Python 3 for Beginners: Python Standard Library and Creating Modules in Python

The video tutorial introduces Python's standard library, emphasizing the use of existing modules like CSV, logging, and HTTP requests to avoid reinventing the wheel. It explains how to handle errors using the SYS module's exit method. The tutorial also covers creating custom modules and importing them into other programs. It highlights the importance of controlling module execution behavior using the __name__ variable, allowing different behaviors when a module is run directly or imported. This approach is common in Python applications, ensuring that code is only executed when intended.

Which module would you use to handle CSV files in Python?

• sys

• json

• csv

• os

What is the purpose of the exit method in the sys module?

• To log errors to a file

• To import modules dynamically

• To terminate a program cleanly

• To start a new Python process

What file extension is used for Python modules?

• .json

• .py

• .txt

• .csv

What happens when a Python module is imported?

• It is converted to a JSON object

• It is ignored unless explicitly called

• It is compiled into bytecode

• Its contents are executed

How can you prevent a Python program from executing when imported as a module?

• By using the __name__ variable

• By using the __main__ variable

• By using the __import__ function

• By using the __init__ method