np.unique()

np.append(arr, value)

Finds the unique elements of an array.

Input:

arr : array

The input array to find unique values for.

Returns:

The sorted unique values.

Return Type:

array

---

pets_species = pets.get('Species')
pets_species

• 0"dog"
• 1"cat"
• 2"cat"
• 3"dog"
• 4"dog"
• 5"hamster"
• 6"hamster"
• 7"cat"

Name: Species, dtype: object

species_array = np.array(pets_species)

array(['dog', 'cat', 'cat', 'dog', 'dog', 'hamster', 'hamster', 'cat'])

np.unique(species_array)

array(['cat', 'dog', 'hamster'])