关于C数据类型的python按位运算？

Question

是否可以在Python中对C数据类型执行按位操作？

Python 2.7.1+ (r271:86832, Apr 11 2011, 18:13:53) 
[GCC 4.5.2] on linux2 
Type "help", "copyright", "credits" or "license" for more information. 
>>> from ctypes import c_uint8 
>>> foo = c_uint8(4) 
>>> foo << 1 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
TypeError: unsupported operand type(s) for <<: 'c_ubyte' and 'int' 
>>> 

Answer 1

尝试foo.value << 1

或更新FOO，

foo.value <<= 1 

Answer 2

这工作，但它不是在C层次进行：

foo.value << 1 

Answer 3

from ctypes import c_uint8 
foo = c_uint8(4) 
print foo.value << 1 

会根据需要打印8。若要更改foo，请使用

foo.value <<= 1