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我在Windows 7 64位上使用python 2.7.11与py2exe 0.6.9,运行.exe
文件后出现以下错误。python:py2exe cryptography多后端无法初始化,没有后端
ValueError: Multibackend cannot be initialized with no backends.
If you are seeing this error when trying to use
default_backend()
please try uninstalling and reinstalling cryptography.