PDA Glossary
Glossary
Glossary
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A requirement that should be satisfied by the function before it ends.
A requirement that should be satisfied by the caller before a function starts.
A string that appears at the top of a function definition to document the function’s interface.
A process for writing programs.
The process of modifying a working program to improve function interfaces and other qualities of the code.
A description of how to use a function, including the name and descriptions of the arguments and return value.
An argument that includes the name of the parameter as a “keyword”.
The process of replacing something unnecessarily specific (like a number) with something appropriately general (like a variable or parameter).
The process of transforming a sequence of statements into a function definition.
A part of a program that can run repeatedly.
A function that is associated with an object and called using dot notation.
A list of the functions that are executing, printed when an exception occurs.
A box in a stack diagram that represents a function call. It contains the local variables and parameters of the function.
A graphical representation of a stack of functions, their variables, and the values they refer to.
The order statements run in.
Using an expression as part of a larger expression, or a statement as part of a larger statement.
The syntax for calling a function in another module by specifying the module name followed by a dot (period) and the function name.
A value created by an import statement that provides access to the values defined in a module.
A statement that reads a module file and creates a module object.
A file that contains a collection of related functions and other definitions.
A special value returned by void functions.
A function that always returns None.
A function that returns a value.
The result of a function. If a function call is used as an expression, the return value is the value of the expression.
A variable defined inside a function. A local variable can only be used inside its function.
A value provided to a function when the function is called. This value is assigned to the corresponding parameter in the function.
A statement that runs a function. It consists of the function name followed by an argument list in parentheses.
A name used inside a function to refer to the value passed as an argument.
The sequence of statements inside a function definition.
The first line of a function definition.
A value created by a function definition. The name of the function is a variable that refers to a function object.
A statement that creates a new function, specifying its name, parameters, and the statements it contains.
A named sequence of statements that performs some useful operation. Functions may or may not take arguments and may or may not produce a result.
An error in a program that makes it do something other than what the programmer intended.
The meaning of a program.
An error that is detected while the program is running.
An error in a program that makes it impossible to parse (and therefore impossible to interpret).
Information in a program that is meant for other programmers (or anyone reading the source code) and has no effect on the execution of the program.
To join two operands end-to-end.
Rules governing the order in which expressions involving multiple operators and operands are evaluated.
