1.
Check if a number is positive, negative, or zero
Input Format: A single integer n
Output Format: "Positive", "Negative", or "Zero"
Constraints: -1000 <= n <= 1000
Test Cases:
o Input: 5 → Output: Positive
o Input: 0 → Output: Zero
o Input: -3 → Output: Negative
2. Check if a number is even or odd
Input Format: A single integer n
Output Format: "Even" or "Odd"
Constraints: -1000 <= n <= 1000
Test Cases:
o Input: 6 → Output: Even
o Input: 7 → Output: Odd
o Input: 0 → Output: Even
3. Check if a person is eligible to vote
Input Format: A single integer age
Output Format: "Eligible" or "Not Eligible"
Constraints: 0 <= age <= 120
Test Cases:
o Input: 20 → Output: Eligible
o Input: 17 → Output: Not Eligible
o Input: 18 → Output: Eligible
4. Find the greatest of two numbers
Input Format: Two space-separated integers a and b
Output Format: The greater number (or either if equal)
Constraints: -1000 <= a, b <= 1000
Test Cases:
o Input: 5 3 → Output: 5
o Input: 2 8 → Output: 8
o Input: 7 7 → Output: 7
5. Check if a year is a leap year
Input Format: A single integer year
Output Format: "Leap Year" or "Not a Leap Year"
Constraints: 1000 <= year <= 3000
Test Cases:
o Input: 2020 → Output: Leap Year
o Input: 1900 → Output: Not a Leap Year
o Input: 2000 → Output: Leap Year
Topic: List
1. Find the sum of all elements in a list
Input Format: A list of integers separated by space
Output Format: Sum of the elements
Constraints: 1 <= length <= 1000, -1000 <= element <=
1000
Test Cases:
o Input: 1 2 3 4 → Output: 10
o Input: -1 -2 5 → Output: 2
o Input: 0 0 0 → Output: 0
2. Find the largest number in a list
Input Format: A list of integers separated by space
Output Format: The maximum value
Test Cases:
o Input: 1 99 3 4 → Output: 99
o Input: -10 -3 -50 → Output: -3
o Input: 5 → Output: 5
3. Count the number of even numbers in a list
Input Format: A list of integers
Output Format: Count of even numbers
Test Cases:
o Input: 1 2 3 4 5 6 → Output: 3
o Input: 7 9 11 → Output: 0
o Input: 0 2 4 6 → Output: 4
4. Print the list in reverse order
Input Format: A list of integers
Output Format: Reversed list, space-separated
Test Cases:
o Input: 1 2 3 → Output: 3 2 1
o Input: 10 20 → Output: 20 10
o Input: 5 → Output: 5
5. Remove duplicates from a list
Input Format: A list of integers
Output Format: Unique elements in the order they
appeared
Test Cases:
o Input: 1 2 2 3 4 4 → Output: 1 2 3 4
o Input: 5 5 5 5 → Output: 5
o Input: 1 2 3 → Output: 1 2 3
Topic: Tuple
1. Access the second element in a tuple
Input Format: A tuple of integers (min 2 elements)
Output Format: Second element
Test Cases:
o Input: (1, 2, 3) → Output: 2
o Input: (10, 20) → Output: 20
o Input: (5, 6, 7, 8) → Output: 6
2. Check if an element exists in a tuple
Input Format: A tuple and an integer to search
Output Format: "Found" or "Not Found"
Test Cases:
o Input: (1, 2, 3) → Output: Found
o Input: (4, 5, 6) → Output: Not Found
o Input: (10,) → Output: Found
3. Find the length of a tuple
Input Format: A tuple
Output Format: Length of the tuple
Test Cases:
o Input: (1, 2, 3) → Output: 3
o Input: (10, 20) → Output: 2
o Input: (5,) → Output: 1
4. Count occurrences of an element in a tuple
Input Format: A tuple and an element to count
Output Format: Count of occurrences
Test Cases:
o Input: (1, 2, 2, 3) → Output: 2
o Input: (4, 4, 4, 4) → Output: 4
o Input: (5, 6, 7) → Output: 0
5. Convert a list to a tuple
Input Format: A list of integers
Output Format: A tuple of integers
Test Cases:
o Input: 1 2 3 → Output: (1, 2, 3)
o Input: 10 20 → Output: (10, 20)
o Input: 5 → Output: (5,)
Topic Set
1. Remove duplicates from a list using a set
Input: 1 2 2 3
Output: 1 2 3
Constraints: 1 <= length <= 1000
More cases:
o Input: 4 4 4 → Output: 4
o Input: 10 20 10 30 → Output: 10 20 30
2. Find the union of two sets
Input:
123
345
Output: 1 2 3 4 5
More cases:
o Input: 1 1 1 2 2 → Output: 1 2
o Input: 10 20 30 40 → Output: 10 20 30 40
3. Find the intersection of two sets
Input:
123
234
Output: 2 3
More cases:
o Input: 5 6
7 8 → Output: (empty)
o Input: 10 20
10 30 Output: 10
4. Check if one set is a subset of another
Input:
12
123
Output: Yes
More cases:
o Input: 4 5\n1 2 3 → Output: No
o Input: 10\n10 20 → Output: Yes
5. Add an element to a set
Input:
123
4
Output: 1 2 3 4
More cases:
o Input: 5 6\n5 → Output: 5 6
o Input: 7 8\n9 → Output: 7 8 9
Dictionary
1. Create a dictionary from keys and values
Input:
abc
123
Output: {'a': 1, 'b': 2, 'c': 3}
More cases:
o Input: x y\n10 20 → Output: {'x': 10, 'y': 20}
o Input: key\n5 → Output: {'key': 5}
2. Find value by key in a dictionary
Input:
a1b2
b
Output: 2
More cases:
o Input: x 10 y 20\nz → Output: Key not found
o Input: k 5\nk → Output: 5
3. Count frequency of words
Input: apple banana apple
Output:
apple: 2
banana: 1
More cases:
o Input: cat cat dog → Output: cat: 2\ndog: 1
o Input: one → Output: one: 1
4. Update a value in a dictionary
Input:
a1b2
a 10
Output: {'a': 10, 'b': 2}
More cases:
o Input: x 5\nx 15 → Output: {'x': 15}
o Input: k 0 l 1\nl 9 → Output: {'k': 0, 'l': 9}
5. Delete a key from dictionary
Input:
a1b2
a
Output: {'b': 2}
More cases:
o Input: x 5 y 6\nz → Output: Key not found
o Input: k 0\nk → Output: {}
For Loops
1. Print all numbers from 1 to N
o Input: 5
o Output: 1 2 3 4 5
o Constraints: 1 <= N <= 100
2. Print square of first N numbers
o Input: 3
o Output: 1 4 9
3. Sum all even numbers from 1 to N
o Input: 10
o Output: 30
4. Count vowels in a string
o Input: banana
o Output: 3
5. Reverse list elements
o Input: 1 2 3
o Output: 3 2 1
Functions
1. Square of a number
o Input: 5
o Output: 25
2. Check if a number is even or odd
o Input: 7
o Output: Odd
3. Factorial of a number
o Input: 5
o Output: 120
4. Find maximum of three numbers
o Input: 10 5 7
o Output: 10
5. Count words in a sentence
o Input: Python is fun
o Output: 3
Error Handling
1. Handle division by zero
o Input: 5 0
o Output: Cannot divide by zero
2. Handle invalid integer input
o Input: hello
o Output: Invalid input
3. Handle missing key in dictionary
o Input:
x 10
y
o Output: Key not found
4. Handle index error in a list
o Input:
10 20
5
o Output: Index out of range
5. Handle file not found
o Input: myfile.txt
o Output: File not found
