python3:有条件地从两个包中的一个导入

Question

我有两个"api兼容"的软件包fast和slow;彼此之间。如果fast可用，我想从它导入，否则从slow导入。我当前的工作解决方案是

import imp
try:
imp.find_module('fast')
from fast.UtilityFunctions import UtilityFunctions
from fast.Utilities.Log import Log
from fast.model.device_driver import DriverModel
...
except ImportError:
from slow.UtilityFuntions import UtilityFunctions
...
# normal code

有更好的写法吗?我可以消除上面的复制粘贴工作吗?也就是说，这个伪代码的python等价是什么?

import imp
try:
imp.find_module('fast')
alias found=fast
except ImportError
alias found=slow
from found.UtilityFuntions import UtilityFunctions
...

Answer 1

为什么不直接导入这些模块呢?

try:
import fast as found
except ImportError:
import slow as found
from found.UtilityFuntions import UtilityFunctions

Answer 2

try:
import some_specific_module as module
except ImportError:
import other_module

试试这段代码!