pymongo 应该有一个模块 objectid 吗？
Should pymongo have a module objectid?
精简版
全新安装 flask 和 mongoalchemy 后两行：
from flask import Flask
from flask.ext.mongoalchemy import MongoAlchemy
失败：
ImportError: No module named objectid
我应该看哪里？
详情
在 El Capitan 之后：
> sudo port install py27-flask py27-flask-mongoalchemy
我确认 MacPorts 安装的版本：
> port installed | grep 'flask\|mongo'
py27-flask @0.10.1_1 (active)
py27-flask-mongoalchemy @0.5.3_0 (active)
py27-flask-script @2.0.5_0 (active)
py27-mongoalchemy @0.11_0 (active)
py27-pymongo @3.2.2_0 (active)
我是 运行 MacPorts Python:
> which python
/opt/local/bin/python
并且它是 2.7 分支上的最新版本：
> python --version
Python 2.7.11
但是 this 页的第二行：
from flask import Flask
from flask.ext.mongoalchemy import MongoAlchemy
失败：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/flask/exthook.py", line 81, in load_module
reraise(exc_type, exc_value, tb.tb_next)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/flaskext/mongoalchemy/__init__.py", line 14, in <module>
from mongoalchemy import document, exceptions, fields, session, query
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/mongoalchemy/document.py", line 45, in <module>
from mongoalchemy.fields import ObjectIdField, Field, BadValueException, SCALAR_MODIFIERS
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/mongoalchemy/fields.py", line 60, in <module>
from pymongo.objectid import ObjectId
ImportError: No module named objectid
pymongo 应该有一个模块 objectid 吗？
之前对类似问题的讨论 (, 2, 3, 4) 无关紧要。
编辑
嗯... mongodb 本身并未安装为 flask-mongoalchemy 的依赖项。好的，让我们手动完成：
> port list | grep mongodb
mongodb @3.2.4 databases/mongodb
> sudo port install mongodb
这没用。弹出同样的错误。
你有一个古老的 mongoalchemy。
查看提交 "Use bson package instead of deprecated (then removed) pymongo ones"：
https://github.com/jeffjenkins/MongoAlchemy/commit/9152d83a8515fd557b2d90fb0059fa42a24730fe
也许你不应该相信 python 模块上的 macports。
编辑：
我看到 macports 不再维护该端口：
https://www.macports.org/ports.php?by=name&substr=mongoalchemy
精简版
全新安装 flask 和 mongoalchemy 后两行：
from flask import Flask
from flask.ext.mongoalchemy import MongoAlchemy
失败：
ImportError: No module named objectid
我应该看哪里？
详情
在 El Capitan 之后：
> sudo port install py27-flask py27-flask-mongoalchemy
我确认 MacPorts 安装的版本：
> port installed | grep 'flask\|mongo'
py27-flask @0.10.1_1 (active)
py27-flask-mongoalchemy @0.5.3_0 (active)
py27-flask-script @2.0.5_0 (active)
py27-mongoalchemy @0.11_0 (active)
py27-pymongo @3.2.2_0 (active)
我是 运行 MacPorts Python:
> which python
/opt/local/bin/python
并且它是 2.7 分支上的最新版本：
> python --version
Python 2.7.11
但是 this 页的第二行：
from flask import Flask
from flask.ext.mongoalchemy import MongoAlchemy
失败：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/flask/exthook.py", line 81, in load_module
reraise(exc_type, exc_value, tb.tb_next)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/flaskext/mongoalchemy/__init__.py", line 14, in <module>
from mongoalchemy import document, exceptions, fields, session, query
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/mongoalchemy/document.py", line 45, in <module>
from mongoalchemy.fields import ObjectIdField, Field, BadValueException, SCALAR_MODIFIERS
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/mongoalchemy/fields.py", line 60, in <module>
from pymongo.objectid import ObjectId
ImportError: No module named objectid
pymongo 应该有一个模块 objectid 吗？
之前对类似问题的讨论 (
编辑
嗯... mongodb 本身并未安装为 flask-mongoalchemy 的依赖项。好的，让我们手动完成：
> port list | grep mongodb
mongodb @3.2.4 databases/mongodb
> sudo port install mongodb
这没用。弹出同样的错误。
你有一个古老的 mongoalchemy。
查看提交 "Use bson package instead of deprecated (then removed) pymongo ones"： https://github.com/jeffjenkins/MongoAlchemy/commit/9152d83a8515fd557b2d90fb0059fa42a24730fe
也许你不应该相信 python 模块上的 macports。
编辑：
我看到 macports 不再维护该端口： https://www.macports.org/ports.php?by=name&substr=mongoalchemy