Language elements constants and numbers and strings
In Python, there are several types of language elements that are used to represent values in a program. Two of the most basic types are constants and numbers.
Constants are fixed values that do not change during the execution of a program. In Python, constants are typically represented using literals, which are fixed values that are directly embedded in the source code. For example, the string literal “Hello, world!” is a constant that represents the text “Hello, world!”.
Numbers, on the other hand, represent numerical values in a program. Python supports several types of numbers, including integers, floating-point numbers, and complex numbers. Integers are whole numbers, while floating-point numbers are numbers with a decimal point. Complex numbers are numbers that have both a real and imaginary component.
Strings are another important type of language element in Python. Strings represent text and are typically enclosed in quotation marks. Python supports several types of string literals, including single-quoted strings, double-quoted strings, and triple-quoted strings. Strings can be concatenated using the “+” operator, and individual characters can be accessed using indexing. Overall, language elements such as constants, numbers, and strings are the basic building blocks of Python programs, and they are essential for representing and manipulating data in a program.
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