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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 Interface Vs. Class: What's the Difference

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Here are the differences between Class and Interface in Python. Python class can have all concrete methods. But interface does not have single concrete method. Here you'll know about What's abstract method Abstract Class: How to Create it Rules to Write an Interface How to Create Abstract Class How to Create an Interface What's abstract method The abstrcat method is one which does not have body. from abc import ABC, abstract method class name_class(ABC): # abstract class @abstractmethod def name_method(self): #abstract method without body pass The interface is used when all the features are needed to be implemented differently for different objects. Rules to Write an Interface All methods of an interface should be abstract. You cannot create an interface object. If any class implements an interface, then you need to define all the methods given in that interface in child class. You need to declare all methods as abstract if that class does not implement the interface How to...
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