Maximum integer in Python
This tutorial will discuss the maximum integer value in different versions of Python and how we can get it.
In Python 2, integers and long integers are different data types. The maximum value of an integer is 2 31 -1. If the value exceeds the limit, the data type of the variable is automatically switched to a long integer without causing an exception. Once the data type of a variable is switched to a long data type, it can be the largest data type that the machine can store, which means that in Python 2, long has no explicit limit.
In Python 3, we have not separated integer and long data types, which means that the variable data type will not be switched after exceeding the limit of 2 31 - 1. In short, integers in Python 3 work the same way as long integers in Python 2 and can have values equal to the maximum value that the computer can store.
sysGet the maximum integer value
in Python using the module
As we have discussed above, in Python 3, integers have no limit or maximum value, but in Python 2, integers have a limit, beyond which the data type of the variable switches to the long data type.
We can sys.maxintget the maximum integer value in Python 2, which is equal to 2 31 - 1, by using . The following sample code demonstrates how to sys.maxintget the maximum integer value in Python 2 using .
import sys
print(sys.maxint)
Output:
9223372036854775807
In Python 3, sys.maxintthere is no such thing as the integer data type has no limit or maximum value. However, we can use sys.maxsizeto get the maximum value of the type in Py2 and 3. Py_ssize_tThis is also the maximum size that lists, strings, dictionaries, and similar container types can have.
The following example code demonstrates how to get the maximum value of a container type in Python.
import sys
print(sys.maxsize)
If we need to get the maximum or minimum value of an integer for use in a conditional check, we can use float('inf')and float('-inf')to get positive and negative infinity in Python.
Sample code:
print(float("inf"))
print(float("-inf"))
Output:
inf
-inf
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