Question

我需要从xlwt模块导入类，因此我尝试了获取错误。为什么这样？你能指导我吗？

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Matty>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> from xlwt import easyxf
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named xlwt
>>> from xlwt import Workbook
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named xlwt
>>>

修改

C:\Users\matt>easy_install xlwt
Searching for xlwt
Best match: xlwt 0.7.4
Processing xlwt-0.7.4-py2.7.egg
Adding xlwt 0.7.4 to easy-install.pth file

Using c:\python27\lib\site-packages\xlwt-0.7.4-py2.7.egg
Processing dependencies for xlwt
Finished processing dependencies for xlwt

C:\Users\matt>

EDIT1

根据@Ab的评论，它有效。

但为什么我需要导入sys？

C:\Users\matt>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', 'C:\\Python27\\lib\\site-packages\\beautifulsoup4-4.1.3-py2.7.egg', 'C:\\Py
thon27\\lib\\site-packages\\selenium-2.28.0-py2.7.egg', 'C:\\Python27\\lib\\site
-packages\\xlwt-0.7.4-py2.7.egg', 'C:\\Windows\\system32\\python27.zip', 'C:\\Py
thon27\\DLLs', 'C:\\Python27\\lib', 'C:\\Python27\\lib\\plat-win', 'C:\\Python27
\\lib\\lib-tk', 'C:\\Python27', 'C:\\Python27\\lib\\site-packages']
>>> from xlwt import easyxf
>>> from xlwt import Workbook
>>> from xlwt import *
>>>

Answer 1

您可以运行import sys ; sys.path并查看路径列表中是否有c:\python27\lib\site-packages\。如果是，则再次尝试运行from xlwt import easyxf

Answer 2

您显然没有安装xlwt，或者Python不知道您这样做。

尝试运行pip install xlwt。

您还可以查看xlwt代码的物理位置，然后将该文件目录添加到PYTHONPATH，以便Python知道在那里查找模块。

这可能是因为您从未安装virtualenv的{{1}}运行代码。

尝试使用时，在Python 2.7中获取导入错误

2 个答案: