Pip successfully installed module not found: ImportError: No module named xlwt

Question

My OS: win 10,

installed:

• python 2.7 ( command is python )
• python 3.9.5 ( command is python3 )
• pip, pip3 ( both for python3, seems )

pip command:

c:\>pip3 config list -v
For variant 'global', will try loading 'C:\ProgramData\pip\pip.ini'
For variant 'user', will try loading 'C:\Users\luelue\pip\pip.ini'
For variant 'user', will try loading 'C:\Users\luelue\AppData\Roaming\pip\pip.ini'
For variant 'site', will try loading 'c:\users\luelue\appdata\local\programs\python\python39\pip.ini'

c:\>pip config list -v
For variant 'global', will try loading 'C:\ProgramData\pip\pip.ini'
For variant 'user', will try loading 'C:\Users\luelue\pip\pip.ini'
For variant 'user', will try loading 'C:\Users\luelue\AppData\Roaming\pip\pip.ini'
For variant 'site', will try loading 'c:\users\luelue\appdata\local\programs\python\python39\pip.ini'

I installed xlwt via pip , and I can see it's installed:

c:\>pip install xlwt
Requirement already satisfied: xlwt in c:\users\luelue\appdata\local\programs\python\python39\lib\site-packages\xlwt-1.3.0-py3.9.egg (1.3.0)

However, when I try to import it, got error: No module named xlwt

c:\>python
Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:30:26) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import xlwt
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named xlwt
>>> exit()

Also, I used pip3 install xlwt successfully, but run python3... import xlwt failed. full log:

C:\files\dong_tai_pai_fang_ji_suan\python_code>pip3 install xlwt
Requirement already satisfied: xlwt in c:\users\luelue\appdata\local\programs\python\python39\lib\site-packages\xlwt-1.3.0-py3.9.egg (1.3.0)

C:\files\dong_tai_pai_fang_ji_suan\python_code>python3
Python 3.9.5 (tags/v3.9.5:0a7dcbd, May  3 2021, 17:27:52) [MSC v.1928 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import xlwt
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'xlwt'
>>>

how to resolve this?

should I configure the windows PATH or something for python/pip?

thanks

edit:

maybe I installed multiple python3:

Answer 1

your python version is 2.7 in python console. change to python 3.9 version.

Answer 2

maybe I installed multiple python3

Do python3 -m pip install xlwt , this always install for python3 (python launched when you do python3 in terminal), then it should be possible to import installed module in python3 . If you want to know more about that read Installing Python Modules in docs .

Answer 3

OK at last I find the root cause.

There are 2 versions of python in my PC:

1. version 3.9, this is installed by myself.
2. version 2.7, this is automatically installed by electron-vue

and I believe there are some conflicts between these two version's configuration. ( eg execute path, pip path, etc ) which makes pip install work incorrectly.

solution is quite simple: uninstall all the python version and re-install 3.7, everything goes well!