一、安装xlrd和xlwt功能模块步骤
1.使用python -V查看python的版本号，并查看python安装环境，是否安装成功；
2.可以通过官网（python官网：https://pypi.python.org/pypi）或者其他手段获取到功能模块的安装程序包；
3.将程序包解压，并放在python->Lib文件下
4.在cmd命令窗口中，进入E:\Python\Python36\Lib目录下，分别进入xlrd和xlwt的目录下，执行python setup.py install命令；
5.在python工具中，执行import xlwt3和import xlrd，运行结果没有报错，则证明安装成功；
二、在使用xlwt时，报错的解决方法
1.导入xlwt3报错：ValueError: cannot use LOCALE flag with a str pattern
详细错误信息：
Traceback (most recent call last):
File "F:/1/1", line 1, in <module>
import xlwt3
File "E:\Python\Python36\lib\site-packages\xlwt3\__init__.py", line 3, in <module>
from .workbook import Workbook
File "E:\Python\Python36\lib\site-packages\xlwt3\workbook.py", line 5, in <module>
from .worksheet import Worksheet
File "E:\Python\Python36\lib\site-packages\xlwt3\worksheet.py", line 7, in <module>
from .row import Row
File "E:\Python\Python36\lib\site-packages\xlwt3\row.py", line 8, in <module>
from . import formula
File "E:\Python\Python36\lib\site-packages\xlwt3\formula.py", line 1, in <module>
from .excel import formulaparser, formulalexer
File "E:\Python\Python36\lib\site-packages\xlwt3\excel\formulalexer.py", line 52, in <module>
VERBOSE+LOCALE+IGNORECASE)
File "E:\Python\Python36\lib\re.py", line 233, in compile
return _compile(pattern, flags)
File "E:\Python\Python36\lib\re.py", line 301, in _compile
p = sre_compile.compile(pattern, flags)
File "E:\Python\Python36\lib\sre_compile.py", line 562, in compile
p = sre_parse.parse(p, flags)
File "E:\Python\Python36\lib\sre_parse.py", line 866, in parse
p.pattern.flags = fix_flags(str, p.pattern.flags)
File "E:\Python\Python36\lib\sre_parse.py", line 833, in fix_flags
raise ValueError("cannot use LOCALE flag with a str pattern")
ValueError: cannot use LOCALE flag with a str pattern
解决方法：
进入E:\Python\Python36\Lib\sre_parse.py文件下，修改该代码：
if flags & SRE_FLAG_LOCALE:
pass #stone20170712 raise ValueError("cannot use LOCALE flag with a str pattern")
执行import xlwt3，结果OK
2.导入xlwt3报错：ValueError: ‘__init__‘ in __slots__ conflicts with class variable
详细错误信息：
Traceback (most recent call last):
File "F:/1/1", line 1, in <module>
import xlwt3
File "E:\Python\Python36\lib\site-packages\xlwt3\__init__.py", line 3, in <module>
from .workbook import Workbook
File "E:\Python\Python36\lib\site-packages\xlwt3\workbook.py", line 5, in <module>
from .worksheet import Worksheet
File "E:\Python\Python36\lib\site-packages\xlwt3\worksheet.py", line 7, in <module>
from .row import Row
File "E:\Python\Python36\lib\site-packages\xlwt3\row.py", line 8, in <module>
from . import formula
File "E:\Python\Python36\lib\site-packages\xlwt3\formula.py", line 6, in <module>
class Formula(object):
ValueError: ‘__init__‘ in __slots__ conflicts with class variable
解决方法：
进入E:\Python\Python36\Lib\site-packages\xlwt3\formula.py文件下，将其中
__slots__ = [ "__init__","__s", "__parser", "__sheet_refs", "__xcall_refs"]
修改为：
__slots__ = [ "__s", "__parser", "__sheet_refs", "__xcall_refs"]
执行import xlwt3，结果OK