How do we declare a single byte variable in Python? I would like to achieve the following result represented in C:
unsigned char = 0xFF;
I would like to know if it is possible to declare an 8-bit variable in Python.
Python doesn't differentiate between characters and strings the way C does, nor does it care about int
bit widths. For a single byte, you basically have three choices:
bytes
(or bytearray
) object mychar = b'\\xff'
(or mychar = bytearray(b'\\xff')
)int
that you don't assign values outside range(256)
(or use masking to trim overflow): mychar = 0xff
ctypes
type, eg mychar = ctypes.c_ubyte(0xff)
The final option is largely for dealing with C functions through ctypes
, it's otherwise slow/not Pythonic. Choosing between options 1 and 2 depends on what you're using it for; different use cases call for different approaches (though indexing/iterating the bytes
object would get you the int
values if you need to use both forms).
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