Python int() Function

The int() function in Python is used when we need to convert any specified value into an integer value. For example:

x = 12.43
print(int(x))
x = "132"
print(int(x))

The output will be:

12
132

Python int() Function Syntax

The syntax of int() function in Python, is:

int(val, base)

where val refers to a number or a string that has to be converted into an integer object. Whereas base refers to the base of returned number.

Note - The default value of val is 0, whereas the default value of base is 10. The default value of base is 10, indicates that the returned value will be in decimal number system.

Python int() Function Example

Here is an example of int() function in Python:

print(int('101', 2))
print(int('71', 8))
print(int('123', 10))
print(int('A', 16))

The output will be:

5
57
123
10

because the:

  • binary equivalent of 5 is 101
  • octal equivalent of 57 is 71
  • decimal equivalent of 123 is 123
  • hexadecimal equivalent of 10 is A

Note - Providing no parameter to int(), gives 0.

Note - Most of the time, the int() function is used to get integer input using int(input()). Because input() function treats every user input as of String type, by default.

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