在python 3中等效于`array.array（'c'）`

Question

My old code with python 2 has

import array

buf = array.array('c')

In python 3, this chunk of code gives error

E ValueError: bad typecode (must be b, B, u, h, H, i, I, l, L, q, Q, f or d)

What would be the equivalent in python 3? How to make the code work for both python 2 and 3?

Answer 1

Just check the manual: https://docs.python.org/3/library/array.html

'b' signed char
'B' unsigned char

So you'll probably need B (but we can't be sure - it depends on the rest of your code, I guess). This is also compatible with Python 2.x.