Python - Can't import bcrypt in local app engine dev server

Question

I am trying to develop a simple forum site for my udacity assignment. It is not a strict requirement to use the bcrypt for password hashing, but I'd like to do it because I also like to know how to use third party libraries which are not provided by Google.

Following instructions provided here (installing a third-party library), I have created a folder named lib, and installed bcrypt library with following command:

python -m pip install -t lib/ bcrypt

I have the lib folder automatically structred like this:

I also created an appengine_config.py file with following content, as per instructions in above manual:

# appengine_config.py
from google.appengine.ext import vendor

# add lib folder as vendor directory
vendor.add('lib')

At this point, I am unable to import the bcrypt to my scripts. The import commands I tried so far are as follows:

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from lib import bcrypt

ImportError: No module named lib

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import bcrypt

ImportError: No module named bcrypt._bcrypt

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from lib.bcrypt import bcrypt

ImportError: No module named lib.bcrypt

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What am I missing?

Answer 1

As Avinash Raj pointed out, and as already pointed out in referenced manual, one cannot use python libraries with c extensions. So I downloaded the py-bcrypt , it worked like a charm.

For any newbie like me who needs it, here is the steps you have to take:

1. Inside your project folder, create a folder called "lib"
2. Extract the zip downloaded from github above, to the folder 'lib'. Do not use - in your folder name. Name it something like pybcrypt
3. Create the appengine_config.py file, as outlined in here
4. Import the library to your script, like so: from pybcrypt import bcrypt
5. Pat yourself on the back.

Answer 2

这是另一种选择，您需要先设置Wheel 包，然后才能导入bcrypt

pip install wheel

pip install bcrypt

from flask_bcrypt import Bcrypt