hex(x)

Returns test

REMARKS

* No prefix required - Core
* Convert an integer number to a lowercase hexadecimal string prefixed with "0x". If x is not a Python int object, it has to define an __index__() method that returns an integer.
* If you want to convert an integer number to an uppercase or lower hexadecimal string with prefix or not, you can use either of the following ways:
* See also format() for more information.
* See also int() for converting a hexadecimal string to an integer using a base of 16.

>>> hex(255) 
'0xff'
>>> hex(-42) 
'-0x2a'

>>> '%#x' % 255, '%x' % 255, '%X' % 255  
('0xff', 'ff', 'FF')  
>>> format(255, '#x'), format(255, 'x'), format(255, 'X')  
('0xff', 'ff', 'FF')  
>>> f'{255:#x}', f'{255:x}', f'{255:X}'  
('0xff', 'ff', 'FF')