# Define an Infinite Number in Python

You can define an infinite number in Python as follows,

infinite_number = float('inf')

Let's print it out.

print(infinite_number)
Output:
inf

float('inf') provides a positive intifinite number. In the same way, we can define a negative infinite number as float("-inf)

Example:

>>> infinite_number = float('inf')
>>> print("Positive Infinite Number:",infinite_number)
Positive Infinite Number: inf
>>>
>>> if(1000 < infinite_number):
...   print(f"{infinite_number} is greater than 1000")
...
inf is greater than 1000
>>> negative_infinite_number = float('-inf')
>>> print("Negative Infinite Number:",infinite_number)
Negative Infinite Number: inf
>>>
>>> if(1000 > negative_infinite_number):
...   print(f"1000 is greater than {negative_infinite_number}")
...
1000 is greater than -inf
>>>

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Author Info:

Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.