Python In Practice - 15 Projects to Master Python - isinstance( )

The video tutorial explains how to use the isinstance function in Python to check if an object is an instance of a specific class or subclass. It demonstrates this with examples using numbers to check if they are integers or floats, and extends the concept to custom-defined classes. The tutorial highlights the versatility of isinstance in verifying object types and class membership.

What is the primary purpose of the instance checking function discussed in the video?

• To convert a number from integer to float

• To determine if a number is positive or negative

• To print the value of a variable

• To check if an object is an instance of a specific class

Which statement correctly describes the use of conditional statements in instance checking?

• They help in deciding the flow based on the type of an object.

• They are used to initialize variables.

• They are used to convert data types.

• They are used to create new classes.

What will be printed if the input number is 12.0 in the instance checking example?

• It is not a number

• It is a full load

• Number is integer

• Number is float

How does the instance checking function work with custom-defined classes?

• It can only check built-in data types.

• It cannot be used with custom classes.

• It can verify if an object is an instance of a custom class.

• It automatically creates instances of custom classes.

In the example with the 'Person' class, what does the instance checking function return when checking the 'bar' object?

• Null

• False

• True

• Error