EDA Python - 06-3variable_name_rules

The video tutorial emphasizes the importance of using meaningful variable names in programming to enhance code readability and maintainability. It outlines the rules for naming variables in Python, including starting with a letter or underscore, using only alphanumeric characters, and being case-sensitive. The tutorial also warns against using reserved words as variable names and highlights common syntax errors. Additionally, it demonstrates Python's capability for multiple assignments, allowing for efficient variable swapping without the need for a dummy variable.

Why is it important to use descriptive names for variables?

• To reduce the number of lines in the code

• To make the code easier to understand and maintain

• To ensure the code runs faster

• To make the code look more complex

Which of the following is a valid variable name in Python?

• variable-name

• $variable

• 1variable

• variable_name

What will happen if you try to use a Python keyword as a variable name?

• The keyword will be automatically renamed

• The keyword will be ignored

• The code will throw a syntax error

• The code will run without any issues

What is the result of the following code snippet? first, second = 1, 2 first, second = second, first print(first, second)

• 1 2

• 2 1

• 1 1

• 2 2

In Python, what is the advantage of multiple assignments?

• It allows for faster execution of code

• It allows for the use of special characters in variable names

• It increases the readability of the code

• It reduces the need for temporary variables