Python oct() Function
Python oct() function takes an integer and returns the octal representation in a string format. In this article, we will see how we can convert an integer to an octal in Python.
Python oct() Function Syntax
Syntax : oct(x)
Parameters:
- x – Must be an integer number and can be in either binary, decimal or hexadecimal format.
Returns : octal representation of the value.
Errors and Exceptions:
- TypeError : Raises TypeError when anything other than integer type constants are passed as parameters.
How oct() Function in Python works?
In this example, we are using oct() to convert an integer to octal in Python. Like we have returned the octal representation of 10 here.
Python3
print ( oct ( 10 )) |
0o12
Example 1: Converting Binary and Hexadecimal Value Into Octal Value
In this example, we are using oct() to convert numbers from different bases to octal.
Python3
# Binary to Octal print ( oct ( 0b110 )) # Hexa to octal print ( oct ( 0XB )) |
0o6 0o13
Example 2: Python oct() for custom objects
Implementing __int__() magic method to support octal conversion in Math class.
Python3
class Math: num = 76 def __index__( self ): return self .num def __int__( self ): return self .num obj = Math() print ( oct (obj)) |
0o114
Example 3: Converting Binary and Hexadecimal Value Into Octal Value Without “Oo” Prefix
To convert a binary or hexadecimal value to an octal representation using Python and remove the “0o” prefix, you can use the oct()
function along with string slicing.
Python3
a = 10 result = oct ( 10 )[ 2 :] print (result) |
12
Example 4: Demonstrate TypeError in oct() method
Python doesn’t have anything like float.oct() to directly convert a floating type constant to its octal representation. Conversion of a floating-point value to it’s octal is done manually.
Python3
# Python3 program demonstrating TypeError print ( "The Octal representation of 29.5 is " + oct ( 29.5 )) |
Output
Traceback (most recent call last):
File "/home/5bf02b72de26687389763e9133669972.py", line 3, in
print("The Octal representation of 29.5 is "+oct(29.5))
TypeError: 'float' object cannot be interpreted as an integer
Applications: Python oct() is used in all types of standard conversion. For example, Conversion from decimal to octal, binary to octal, hexadecimal to octal forms respectively.
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