DEV Community: Reshma

Build a Simple Miles to Kilometers Converter with Python & Tkinter

Reshma — Sat, 20 Sep 2025 17:20:34 +0000

Build a Simple Miles to Kilometers Converter with Python & Tkinter

Check out my github repo:
Reshma-2517/miles-to-km-tkinter

Have you ever wanted to start with Python GUI development but didn’t know where to begin?
Here’s a fun little project I built: a Miles to Kilometers Converter using Tkinter, Python’s built-in GUI library.

What this project does

Take user input in miles
Convert it into kilometers using the formula:


python
kilometers = miles * 1.6

Sum of digits of a given number

Reshma — Sat, 05 Apr 2025 05:40:10 +0000

n = 209.882
t = str(n)  #converting integer into string so we can loop through it.
if t.startswith('-'):  #if it is a negative number 
    t = t[1:]          #slicing it so that - is not considered
t = t.replace('.','')  #for float type ,replacing (.) with empty string
s = 0
for i in t:
    s += int(i)

print(s)

sum of all even numbers in a given list

Reshma — Fri, 04 Apr 2025 07:58:15 +0000

n = [1,-2,4,35,0,0]
sum_value = 0 #Initialising sum_value with 0
for i in n:
    if i % 2 == 0: #if the remainder is 0 when divided by 2:Even number        
        sum_value += i
print(sum_value)

#output: 2

count the number of consonants in a string using python

Reshma — Fri, 04 Apr 2025 07:53:55 +0000

"""Note that a non-vowel character is not always a consonant.So take care about other characters like numbers or special characters."""
vowels = 'aeiou'
s = input("Enter the string: ").lower()
count = 0
for i in range(len(s)):
    if s[i] not in vowels and s[i].isalpha(): #checks if character is alphabet
        count += 1

print(count)

#output : happy - 4

Factorial of a number using iteration

Reshma — Fri, 04 Apr 2025 07:49:36 +0000

n = 12
fact = 1
for i in range(1, n + 1):
    fact *= i

print(fact)

Black Jack game in python

Reshma — Sun, 30 Mar 2025 03:23:59 +0000


import random
cards = [11,2,3,4,5,6,7,8,9,10,10,10,10]
divider = """________________________________________________________________________"""

def blackjack():

    # user drawing first two cards
    usercard1 = random.choice(cards)
    usercard2 = random.choice(cards)
    usercards = [usercard1,usercard2]
    usersum = usercard1 + usercard2
    print(f"your cards: {usercards}")



    #computer drawing a card
    dealercard = random.choice(cards)
    dealersum = dealercard
    print(f"Dealer card: {[dealercard]}")

    flag = True

    while flag:
        if usersum == 21:
            print("You win")
            flag = False
        elif usersum > 21:
            print("Bust")
            flag = False
        choice = input("Type 'h' to hit and 's' to stand: ").lower()

        if choice == 'h':
            #user draws another card

            usercard3 = random.choice(cards)
            usersum += usercard3
            print(f"Your total sum is : {[usersum]} ")
            if usersum > 21:
                print("Bust")
                flag = False
            elif usersum == 21:
                print("You win")
                flag = False
            else:   
                flag = True

        else:

            while dealersum < 18:
                dealercard2 = random.choice(cards)
                dealersum +=  dealercard2
            print(f"Dealer's sum is : {[dealersum]} ")
            if dealersum > 21:
                print("You win")
                flag = False
            elif usersum > 21:
                print("Bust")
                flag = False
            elif usersum == 21:
                print("You win")
                flag = False
            elif dealersum > usersum:
                print("You lose")
                flag = False
            elif dealersum == usersum:
                print("Draw")
                flag = False
            else:
                flag = False



blackjack()
res = input("Type 'Y' to Start again and 'N' to exit: ").lower()
if res == 'y':
    print(divider)
    blackjack()
else:
    exit()

Why does recursion always starts with the problem factorial ?

Reshma — Sat, 29 Mar 2025 10:37:05 +0000

def factorial(n):
    assert int(n) == n and n > 0,"Enter a positive integer only
    if n == 0:   #base condition
        return 1
    else:
        return n*factorial(n - 1)  #Recursive case
print(factorial(n))