Student Activity

Student Activity Guide:

1) Creating and Using Modules

• Write a Python module that contains a simple function.

• Import the module in another script and use the function.

Example Code:

my_module.py

def greet(name):
    return f"Hello, {name}!"

main.py

import my_module
print(my_module.greet("Alice"))

Student Exercise: Create a module with multiple functions and import it in another script.

2) Importing and Using Built-in Modules

• Explore Python's built-in modules like math and random.

• Use the datetime module to display the current date and time.

Example Code:

import math
print(math.sqrt(16))  # Output: 4.0

import random
print(random.randint(1, 10))  # Random number between 1 and 10

from datetime import datetime
print(datetime.now())

Student Exercise: Use the os module to list all files in a directory.

3) Structuring Python Projects with Packages

• Create a package with multiple modules and use them.

• Organize project files into logical directories.

Example Code:

project/

project/
    ├── mypackage/
    │   ├── __init__.py
    │   ├── module1.py
    │   ├── module2.py
    ├── main.py

module1.py

def function1():
    return "Function from module1"

module2.py

def function2():
    return "Function from module2"

main.py

from mypackage import module1, module2
print(module1.function1())
print(module2.function2())

Student Exercise: Create a Python package with two modules and import functions from them.

4) Virtual Environments and Dependency Management

• Set up a virtual environment using venv.

• Install and manage dependencies using pip.

Example Code:

# Create a virtual environment
python -m venv myenv

# Activate the virtual environment
# Windows:
myenv\Scripts\activate
# macOS/Linux:
source myenv/bin/activate

# Install dependencies
pip install requests numpy

# Freeze dependencies
pip freeze > requirements.txt

# Install dependencies from file
pip install -r requirements.txt

Student Exercise: Create a virtual environment, install some packages, and generate a requirements.txt file.