fix issue 261

[gongqingkui]

fix issue 261

X;\venv\lib\site-packages\dotenv\parser.py", line 44, in("string", typing.Text),
AttributeError: module 'typing' has no attribute 'Text'

[coveralls]

Coverage remained the same at 89.806% when pulling 264c51f on gongqingkui:master into e4bbb8a on theskumar:master.

[bbc2]

Sorry I pushed the wrong commit to your branch and that closed this pull request, preventing me from fixing your branch. I opened a new pull request (#267) where I replaced the except Exception by except (ImportError, AttributeError) because I think that's better (otherwise, it could hide unrelated problems). You can let me know what you think.

[gongqingkui]

Yeah,it's a good way to resolve this question.I didn't writed it although I have thinking of it.