The bin() function is used to convert an integer number to a binary string (preceded by “0b”). The binary notation is the representation of integers in base 2, the notation only uses the digits  0 and 1 .

The bin() function takes an integer argument, and returns the corresponding binary representation of the decimal number.

Syntax: 
bin(integer)
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ExampleEdit & Run
print( bin(1) )
print( bin(2) )
print( bin(4) )
print( bin(15) )
print( bin(50) )
print( bin(64) )
 Visualize 
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Output:
0b1
0b10
0b100
0b1111
0b110010
0b1000000
[Finished in 0.010834950953722s]