在OS X上带有bson的Flask ImportError

本文介绍了在OS X上带有bson的Flask ImportError的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我无法使用Flask，MongoDB和Python使一个简单的Hello World应用程序正常工作.尝试从bson模块导入时，应用程序受到轰炸.所有模块都已通过pip成功安装，并且我正在virtualenv中运行，所以我不确定为什么会出现错误:ImportError: cannot import name BSON

I'm having trouble getting a simple Hello World app to work using Flask, MongoDB, and Python. The app is bombing when trying to import from the bson module. All modules were installed successfully via pip and I'm running in a virtualenv, so I'm not sure why I'm getting the error: ImportError: cannot import name BSON

这是我的示例应用代码:

Here is my sample app code:

import os
from flask import Flask
from flask import g
from flask import jsonify
from flask import json
from flask import request
from flask import url_for
from flask import redirect
from flask import render_template
from flask import make_response
import pymongo
from pymongo import Connection
from bson import BSON
from bson import json_util

app = Flask(__name__)

@app.route('/')
def hello():

    connection = Connection()
    # Get your DB
    db = connection.my_database
    # Get your collection
    cars = db.cars
    # Create some objects
    import datetime
    car = {"brand": "Ford",
           "model": "Mustang",
           "date": datetime.datetime.utcnow()}
    # Insert it
    cars.insert(car)
    json_docs = [json.dumps(doc, default=json_util.default) for doc in cars.find()]

    return json_docs


if __name__ == '__main__':
    # Bind to PORT if defined, otherwise default to 5000.
    port = int(os.environ.get('PORT', 5000))
    app.debug = True
    app.run(host='0.0.0.0', port=port)

我不确定如何调试此功能，或者我是否在这里缺少任何内容.

I'm not sure how to go about debugging this or if there's something I'm missing here.

pip freeze的结果:

Flask==0.9
Jinja2==2.6
WTForms==1.0.2
Werkzeug==0.8.3
bson==0.3.3
distribute==0.6.28
mongo==0.2.0
pymongo==2.3
pytz==2012g
wsgiref==0.1.2

Edit2:删除了bson和pymongo，重新运行pip install pymongo.立即完成跟踪:

Removed bson and pymongo, reran pip install pymongo. Complete trace now:

Traceback (most recent call last):
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/flask/app.py", line 1701, in __call__
18:21:20 web.1  |     return self.wsgi_app(environ, start_response)
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/flask/app.py", line 1689, in wsgi_app
18:21:20 web.1  |     response = self.make_response(self.handle_exception(e))
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app
18:21:20 web.1  |     response = self.full_dispatch_request()
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/flask/app.py", line 1361, in full_dispatch_request
18:21:20 web.1  |     response = self.make_response(rv)
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/flask/app.py", line 1450, in make_response
18:21:20 web.1  |     rv = self.response_class.force_type(rv, request.environ)
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/werkzeug/wrappers.py", line 711, in force_type
18:21:20 web.1  |     response = BaseResponse(*_run_wsgi_app(response, environ))
18:21:20 web.1  |   File ".../venv/lib/python2.7/site-packages/werkzeug/test.py", line 818, in run_wsgi_app
18:21:20 web.1  |     app_iter = app(environ, start_response)
18:21:20 web.1  | TypeError: 'list' object is not callable

bson

在OS X上带有bson的Flask ImportError

问题描述

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