python第三方库——xlrd和xlwt操作Excel文件学习
1安装：
C:\Users\Lenovo>pip install xlwt
Collecting xlwt
Downloading https://files.pythonhosted.org/packages/44/48/def306413b25c3d01753603b1a222a011b8621aed27cd7f89cbc27e6b0f4/xlwt-1.3.0-py2.py3-none-any.whl (99kB)
100% |████████████████████████████████| 102kB 129kB/s
Installing collected packages: xlwt
Successfully installed xlwt-1.3.0