Python Numbers

Numbers in Python can be of 3 types: int, float and complex.

Integer numbers

Integer numbers are represented using the int class. You can define an integer using a value literal:
age = 8
You can also define an integer number using the int(…


This content originally appeared on flaviocopes.com and was authored by flaviocopes.com

Numbers in Python can be of 3 types: int, float and complex.

Integer numbers

Integer numbers are represented using the int class. You can define an integer using a value literal:

age = 8

You can also define an integer number using the int() constructor:

age = int(8)

To check if a variable is of type int, you can use the type() global function:

type(age) == int #True

Floating point numbers

Floating point numbers (fractions) are of type float. You can define an integer using a value literal:

fraction = 0.1

Or using the float() constructor:

fraction = float(0.1)

To check if a variable is of type float, you can use the type() global function:

type(fraction) == float #True

Complex numbers

Complex numbers are of type complex.

You can define them using a value literal:

complexNumber = 2+3j

or using the complex() constructor:

complexNumber = complex(2, 3)

Once you have a complex number, you can get its real and imaginary part:

complexNumber.real #2.0
complexNumber.imag #3.0

Again, to check if a variable is of type complex, you can use the type() global function:

type(complexNumber) == complex #True

Arithmetic operations on numbers

You can perform arithmetic operations on numbers, using the arithmetic operators: +, -, *, / (division), % (remainder), ** (exponentiation) and // (floor division):

1 + 1 #2
2 - 1 #1
2 * 2 #4
4 / 2 #2
4 % 3 #1
4 ** 2 #16
4 // 2 #2

and you can use the compound assignment operators

  • +=
  • -=
  • *=
  • /=
  • %=
  • ..and so on

to quickly perform operations on variables, too:

age = 8
age += 1

Built-in Functions

There are 2 built-in functions that help with numbers:

abs() returns the absolute value of a number.

round() given a number, returns its value rounded to the nearest integer:

round(0.12) #0

You can specify a second parameter to set the decimal points precision:

round(0.12, 1) #0.1

Several other math utility functions and constants are provided by the Python standard library:

  • the math package provides general math functions and constants
  • the cmath package provides utilities to work with complex numbers.
  • the decimal package provides utilities to work with decimals and floating point numbers.
  • the fractions package provides utilities to work with rational numbers

We’ll explore some of those separately later on.


This content originally appeared on flaviocopes.com and was authored by flaviocopes.com


Print Share Comment Cite Upload Translate Updates
APA

flaviocopes.com | Sciencx (2020-12-05T05:00:00+00:00) Python Numbers. Retrieved from https://www.scien.cx/2020/12/05/python-numbers/

MLA
" » Python Numbers." flaviocopes.com | Sciencx - Saturday December 5, 2020, https://www.scien.cx/2020/12/05/python-numbers/
HARVARD
flaviocopes.com | Sciencx Saturday December 5, 2020 » Python Numbers., viewed ,<https://www.scien.cx/2020/12/05/python-numbers/>
VANCOUVER
flaviocopes.com | Sciencx - » Python Numbers. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2020/12/05/python-numbers/
CHICAGO
" » Python Numbers." flaviocopes.com | Sciencx - Accessed . https://www.scien.cx/2020/12/05/python-numbers/
IEEE
" » Python Numbers." flaviocopes.com | Sciencx [Online]. Available: https://www.scien.cx/2020/12/05/python-numbers/. [Accessed: ]
rf:citation
» Python Numbers | flaviocopes.com | Sciencx | https://www.scien.cx/2020/12/05/python-numbers/ |

Please log in to upload a file.



There are no updates yet.
Click the Upload button above to add an update.

You must be logged in to translate posts. Please log in or register.

Related Posts