Python 2.1 | The "Hello, World!" Program

ValueError

An error that occurs when a function receives an argument of an inappropriate type or value.

Print() function

A built-in Python function used to display output or information on the console. It takes one or more arguments and prints them to the screen.

Function

A named section of code that performs a specific task. In Python, functions can have inputs (arguments) and outputs (return values).

String

A sequence of characters enclosed in quotes. In Python, strings are used to represent text or data.

Program

A set of instructions written in a programming language to perform a specific task or solve a problem.

Instruction

A single line of code that performs a specific action or operation within a program.

Escape character

A special character, preceded by a backslash (), that is used to represent characters with special meanings in strings.

None

A special value in Python that represents the absence of a value or no return value from a function.

Console

A text-based interface where you can interact with the Python interpreter and see program output.

Argument

A value or variable passed to a function when it is called. It provides necessary data for the function to perform its task.

Syntax error

An error that occurs when code violates the rules of the programming language's syntax, making it impossible to interpret or execute.

Positional arguments

Arguments passed to a function in the order specified by the function's parameter list. Their values are assigned based on their position in the argument list.

Code

Instructions written in a programming language that are executed by a computer.

Parentheses

Symbols "(" and ")" used to enclose arguments or expressions in Python. They indicate the start and end of a function call.

Invocation

The act of calling or executing a function in a program. It involves using the function name followed by parentheses and passing any required arguments.

Newline character

The escape sequence "\n" used to insert a line break or start a new line in a string or output.

Semantics

The meaning and interpretation of programming constructs and instructions.

Syntax

The set of rules that define the structure and format of a programming language.

Keyword Argument

an argument identified by a special word, not by the argument's location (position)