Table of Contents
The int() method returns an integer object from any number or string.
The syntax of int()
method is:
int(x=0, base=10)
1. int() Parameters
int()
method takes two arguments:
- x – Number or string to be converted to integer object.
The default argument iszero
. - base – Base of the number in x.
Can be 0 (code literal) or 2-36.
2. Return value from int()
int()
method returns:
- an integer object from the given number or string treats default base as 10
- (No parameters) returns 0
- (If base given) treats the string in the given base (0, 2, 8, 10, 16)
3. Example 1: How int() works in Python?
# integer print("int(123) is:", int(123)) # float print("int(123.23) is:", int(123.23)) # string print("int('123') is:", int('123'))
Output
int(123) is: 123 int(123.23) is: 123 int('123') is: 123
4. Example 2: How int() works for decimal, octal and hexadecimal?
# binary 0b or 0B print("For 1010, int is:", int('1010', 2)) print("For 0b1010, int is:", int('0b1010', 2)) # octal 0o or 0O print("For 12, int is:", int('12', 8)) print("For 0o12, int is:", int('0o12', 8)) # hexadecimal print("For A, int is:", int('A', 16)) print("For 0xA, int is:", int('0xA', 16))
Output
For 1010, int is: 10 For 0b1010, int is: 10 For 12, int is: 10 For 0o12, int is: 10 For A, int is: 10 For 0xA, int is: 10
5. Example 3: int() for custom objects
Internally, int()
method calls an object’s __int__()
method.
So, even if an object isn’t a number, you can convert the object into an integer object.
You can do this by overriding __index__()
and __int__()
methods of the class to return a number.
These two methods should return the same value as older versions of Python uses __int__()
, while newer uses __index__()
method.
class Person: age = 23 def __index__(self): return self.age def __int__(self): return self.age person = Person() print('int(person) is:', int(person))
Output
int(person) is: 23
Related posts:
Python sleep()
Python Program to Check Whether a String is Palindrome or Not
Python staticmethod()
Python Deeper Insights into Machine Learning - Sebastian Raschka & David Julian & John Hearty
Python String zfill()
Python Set discard()
Python Machine Learning Eqution Reference - Sebastian Raschka
Python String isupper()
Deep Learning with Python - Francois Chollet
Python Program to Parse a String to a Float or Int
Python globals()
How to get current date and time in Python?
Python List append()
Python Set symmetric_difference()
Python List sort()
Python String isidentifier()
Python String rindex()
Python Dictionary setdefault()
Python String format_map()
Python Package
Python List Comprehension
Python Custom Exceptions
Python String expandtabs()
Python reversed()
Python Program to Differentiate Between type() and isinstance()
Python Program to Find Factorial of Number Using Recursion
Python Tuple index()
Python Dictionary items()
Python __import__()
Python Program to Count the Number of Digits Present In a Number
How to Get Started With Python?
Python classmethod()