# Python int()

The `int()` function converts a number or a string to its equivalent integer.

### Example

``````# converting a floating-point number to its equivalent integer

result = int(9.9)
print('int(9.9):', result)    # int(9.9): 9
``````

## int() Syntax

The syntax of the `int()` method is:

``int(value, base [optional])``

## int() Parameters

`int()` method takes two parameters:

• value - any numeric-string, bytes-like object or a number
• base [optional] - the number system that the value is currently in

## int() Return Value

The `int()` method returns:

• integer portion of the number - for a single argument value (any number)
• 0 - for no arguments
• integer representation of a number with a given base (0, 2 ,8 ,10,16)

## Example 1: Python int() with a Single Argument

``````# int() with an integer value
print("int(123) is:", int(123))

# int() with a floating point value
print("int(123.23) is:", int(123.23))

# int() with a numeric-string value
print("int('123') is:", int("123"))``````

Output

```int(123) is: 123
int(123.23) is: 123
int('123') is: 123```

In the above example, we have returned the integer equivalent of an integer number, a float number and a string value.

## Example 2: int() with Two Arguments

``````# converting a string (that is in binary format) to integer
print("For 0b101, int is:", int("0b101", 2))

# converting a string (that is in octal format) to integer
print("For 0o16, int is:", int("0o16", 8))

# converting a string (that is in hexadecimal format) to integer
print("For 0xA, int is:", int("0xA", 16))``````

Output

```For 0b101, int is: 5
For 0o16, int is: 14
For 0xA, int is: 10```

## Example 3: int() for custom objects

Even if an object isn't a number, we can still convert it to an integer object.

We can do this easily by overriding `__index__()` and `__int__()` methods of the class to return a number.

The two methods are identical. The newer version of Python uses the `__index__()` method.

``````class Person:
age = 23

def __index__(self):
return self.age

# def __int__(self):
#     return self.age

person = Person()

# int() method with a non integer object person
print("int(person) is:", int(person))``````

Output

`int(person) is: 23`

In the above example, the class `Person` is not of the integer type.

But we can still return the age variable (which is an integer) using the `int()` method.