Memory usage analysis in Data Analysis Python - Mini Project: Build & Apply

Memory usage analysis

📖 Scenario: You work in a small company that wants to understand how much memory different data structures use. This helps them choose the best way to store data efficiently.

🎯 Goal: You will create a dictionary with some data, set a variable to track memory size, calculate the memory used by each item, and finally print the total memory used.

📋 What You'll Learn

Create a dictionary with exact keys and values

Create a variable to hold total memory usage

Use a for loop to calculate memory usage of each dictionary item

Print the total memory usage

💡 Why This Matters

🌍 Real World

Understanding memory usage helps companies optimize their software to run faster and use less computer memory.

💼 Career

Data scientists and software engineers often analyze memory to improve program efficiency and reduce costs.

1

Create the data dictionary

Create a dictionary called data with these exact entries: 'item1': [1, 2, 3], 'item2': [4, 5], 'item3': [6].

Data Analysis Python

# Create the dictionary called data with the given entries
# Your code here

Need a hint?

Use curly braces {} to create a dictionary. Each key is a string and each value is a list of numbers.

2

Set up total memory variable

Create a variable called total_memory and set it to 0 to track the total memory used.

Data Analysis Python

data = {'item1': [1, 2, 3], 'item2': [4, 5], 'item3': [6]}
# Create total_memory variable and set it to 0
# Your code here

Need a hint?

Just write total_memory = 0 to start counting memory.

3

Calculate memory usage for each item

Use a for loop with variables key and value to iterate over data.items(). Inside the loop, add the memory size of value to total_memory using sys.getsizeof(value). Import sys at the top.

Data Analysis Python

import sys
data = {'item1': [1, 2, 3], 'item2': [4, 5], 'item3': [6]}
total_memory = 0
# Use a for loop to add memory size of each value to total_memory
# Your code here

Need a hint?

Remember to import sys first. Then use for key, value in data.items(): to loop. Use sys.getsizeof(value) to get memory size.

4

Print the total memory used

Write a print statement to display the text Total memory used: followed by the value of total_memory.

Data Analysis Python

import sys
data = {'item1': [1, 2, 3], 'item2': [4, 5], 'item3': [6]}
total_memory = 0
for key, value in data.items():
    total_memory += sys.getsizeof(value)
# Print the total memory used
# Your code here

Need a hint?

Use print(f"Total memory used: {total_memory}") to show the result.