考虑
try:
import someProprietaryModule
except ImportError:
raise ImportError('It appears that <someProprietaryModule> is not installed...')
运行时,如果未安装SomepropertyModule,则会看到:
(traceback data)
ImportError: unknown module: someProprietaryModule
During handling of the above exception, another exception occurred:
(traceback data)
ImportError: It appears that <someProprietaryModule> is not installed...
也许我不想"在处理上述异常时……"行(及其上方的行)显示.我可以这样做:
_moduleInstalled = True
try:
import someProprietaryModule
except ImportError:
_moduleInstalled = False
if not _moduleInstalled:
raise ImportError('It appears that <someProprietaryModule> is not installed...')
但这感觉有点像黑客.我还能做什么?