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Python: Built-in Functions vs. For & If Loops – 5 Programs Explained

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Python’s built-in functions make coding fast and efficient. But understanding how they work under the hood is crucial to mastering Python. This post shows five Python tasks, each implemented in two ways: Using built-in functions Using for loops and if statements ✅ 1. Sum of a List ✅ Using Built-in Function: numbers = [ 10 , 20 , 30 , 40 ] total = sum (numbers) print ( "Sum:" , total) 🔁 Using For Loop: numbers = [ 10 , 20 , 30 , 40 ] total = 0 for num in numbers: total += num print ( "Sum:" , total) ✅ 2. Find Maximum Value ✅ Using Built-in Function: values = [ 3 , 18 , 7 , 24 , 11 ] maximum = max (values) print ( "Max:" , maximum) 🔁 Using For and If: values = [ 3 , 18 , 7 , 24 , 11 ] maximum = values[ 0 ] for val in values: if val > maximum: maximum = val print ( "Max:" , maximum) ✅ 3. Count Vowels in a String ✅ Using Built-ins: text = "hello world" vowel_count = sum ( 1 for ch in text if ch i...
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Python Split String: Techniques and Best Practices

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Here is an example for splitting a string in Python. The functions you need are strip and split to split string, or text. 

python split string


Here's the string taken for split

My task is I want to split address string. Historically, the address is lengthy. It contains the door number, floor number, street number, and street name.

Rama Krishna 20/3 ABC street EFG Nagar US 234567

How to Split a string

The python split string works in two steps. The first step is to use strip function, which removes both leading and trailing spaces. Next, use the the split function, which splits the input string, or text into a list.

Python program

user_address = input("Enter an address")

if user_address.strip(): #check that string is not empty (after removing leading
#and trailing spaces)
    print("Your address is " + user_address)
split_address = user_address.split()
print(split_address)

Output

Interactively, it asks the user to enter the address. After the code runs, the address splits into separate strings in a list.

Enter an address
Rama Krishna 20/3 ABC street EFG Nagar US 234567

Your address is Rama Krishna 20/3 ABC street EFG Nagar US 234567
['Rama', 'Krishna', '20/3', 'ABC', 'street', 'EFG', 'Nagar', 'US', '234567']

** Process exited - Return Code: 0 **
Press Enter to exit terminal

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