Mastering Python Assignments

What is the convention for naming variables in Python?

• Variable names must always be in uppercase letters.

• Variable names cannot start with an underscore.

• Variable names in Python should start with a letter or underscore, followed by letters, numbers, or underscores, and are case-sensitive.

• Variable names can only contain letters and numbers.

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

• 1variable

• variable1

• variable-name

• variable@name

What is the syntax for multiple assignment in Python?

• var1 = value1, var2 = value2, var3 = value3

• var1, var2 = value1, value2

• var1, var2, var3 = value1

• var1, var2, var3 = value1, value2, value3

How do you assign values to multiple variables in one line?

• a = 1; b = 2; c = 3

• 1, 2, 3 = a, b, c

• a, b, c := 1, 2, 3

• a, b, c = 1, 2, 3

What is dynamic typing in Python?

• Dynamic typing allows variables in Python to hold values of different types at different times.

• Dynamic typing means variables must always be of the same type.

• Dynamic typing prevents type errors at runtime.

• Dynamic typing requires explicit type declarations for variables.

Which of the following is an example of dynamic typing?

• Java

• C++

• Ruby

• Python

What are the best practices for naming identifiers in Python?

• Name variables after their data type

• Use descriptive names, follow PEP 8, use lowercase with underscores for variables/functions, CamelCase for classes, avoid single character names, and don't use reserved keywords.

• Use special characters to separate words in names

• Use only uppercase letters for all identifiers

Why should variable names be descriptive?

• Variable names should be descriptive to enhance code readability and maintainability.

• Descriptive names are only necessary for large projects.

• Variable names should be random to avoid confusion.

• Descriptive variable names slow down code execution.

What is the maximum length of a variable name in Python?

• 1000 characters

• 512 characters

• 255 characters

• 128 characters

What characters are allowed in Python variable names?

• Only uppercase letters and digits

• Special characters like @ and #

• Letters, digits (not starting with a digit), and underscores.

• Only letters and digits