np.unique() for unique values in NumPy - Mini Project: Build & Apply

Finding Unique Values with np.unique()

📖 Scenario: You work in a store that tracks daily sales of different fruits. Sometimes the same fruit is sold multiple times in a day. You want to find out which unique fruits were sold today.

🎯 Goal: Build a small program that uses np.unique() to find all unique fruits sold from a list of sales.

📋 What You'll Learn

Create a numpy array called sales with the exact fruit names given.

Create a variable called unique_fruits that stores the unique fruit names using np.unique().

Print the unique_fruits array to see the result.

💡 Why This Matters

🌍 Real World

Stores and businesses often need to find unique items sold or listed to analyze inventory or sales trends.

💼 Career

Data analysts and scientists use <code>np.unique()</code> to quickly find unique values in datasets for reporting and decision making.

1

Create the sales data array

Create a numpy array called sales with these exact fruit names in this order: 'apple', 'banana', 'apple', 'orange', 'banana', 'kiwi'.

NumPy

import numpy as np

# Create the numpy array called sales with the given fruits
# Your code here

Need a hint?

Use np.array([...]) to create the array with the exact fruit names.

2

Set up the variable for unique fruits

Create a variable called unique_fruits and set it to None for now as a placeholder.

NumPy

import numpy as np

sales = np.array(['apple', 'banana', 'apple', 'orange', 'banana', 'kiwi'])

# Create the variable unique_fruits and set it to None
# Your code here

Need a hint?

This step just prepares the variable. We will update it next.

3

Find unique fruits using np.unique()

Use np.unique() on the sales array and assign the result to the variable unique_fruits.

NumPy

import numpy as np

sales = np.array(['apple', 'banana', 'apple', 'orange', 'banana', 'kiwi'])

unique_fruits = None

# Use np.unique() on sales and assign to unique_fruits
# Your code here

Need a hint?

Call np.unique() with sales inside the parentheses.

4

Print the unique fruits

Print the variable unique_fruits to display the unique fruit names.

NumPy

import numpy as np

sales = np.array(['apple', 'banana', 'apple', 'orange', 'banana', 'kiwi'])

unique_fruits = np.unique(sales)

# Print the unique_fruits array
# Your code here

Need a hint?

Use print(unique_fruits) to show the unique fruits.