Python bin() Function With Examples

In this article, we will learn about python bin() function with examples.

Getting Started

bin() function in python is used to convert an integer into equivalent binary value. For example,

If we take 2 as integer and use it with bin() function, we will get 10. 10 is equivalent binary of 2.

Similarly,
For 3, it’s 11
For 4, it’s 100
and so on for other integer value.

Syntax of bin() Function

Syntax of python bin() Function –

 
bin(INT_VALUE)

Where,
INT_VALUE is an integer value.

Parameter of bin() Function

As discussed above,
bin() Function accepts only one argument –

  • INT_VALUE: Argument passed to bin() Function must be integer value.

Return Value of bin() Function

bin() Function returns binary equivalent of passed integer as argument.

Examples of bin() Function

Now, Let’s see some examples of bin() Function in python –

Example 1: Converting an integer into binary using bin() Function

 
# Declare variable
num = 32
 
# Prints binary equivalent of num
print(bin(num))

Output:

 
0b100000

Here,
0b represents binary.
binary equivalent of 32 is 100000.

Visit to learn more ways to print integer

Please note that result includes 0b as well. So, we if want to get only binary equivalent value, we can define another function as shown below –

Example 2: Using user-defined Function with bin()

 
def ConvertBinary(n):
    num = bin(n)
 
    # Removes "0b" prefix
    num1 = num[2:]
    return num1
 
print("The binary representation of 32 is : ", end="")
print(ConvertBinary(32))

Output:

 
The binary representation of 32 is : 100000

Now, we got the desired result and printed it using print() method.

Now, what if we need to use bin() function with object ?

Example 3: Using bin() Function with Class

Let’s take an example where we want to bin() function with non-integer object –

 
class Student:
    class8 = 10
    class9 = 20
    class10 = 2
    
    def func():
        return class8 + class9 + class10
        
print('Equivalent Binary of Student is:', bin(Student())) 

Output:

 
TypeError: 'Student' object cannot be interpreted as an integer

We got this error because Student() is not an integer.

To fix this issue, we need to use __index()__ Function.

Example 4: Using bin() Function with __index()__ Function

 
class Student:
    class8 = 10
    class9 = 20
    class10 = 2
    
    def __index__(self):
        return self.class8 + self.class9 + self.class10
        
print('Equivalent Binary of Student is:', bin(Student())) 

Output:

 
Equivalent Binary of Student is: 0b100000 

self.class8 + self.class9 + self.class10 is equal to 32. Binary of 32 is 100000. Hence, output is 0b100000.

Learn more at official doc.

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