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Glossary

23 二月, 2015 - 12:12

assignment: A statement that assigns a value to a variable.

concatenate: To join two operands end-to-end.

comment: 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.

evaluate: To simplify an expression by performing the operations in order to yield a single value.

expression: A combination of variables, operators, and values that represents a single result value.

floating-point: A type that represents numbers with fractional parts.

floor division: The operation that divides two numbers and chops off the fraction part.

integer: A type that represents whole numbers.

keyword: A reserved word that is used by the compiler to parse a program; you cannot use keywords like if, def, and while as variable names.

mnemonic: A memory aid. We often give variables mnemonic names to help us remember what is stored in the variable.

modulus operator: An operator, denoted with a percent sign (%), that works on integers and yields the remainder when one number is divided by another.

operand: One of the values on which an operator operates.

operator: A special symbol that represents a simple computation like addition, multiplication, or string concatenation.

rules of precedence: The set of rules governing the order in which expressions involving multiple operators and operands are evaluated.

statement: A section of code that represents a command or action. So far, the statements we have seen are assignments and print statements.

string: A type that represents sequences of characters.

type: A category of values. The types we have seen so far are integers (type int), floating-point numbers (type float), and strings (type str).

value: One of the basic units of data, like a number or string, that a program manipulates.

variable: A name that refers to a value.