# Built-in Types — Numeric Types --- int, float, complex

> pair: object; numeric pair: object; Boolean pair: object; integer pair: object; floating-point pair: object; complex number pair: C; language There are three distinct numeric types: integers, floating-point numbers, and complex numbers.

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- Updated: `2026-08-16T09:31:48.695354+00:00`
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pair: object; numeric pair: object; Boolean pair: object; integer pair: object; floating-point pair: object; complex number pair: C; language

There are three distinct numeric types: integers, floating-point numbers, and complex numbers. In addition, Booleans are a subtype of integers. Integers have unlimited precision. Floating-point numbers are usually implemented using double in C; information about the precision and internal representation of floating-point numbers for the machine on which your program is running is available in sys.float_info. Complex numbers have a real and imaginary part, which are each a floating-point number. To extract these parts from a complex number z, use z.real and z.imag. (The standard library includes the additional numeric types fractions.Fraction, for rationals, and decimal.Decimal, for floating-point numbers with user-definable precision.)

pair: numeric; literals pair: integer; literals pair: floating-point; literals pair: complex number; literals pair: hexadecimal; literals pair: octal; literals pair: binary; literals

Numbers are created by numeric literals or as the result of built-in functions and operators. Unadorned integer literals (including hex, octal and binary numbers) yield integers. Numeric literals containing a decimal point or an exponent sign yield floating-point numbers. Appending 'j' or 'J' to a numeric literal yields an imaginary number (a complex number with a zero real part) which you can add to an integer or float to get a complex number with real and imaginary parts.

The constructors int, float, and complex can be used to produce numbers of a specific type.

single: arithmetic pair: built-in function; int pair: built-in function; float pair: built-in function; complex single: operator; + (plus) single: + (plus); unary operator single: + (plus); binary operator single: operator; - (minus) single: - (minus); unary operator single: - (minus); binary operator pair: operator; (asterisk) pair: operator; / (slash) pair: operator; // pair: operator; % (percent) pair: operator;

Python fully supports mixed arithmetic: when a binary arithmetic operator has operands of different built-in numeric types, the operand with the "narrower" type is widened to that of the other …

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