Python oct() usage and example

Python built-in functions

The oct() function takes an integer and returns its octal representation.

The syntax of oct() is:

oct(x)

oct() parameter

The oct() function takes a single parameterx.

The parameter can be:

• Integer (binary, decimal, or hexadecimal)

• If it is not an integer, then implement __index__() to return an integer

oct() return value

The oct() function returns an octal string from the given integer.

Example1：How does oct() work in Python?

# Decimal to octal
10) is:10))
# Binary to octal
print('oct(0b101) is:101))
# Hexadecimal to octal
print('oct(0XA) is:', oct(0XA))

Output result

oct(10) is: 0o12
oct(0b101) is: 0o5
oct(0XA) is: 0o12

Example2：Custom object's oct()

class Person:
　　　　age =　23
　　　　def __index__(self):
　　　　　　　　return self.age
　　　　def __int__(self):
　　　　　　　　return self.age
person = Person()
print('oct:', oct(person))

Output result

oct: 0o27

Here, the Person class implements __index__() and __int__(). That's why we can use oct() on the Person object.

Note:For compatibility, it is recommended to use the same output implementation for int() and index().

Python built-in functions