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Showing content from https://www.geeksforgeeks.org/constants-of-maths-in-python/ below:

Constants of Maths in Python

Last Updated : 12 Jul, 2025

Math module

is a standard in-built module in Python that can be used for performing the mathematical tasks. The math module has a set of methods and constants.

Note:

For more information, refer to

Math-library-functions 1. Python math.e constant:

The math.e constant returns the Euler's number: 2.71828182846.

Syntax: math.e Returns: Return a float value, 2.71828182846, representing the mathematical constant e

Example: Python3


 # Import math Library
import math

# Print the value of Euler e
print (math.e)

Output:

2.718281828459045

2. Python math.pi constant:

The math.pi constant returns the value pi: 3.14159265359. It is defined as the ratio of the circumference to the diameter of a circle.

Syntax: math.pi Returns: A float value, 3.14159265359, representing the mathematical constant PI

Example: Python3


 # Import math Library
import math

# Print the value of pi
print (math.pi)

Output:

3.141592653589793

3. Python math.tau constant:

The math.tau constant returns the value tau: 6.283185307179586. It is defined as the ratio of the circumference to the radius of a circle.

Syntax: math.tau Returns: A float value, 6.283185307179586, representing the mathematical constant tau

Example: Python3


 # Import math Library
import math

# Print the value of tau
print (math.tau)

Output:

6.283185307179586

4. Python math.inf constant:

The math.inf constant returns of positive infinity. For negative infinity, use -math.inf.The inf constant is equivalent to float("inf").

Syntax: math.inf Returns: A float value, returns the value of positive infinity.

Example: Python3


 # Import math Library
import math

# Print the positive infinity
print (math.inf)

# Print the negative infinity
print (-math.inf)

Output:

inf
-inf

5. Python math.nan constant:

The math.nan constant returns a floating-point nan (Not a Number) value. This value is not a legal number.The nan constant is equivalent to float("nan").

Syntax: math.nan Returns: A float value, nan (Not a Number)

Example: Python3


 # Import math Library
import math

# Print the value of nan
print (math.nan)

Output:

nan

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