Скачать или смотреть How to Concatenate Lists in Python [Explained in Hindi]

Ever been asked how to combine two lists in a Python interview? This quick tutorial breaks down the two essential methods: the + operator and the .extend() method. We'll cover the key difference that every developer should know.

By the end of this video, you'll understand exactly when to use each method for clean, efficient code.

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✅ Method 1: The '+' Operator (Creates a new list)
Creates a new list by joining two lists together.

a = [1, 2, 3]
b = [4, 5, 6]
res = a + b
Output: [1, 2, 3, 4, 5, 6]


✅ Method 2: The extend() Method (Modifies in-place)
Adds all the elements of the second list to the end of the first list.

a = [1, 2, 3]
b = [4, 5, 6]
a.extend(b)
Output: [1, 2, 3, 4, 5, 6]


💡 Key Takeaway:
Use '+' for a new list.
Use '.extend()' to modify a list in-place (more memory-efficient).


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