it's even or odd.

Hint: Use remainder operator %.

n = int(input("Number: "))
if n % 2 == 0:
    print("Even")
else:
    print("Odd")

25) Age Category

Classify age: ≤12 Child, 13–19 Teen, 20–59 Adult, 60+ Senior.

Hint: Use if/elif/else and check ranges top-to-bottom.

age = int(input("Age: "))
if age <= 12:
    print("Child")
elif age <= 19:
    print("Teen")
elif age <= 59:
    print("Adult")
else:
    print("Senior")

26) Maximum of Two Numbers

Input two numbers and print the larger one.

Hint: Use if a > b or built-in max().

a = float(input("a: "))
b = float(input("b: "))
if a >= b:
    print("Max:", a)
else:
    print("Max:", b)

27) Positive / Negative / Zero

Input a number and print whether it is positive, negative or zero.

Hint: Check for zero first (if n == 0).

n = float(input("Number: "))
if n == 0:
    print("Zero")
elif n > 0:
    print("Positive")
else:
    print("Negative")

28) Login Simulation

Ask for username & password and validate against stored values.

Hint: Compare both strings with and.

user = input("Username: ")
pwd = input("Password: ")
if user == "admin" and pwd == "1234":
    print("Login Successful")
else:
    print("Invalid Credentials")

29) Weather Notifier

Ask if it is raining (yes/no) and advise to carry umbrella or not.

Hint: Normalize input: ans.lower().

ans = input("Is it raining? (yes/no): ").lower()
if ans == "yes":
    print("Carry an umbrella!")
else:
    print("No umbrella needed.")

30) Divisible by 5 and 11

Check whether a number is divisible by both 5 and 11.

Hint: Use and with modulus.

n = int(input("Number: "))
if n % 5 == 0 and n % 11 == 0:
    print("Divisible by both 5 and 11")
else:
    print("Not divisible by both")

31) Grade Calculator

Marks → grade using elif ladder: 90+ A, 80+ B, 70+ C, 60+ D, else Fail.

Hint: Check from highest to lowest using elif.

m = float(input("Marks: "))
if m >= 90:
    print("A")
elif m >= 80:
    print("B")
elif m >= 70:
    print("C")
elif m >= 60:
    print("D")
else:
    print("Fail")

32) Voting Eligibility (Nested if)

Ask age and citizenship (yes/no); eligible if age ≥ 18 and citizen yes.

Hint: Use nested if or combine conditions with and.

age = int(input("Age: "))
cit = input("Are you a citizen? (yes/no): ").lower()
if age >= 18:
    if cit == "yes":
        print("Eligible to vote")
    else:
        print("Not eligible — not a citizen")
else:
    print("Too young to vote")

33) Traffic Light

Input color (red/yellow/green) and print action (stop/slow/go).

Hint: Use .lower() and if/elif/else.

color = input("Light color: ").lower()
if color == "red":
    print("Stop")
elif color == "yellow":
    print("Slow down")
elif color == "green":
    print("Go")
else:
    print("Invalid color")

34) ATM PIN Checker

Ask for PIN and verify (single attempt).

Hint: Treat PIN as string to preserve leading zeros.

pin = input("Enter PIN: ")
if pin == "1234":
    print("PIN correct")
else:
    print("Incorrect PIN")

35) Number in Range Checker

Check if number is between 1 and 100 inclusive.

Hint: Use chained comparison 1 <= n <= 100.

n = int(input("Number: "))
if 1 <= n <= 100:
    print("In range")
else:
    print("Out of range")

36) Discount Calculator

If bill ≥ 1000 apply 20% discount otherwise no discount. Print final amount.

Hint: final = bill * 0.8 for 20% off.

bill = float(input("Bill amount: "))
if bill >= 1000:
    final = bill * 0.8
else:
    final = bill
print("Final amount:", final)

37) Scholarship Eligibility

Marks ≥ 85 AND income ≤ 8 → scholarship; elif marks ≥ 60 → admission; else not eligible.

Hint: Use and to combine conditions.

marks = float(input("Marks: "))
income = float(input("Family income (lakhs): "))
if marks >= 85 and income <= 8:
    print("Scholarship eligible")
elif marks >= 60:
    print("Eligible for admission")
else:
    print("Not eligible")

Bonus / Advanced (Optional)

38) Leap Year Checker

Check if a year is leap: divisible by 4 and not by 100 unless divisible by 400.

Hint: Use nested or combined conditions with and/or.

y = int(input("Year: "))
if (y % 400 == 0) or (y % 4 == 0 and y % 100 != 0):
    print("Leap year")
else:
    print("Not leap year")

39) Password Strength Simple Checker

Check if password length ≥ 8 and contains at least one digit.

Hint: Use any(ch.isdigit() for ch in pwd).

pwd = input("Password: ")
has_digit = any(ch.isdigit() for ch in pwd)
if len(pwd) >= 8 and has_digit:
    print("Strong")
else:
    print("Weak")

40) Guess Number (Simple)

Hard-code a secret number and tell if guess is high/low/correct (no loop).

Hint: Use if/elif/else and compare integers.

secret = 7
guess = int(input("Guess the number (1-10): "))
if guess == secret:
    print("Correct!")
elif guess > secret:
    print("Too high")
else:
    print("Too low")

41) Electricity Bill Slabs

Compute bill with simple slabs (e.g., first 100 units @₹1, next units @₹2).

Hint: Use if/elif and subtract slab units when computing progressive charges.

units = int(input("Units consumed: "))
if units <= 100:
    bill = units * 1
else:
    bill = 100*1 + (units-100)*2
print("Bill:", bill)

42) Compare Three Numbers

Input three numbers and print the largest using if (no max()).

Hint: Compare pairwise: first compare a & b then compare winner with c.

a = float(input("a: "))
b = float(input("b: "))
c = float(input("c: "))
if a >= b and a >= c:
    print("Largest is", a)
elif b >= a and b >= c:
    print("Largest is", b)
else:
    print("Largest is", c)

Teacher Notes:

• Ask students to type code (not copy-paste) at least once — typing builds confidence.
• Encourage changing inputs to see edge cases (zero, negative, large numbers).
• For extra practice, have students add comments explaining each line using #.
• To convert this into a Colab notebook, copy each code block into a new cell and run.