np.ones() for one-filled arrays in NumPy - Mini Project: Build & Apply

Create and Use One-Filled Arrays with np.ones()

📖 Scenario: Imagine you are helping a factory manager who wants to track the status of machines. Each machine is either working (1) or not working (0). To start, the manager wants to create a list showing all machines are working.

🎯 Goal: You will create a one-filled array using np.ones() to represent all machines working. Then, you will set a threshold for the number of machines and finally print the array.

📋 What You'll Learn

Create a numpy array of ones with a specific size

Create a variable to hold the number of machines

Use np.ones() with the number of machines

Print the resulting array

💡 Why This Matters

🌍 Real World

One-filled arrays are useful to represent active or working states in machines, sensors, or other systems.

💼 Career

Data scientists often initialize arrays with ones to set default values or masks before processing data.

1

Create a numpy array of ones

Import numpy as np and create a numpy array called machines filled with ones of size 5 using np.ones().

NumPy

import numpy as np
# Create a numpy array called machines filled with ones of size 5
# Your code here

Need a hint?

Use np.ones(5) to create an array of five ones.

2

Set the number of machines

Create a variable called num_machines and set it to 5.

NumPy

import numpy as np
machines = np.ones(5)
# Create a variable num_machines and set it to 5
# Your code here

Need a hint?

Just write num_machines = 5.

3

Create the one-filled array using the variable

Update the machines array to use np.ones() with the size from num_machines.

NumPy

import numpy as np
machines = np.ones(5)
num_machines = 5
# Update machines to be np.ones(num_machines)
# Your code here

Need a hint?

Use the variable num_machines inside np.ones().

4

Print the one-filled array

Print the machines array to show the one-filled array.

NumPy

import numpy as np
num_machines = 5
machines = np.ones(num_machines)
# Print the machines array
# Your code here

Need a hint?

Use print(machines) to display the array.