python项目中的Pymongo问题

我已经安装了pymongo，当我开始一个新项目时，我会写

import pymongo

Python向我显示了下一个错误

Python版本：

3.4.3

错误代码

Traceback (most recent call last):
  File "TestMongoDB.py", line 3, in <module>
    import pymongo
ImportError: No module named 'pymongo'

# Include mongo library.
import pymongo

# Include sys library.
import sys

print (sys.path)

['/Users/ismaelmoral/python/TestMongoDB', '/Library/Python/2.7/site-packages/pip-6.1.1-py2.7.egg', '/Library/Python/2.7/site-packages/pymongo-3.0rc1-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

我正试图用这个命令通过终端执行我的python代码

python3testmongodb.py

输入

python -c "import pymongo; import sys; print(pymongo.version); print(pymongo.has_c()); print (sys.path)"

3.0rc1
True
['', '/Library/Python/2.7/site-packages/pip-6.1.1-py2.7.egg', '/Library/Python/2.7/site-packages/pymongo-3.0rc1-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

输出

python -c "import pymongo; import sys; print(pymongo.version); print(pymongo.has_c()); print (sys.path)"

3.0rc1
True
['', '/Library/Python/2.7/site-packages/pip-6.1.1-py2.7.egg', '/Library/Python/2.7/site-packages/pymongo-3.0rc1-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

输入python代码

Traceback (most recent call last):
  File "TestMongoDB.py", line 3, in <module>
    import pymongo
ImportError: No module named 'pymongo'

# Include mongo library.
import pymongo

# Include sys library.
import sys

print (sys.path)

['/Users/ismaelmoral/python/TestMongoDB', '/Library/Python/2.7/site-packages/pip-6.1.1-py2.7.egg', '/Library/Python/2.7/site-packages/pymongo-3.0rc1-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

输出python代码

Traceback (most recent call last):
  File "TestMongoDB.py", line 3, in <module>
    import pymongo
ImportError: No module named 'pymongo'

# Include mongo library.
import pymongo

# Include sys library.
import sys

print (sys.path)

['/Users/ismaelmoral/python/TestMongoDB', '/Library/Python/2.7/site-packages/pip-6.1.1-py2.7.egg', '/Library/Python/2.7/site-packages/pymongo-3.0rc1-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

---

看起来您已经安装了pymongo for Python2，但您正在尝试使用Python3运行它。您需要为Python3安装它

您可以看到，有效的命令使用

python

，而失败的命令使用

python3

。您可以通过检查此功能是否有效来验证这是否是问题：

python testMongoDB.py

但这失败了：

python3 -c "import pymongo; print(pymongo.version); print(pymongo.has_c())"

解决方案 我假设您使用

pip

安装软件包。对于Python3安装，您需要使用

pip

，而不是Python2默认路径上的安装

请转到目录

\root\dir\for\Python3X\Scripts

。运行您在那里找到的

pip

，例如

/pip install pymongo

，这将为Python 3安装它

---

如果该解决方案不能满足您的需要，请查看。

Add

import sys；将sys.path

打印到

TestMongoDB.py

和

python-c…

。输出是什么？我更新了问题info@ThePavoIC。在导入pymongo之前，也将其添加到

TestMongoDB.py

中。是否安装了mongo db？它是哪个版本？看起来您在Python2中安装了pymongo，但在python3上运行了脚本