Who developed Python?

Answer explanation

Python was developed by Guido van Rossum, who started working on it in the late 1980s and released the first version in 1991. His vision was to create a language that emphasized code readability and simplicity.

What is Python and what are its uses?

Answer explanation

Python is a high-level programming language known for its readability and versatility. It is widely used in web development, data analysis, artificial intelligence, scientific computing, and automation, making it a popular choice among developers.

What are the two modes of working in Python?

• Interactive mode

• Script mode

Answer explanation

Python has two modes of working: Interactive mode, where commands are executed one at a time, and Script mode, where code is written in a file and executed as a whole. Both are essential for different programming tasks.

How is Python interpreted?

Answer explanation

Python is an interpreted language, meaning that its code is executed line by line by an interpreter at runtime, rather than being compiled into machine code beforehand. This allows for dynamic typing and easier debugging.

What is the smallest element of Python coding termed as?

• Tokens

• Variables

• Functions

Answer explanation

In Python, the smallest element of coding is called a 'token'. Tokens are the basic building blocks of a program, including keywords, operators, identifiers, and literals. Therefore, the correct answer is 'Tokens'.

Differentiate between call by value and call by reference.

Answer explanation

Call by value passes a copy of the variable's value, so changes do not affect the original. Call by reference passes the variable's address, allowing changes to affect the original variable directly.

Identify and write the name of the Python module to which the following functions belong: (a) ceil() (b) floor() (c) randint() (d) dump() (e) sqrt() (f) factorial

• math module

• random module

• pickle module

Answer explanation

The functions belong to the following modules: (a) ceil() and (b) floor() are from the math module, (c) randint() is from the random module, and (d) dump() is from the pickle module, while (e) sqrt() and (f) factorial are also from the math module.

What type of objects can be used as keys in dictionaries?

• Mutable objects

• Immutable objects

Answer explanation

In dictionaries, keys must be immutable objects like strings, numbers, or tuples. Mutable objects, such as lists or dictionaries, cannot be used as keys because their contents can change, which would disrupt the dictionary's structure.

What is pickling and unpickling?

Answer explanation

Pickling is the process of converting a Python object into a byte stream, allowing it to be saved or transmitted. Unpickling is the reverse process, where the byte stream is converted back into the original Python object.

How is memory managed in Python?

Answer explanation

Memory in Python is managed through automatic garbage collection, which tracks and frees unused memory. Python uses reference counting and a cyclic garbage collector to handle memory allocation and deallocation efficiently.