Introduction to Program Development

A sequence of characters enclosed in single or double quotes. In Python, strings are considered a data type. Examples: 'Hello', "World", '123'

A function in Python that allows reading input from the keyboard. Accepts an optional prompt message which is displayed to the user.

A variable in Python is a named storage location where you can store data. It allows you to reference and manipulate data in your program.

The data type of a variable determines what kind of values it can hold, like numbers, text, or boolean values. In Python, the data type is automatically inferred from the assigned value.

The value represented by a variable. Can be a number, text, or any other data supported by the programming language.

An integer is a whole number without a decimal point.

A floating-point number is a number with a decimal point.

A numeric literal is a number directly written into program code.

Python automatically determines the data type of a numeric literal based on its form.

Reassigning a variable means changing the value it references.

A sequence of characters enclosed within single or double quotes, representing text data within a Python program.

Single or double quotes that enclose a string literal, defining the beginning and end of the string.

Triple quotes (either """ or '''), allowing strings to span multiple lines and include single and double quotes within them.

Statements that are ignored by the Python interpreter, used to explain code or provide documentation.

The symbol '#' used to mark the beginning of a comment in Python.

Explanatory notes within the code that enhance readability and understanding. Comments are vital even though they are ignored by the interpreter.

Source code written by a programmer. It contains instructions that create a computer program.

The process of reading and interpreting the source code of a program by a computer.

A comment that appears at the end of a line of code, providing an explanation for that line.

The process of displaying data on the screen. It's how a program communicates results to the user.

The act of storing data into the computer's memory, making that data available for processing.

The steps taken by a program to manipulate data. It involves calculations, comparisons, and transformations on the stored values.

Comments are essential for making your code easier to understand. They make your code more maintainable and help other programmers understand your logic.

The process of assigning a value to a variable. This value is stored in the memory location associated with the variable.

A variable is declared by specifying its name and data type, followed by an assignment statement to store an initial value. For example: age = 25

A variable name must start with a letter or an underscore (_) and can contain letters, numbers, and underscores. It cannot start with a number.

An error that occurs when attempting to assign a value to a constant or literal. It commonly arises when mistakenly trying to assign a value to a numerical value or a string literal.

The process of displaying the value stored in a variable, effectively making the contents visible.

Variables can be used to store different data types, allowing for flexible and dynamic program execution. Common data types include integers, floats, strings, and booleans.

The ability of the Python interpreter to release memory used by values that are no longer referenced by variables.

The function that prints output to the console, allowing programmers to display information to the user.

A value provided to a function, which the function uses in its processing. The print function, for example, can take multiple arguments to display.