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SD Jain College FYBCA (SEM-2)

204 - Programming Skills Using Python

Practical Journal Programs

Program 1: Mathematical Operations on Two Numbers

a = float(input("Enter first number: "))
b = float(input("Enter second number: "))

print("Addition:", a + b)
print("Subtraction:", a - b)
print("Multiplication:", a * b)

if b != 0:
    print("Division:", a / b)
    print("Modulus:", a % b)
else:
    print("Division: Not possible (division by zero)")
    print("Modulus: Not possible (division by zero)")

Program 2: Dictionary Operations with Roll Numbers

students = {101: "Aarav", 102: "Diya", 103: "Krish"}

students[104] = "Mira"
print("Using get() for roll 102:", students.get(102))

removed_value = students.pop(101)
print("Removed:", removed_value)

print("Final dictionary:", students)

Program 3: Sum of Positive Numbers Until 0

total = 0

while True:
    n = int(input("Enter number (0 to stop): "))
    if n == 0:
        break
    if n < 0:
        continue
    total += n

print("Sum of positive numbers:", total)

Program 4: NumPy Array Addition and Mean

import numpy as np

arr1 = np.array([10, 20, 30, 40, 50])
arr2 = np.array([1, 2, 3, 4, 5])

result = arr1 + arr2
mean_value = np.mean(result)

print("Array 1:", arr1)
print("Array 2:", arr2)
print("Addition:", result)
print("Mean of result:", mean_value)

Program 5: Find Length of List Without len()

def find_length(items):
    count = 0
    for _ in items:
        count += 1
    return count

data = [5, 10, 15, 20, 25]
print("List:", data)
print("Length:", find_length(data))

Program 6: Nested Dictionary Access

student = {
    "roll_no": 201,
    "name": "Riya",
    "marks": {
        "python": 88,
        "sql": 81
    }
}

print("Python marks:", student["marks"]["python"])

Program 7: Character Type Counter in Sentence

text = input("Enter a sentence: ")

upper_count = 0
lower_count = 0
digit_count = 0
space_count = 0
special_count = 0

for ch in text:
    if ch.isupper():
        upper_count += 1
    elif ch.islower():
        lower_count += 1
    elif ch.isdigit():
        digit_count += 1
    elif ch.isspace():
        space_count += 1
    else:
        special_count += 1

print("Uppercase:", upper_count)
print("Lowercase:", lower_count)
print("Digits:", digit_count)
print("Spaces:", space_count)
print("Special Characters:", special_count)

Program 8: Largest Number in NumPy Array

import numpy as np

arr = np.array([12, 45, 7, 89, 34, 90, 56])
print("Array:", arr)
print("Largest number:", np.max(arr))

Program 9: CSV Reader - Employee Data Analysis

Create employee_data.csv:

EmployeeID,Name,Department,Salary
1,Amit,Engineering,50000
2,Neha,HR,42000
3,Rahul,Engineering,60000
4,Pooja,Finance,45000
5,Karan,Engineering,55000

Python script:

import csv

total_salary = 0
eng_salary_total = 0
eng_count = 0

with open("employee_data.csv", "r", newline="") as file:
    reader = csv.reader(file)
    header = next(reader)

    for row in reader:
        employee_id, name, department, salary = row
        salary = float(salary)

        print(f"Name: {name}, Salary: {salary}")
        total_salary += salary

        if department.strip().lower() == "engineering":
            eng_salary_total += salary
            eng_count += 1

print("Total salary of all employees:", total_salary)

if eng_count > 0:
    print("Average Engineering salary:", eng_salary_total / eng_count)
else:
    print("Average Engineering salary: No Engineering employees")

Program 10: Union and Intersection of Tuple Sets

set1 = {(1, 2), (3, 4), (5, 6)}
set2 = {(3, 4), (7, 8), (9, 10)}

union_result = set1.union(set2)
intersection_result = set1.intersection(set2)

print("Union:", union_result)
print("Intersection:", intersection_result)

Quick Run Notes

• Install NumPy if required: pip install numpy
• Keep employee_data.csv in the same folder where you run Program 9.
• Run scripts using: python3 filename.py