Practicing Python For Loops and Accumulation

Why I studied this

I’m learning how to use for loops in Python.
They are useful when I need to repeat something, count numbers, or process input data.

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What I did

Printing numbers using for loop

for i in [1,2,3,4,5,6,7,8,9,10]:
    print(i)

for i in range(1,11):
    print(i)

for i in range(2, 100, 2):
    print(i, end=" ")
print()

I learned how range(start, end, step) works and how to print numbers in a loop.

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Making a grid of numbers from 1 to 100

for i in range(1, 101):
    print(i, end=" ")
    if i % 10 == 0:
        print()

This prints 1 to 100 in a 10 by 10 layout.

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Converting characters to Unicode

print(ord("A"))  # 65
print(ord("a"))  # 97
print(ord("0"))  # 48

The ord() function returns the Unicode number of a character.

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Summing numbers from 1 to user input

sum = 0
limit = int(input())
for i in range(1, limit + 1):
    sum = sum + i
    print(f"i={i} sum={sum}")

This code asks for a number and adds all numbers from 1 to that number.

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Adding 5 numbers from user input

sum = 0
for i in range(1, 6):
    n = input("Enter a number: ")
    sum = sum + int(n)
print(sum)

I used for to repeat input 5 times and added the numbers.

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Separating even and odd sums from 10 inputs

even_sum = 0
odd_sum = 0

for i in range(10):
    n = int(input("Enter a number: "))
    if n % 2 == 0:
        even_sum += n
    else:
        odd_sum += n

print("Even sum =", even_sum)
print("Odd sum =", odd_sum)

I used if to check even or odd and calculated each sum separately.

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What I learned

I learned how to use for loops with ranges and lists.
I also practiced using input() inside a loop and how to keep a running total (accumulation).
Now I feel more confident working with repeated actions and basic logic.

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What I want to do next

I want to try nested loops and maybe work on small problems like multiplication tables or mini games using loops.