Python Variables Made Easy: Networking CRUD Examples Explained!

In this video, we will learn about variables in Python. Below is the code I used in the video. I encourage you to try this out yourself.

# Introduction to Variables
# - Think of a variable as a labeled container that stores information.
# - Variables are essentially human-friendly names that represent data stored in memory.
# - Instead of working directly with raw data (like numbers, strings, or complex objects), variables give us an easy way to refer to that data.

# Variable Naming Conventions
# - Use descriptive and meaningful names (e.g., 'device_ip' instead of 'x').
# - Variable names should be lowercase, with words separated by underscores (snake_case).
# - Avoid starting variable names with numbers or using special characters (e.g., $ or %).
# - Do not use reserved keywords (e.g., 'def', 'class', etc.).
# - Stick to clear and consistent naming styles for readability.

# Section 1: Create
# - Creating a variable means assigning a value to a name.
# - It's like adding a labeled tool to your toolbox.

# Example: Storing device information
device_ip = "192.168.1.1"
hostname = "Switch1"
print(f"Created device: {hostname} with IP {device_ip}")

# Section 2: Read
# - Reading a variable means accessing its value.
# - It's like pulling a labeled tool from the toolbox to use it.

# Example: Reading stored device information
print(f"Device IP: {device_ip}")
print(f"Device Hostname: {hostname}")

# Section 3: Update
# - Updating a variable means changing its value while keeping the same name.
# - It's like swapping out the contents of a labeled toolbox.

# Example: Updating the IP address and hostname
device_ip = "192.168.1.2" # New IP address for the device
hostname = "Router1" # Updated hostname
print(f"Updated device: {hostname} with new IP {device_ip}")

# Section 4: Delete
# - Deleting a variable removes it from memory, like discarding a tool you no longer need.

# Example: Deleting variables
del device_ip
del hostname

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