Python NumPy Tutorial — Inspecting Arrays: shape, ndim, size & dtype (int32, float64, astype)

NumPy Array Inspection Explained — shape, ndim, size, dtype, astype | Python Data Science Tutorial

Welcome to this beginner-friendly NumPy Data Science tutorial, where you will learn how to inspect and understand arrays using the most essential NumPy attributes and methods.
In this video, we cover:

What You Will Learn

What is arr.shape and how to read the shape of a NumPy array
Difference between arr.ndim (number of dimensions) and arr.size (total elements)
Understanding arr.dtype — the data type of an array
Common NumPy data types: np.int32, np.float64, etc.
How and why to convert data types using arr.astype()
Real-world examples used in Data Science, Machine Learning, and Python programming

🎯 Why This Topic Matters

Understanding array structure and data types is one of the most important skills in NumPy, and it directly impacts:

Data preprocessing
Model performance
Memory usage
Efficient coding in Python for Data Science and ML

🧠 Who Is This Video For?

This tutorial is perfect for:
Data Science beginners
Python learners
Students preparing for interviews
Anyone who wants to master NumPy step-by-step

📌 Keywords Covered

NumPy tutorial, NumPy for beginners, NumPy array shape, ndim, size, dtype, astype, Python data types, NumPy int32, NumPy float64, inspect arrays Python, Data Science with Python, Machine Learning prep, NumPy basics

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▶️ Watch till the end to understand every attribute clearly with examples!
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