NumPy Array

What is a NumPy Array?

• A NumPy array is a collection of values stored in a structured way.

Numpy also supports:

• 1D arrays

• 2D arrays

• 3D arrays

• Higher-dimensioanl arrays

Access Array Elements

• We can access individual elements using their index.

arr = np.array([10, 20, 30, 40])

print(arr[0])
print(arr[3])

Output:

10
40

Array Slicing

• Slicing is used to extract a portion of an array.

arr = np.array([10, 20, 30, 40])

print(arr[0:3])

Output:

[10 20 30]

1D Array

• A 1D array contains values in a single row.

Output:

Attributes:

Output:

2D Array

• A 2D array contains rows and columns.

Output:

Attributes:

Output:

3D Array

• NumPy can also create 3D arrays.

Output:

Attributes:

Output: