Question

我使用pip3

成功安装了pymongo

Aleeshas-MacBook-Air:project 2 aleesha$ sudo pip3 install pymongo
The directory '/Users/aleesha/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/aleesha/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pymongo
  Downloading pymongo-3.4.0-cp35-cp35m-macosx_10_6_intel.whl (294kB)
    100% |████████████████████████████████| 296kB 730kB/s 
Installing collected packages: pymongo
Successfully installed pymongo-3.4.0
Aleeshas-MacBook-Air:project 2 aleesha$

然后我在python中编写了一个写入MongoDB的测试脚本。但是当我执行它时，我收到以下错误：

Aleeshas-MacBook-Air:project 2 aleesha$ python pythonScript.py 
Traceback (most recent call last):
  File "pythonScript.py", line 5, in <module>
    from pymongo import MongoClient
ImportError: No module named pymongo
Aleeshas-MacBook-Air:project 2 aleesha$

Python版本：Python 3.5.2

这就是路径的样子：

 >>> import sys
    >>> sys.path
    ['', '/Users/aleesha/Documents', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python35.zip', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/plat-darwin', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages']
>>> sys.version
'3.5.2 (v3.5.2:4def2a2901a5, Jun 26 2016, 10:47:25) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]'
>>>

在谷歌搜索。在stackoverflow上找到这个问题：ImportError: No module named 'pymongo'然后指向stackoverflow上的另一个页面：failure to import pymongo ubuntu

sudo pip uninstall pymongo ==> Succesfully uninstalled
sudo pip uninstall bson ==> Cannot uninstall requirement bson, not installed
sudo apt-get remove python-bson ==> sudo: apt-get: command not found
sudo apt-get remove python-gridfs    # not sure if it's necessary ==> sudo: apt-get: command not found
sudo pip install pymongo -U ==> successfully installed pymongo

然而即使在此之后，我也面临同样的问题。我无法导入pymongo模块。

编辑：我正在尝试更多的事情来解决这个问题。使用IDLE我可以导入pymongo并轻松地将记录插入MongoDB。

>>> from pymongo import MongoClient
>>> client = MongoClient()
>>> db = client.kmp
>>> db.KMP_DATA.insert_one({"seq" : 1,"data" : "ABCD"})
<pymongo.results.InsertOneResult object at 0x1058c8828>
>>>

但是我仍然无法从python脚本中导入它。

Answer 1

“pip”或“pip3”与“python”或“python3”的环境不同是一个常见问题。确保您使用与运行相同的环境进行安装：

python -m pip install pymongo

或者：

python3 -m pip install pymongo

Answer 2

python路径 macOS有自己的python。有时我们会从brew或anaconda安装另一个python。所以首先您应该使用哪个python。

which python
which python3
which pip
which pip3

命令python，python3，pip和pip3可以是路径，别名或软链接。

如果是路径，您会找到它；如果是别名或软链接，则应使用ls -l xxx查找python的真实路径

示例：

[morningtzh@mbajiushigelaji:~]
% which python
python: aliased to /Users/morningtzh/anaconda/bin/python3
[morningtzh@mbajiushigelaji:~]
% ls -l /Users/morningtzh/anaconda/bin/python3
lrwxr-xr-x  1 morningtzh  staff  9  1  8 14:41 /Users/morningtzh/anaconda/bin/python3 -> python3.6
[morningtzh@mbajiushigelaji:~]
% ls -l /Users/morningtzh/anaconda/bin/python3.6
-rwxrwxr-x  1 morningtzh  staff  3937816  1  8 14:41 /Users/morningtzh/anaconda/bin/python3.6
[morningtzh@mbajiushigelaji:~]
% which pip3
/Users/morningtzh/anaconda/bin/pip3
[morningtzh@mbajiushigelaji:~]
% ls -l /Users/morningtzh/anaconda/bin/pip3
-rwxr-xr-x  1 morningtzh  staff  237 10 16 16:16 /Users/morningtzh/anaconda/bin/pip3

该示例显示了我的python和pip是一对情侣~~~

我在使用虚拟环境

以相同的方式找到真实路径。

pymongo：ImportError：没有名为pymongo的模块

2 个答案: