Mastering Python Fundamentals

What are the basic data types available in Python?

• string, number, boolean, collection

• int, float, str, bool, list, tuple, set, dict

• char, decimal, array, object

• integer, double, character, map

How do you declare a variable in Python?

• declare variable_name as value

• You declare a variable in Python by using the syntax: variable_name = value.

• variable_name : value

• value = variable_name

What is the difference between a list and a tuple in Python?

• Lists are faster than tuples in all operations.

• Lists can contain only numbers while tuples can contain any data type.

• The main difference is that lists are mutable and tuples are immutable.

• Tuples are created using square brackets while lists use parentheses.

Explain the use of 'if', 'elif', and 'else' statements in Python.

• 'if' is for defining classes, 'elif' is for error handling, and 'else' is for data types.

• 'if' checks for syntax errors, 'elif' checks for runtime errors, and 'else' checks for logical errors.

• 'if' checks a condition, 'elif' checks additional conditions, and 'else' executes if none are true.

• 'if' is used for loops, 'elif' is for defining functions, and 'else' is for importing modules.

What is a for loop and how is it used in Python?

• A for loop is a method for creating classes in Python.

• A for loop is a type of variable in Python.

• A for loop is a control flow statement that allows code to be executed repeatedly for each item in a sequence.

• A for loop is used to define functions in Python.

How can you iterate over a dictionary in Python?

• Convert the dictionary to a list and iterate over it.

• Use a while loop to iterate over the dictionary.

• Use recursion to access each key-value pair in the dictionary.

• Use a for loop with dict.keys(), dict.values(), or dict.items() to iterate over a dictionary.

What is the purpose of the 'break' statement in a loop?

• To continue the loop indefinitely.

• To exit a loop prematurely.

• To skip the current iteration of the loop.

• To pause the loop for a specified time.

How do you handle exceptions in Python using try and except?

• Use 'try' to define a function and 'except' to return a value.

• Wrap all code in 'except' to catch any exceptions.

• Use 'try' to ignore exceptions and continue execution.

• Use 'try' to wrap code that may raise an exception, and 'except' to handle the exception.

What is the significance of indentation in Python control flow?

• Indentation is optional in Python and has no effect on control flow.

• Indentation is used to separate different programming languages in Python.

• Indentation is only used for comments in Python code.

• Indentation is crucial in Python as it defines the structure and flow of control statements.

How can you use the 'while' loop to create an infinite loop in Python?

• while x < 10:

• while True:

• while False:

• while 1: