nini3816的博客

stack： 二维压缩为一维unstack：一维展开为二维stack和unstack默认操作为最内层，可以用level参数指定操作层.stack和unstack默认旋转轴的级别将会成果结果中的最低级别（最内层）stack转换dataframe时，若只有一层列索引则转换后的类型为series，否则为dataframe...

t1=datetime(2018,4,13)t2=datetime.now()print(type(t2-t1))print("seconds",(t2-t1).seconds)print("days",(t2-t1).days)# print("hour",(t2-t1).hour)#没有hour,minute

有两种写法df=df.drop(index=df.index)或df.drop(df.index, inplace=True)这两种都可以

import pandas as pdimport numpy as npdf = pd.DataFrame(np.arange(12).reshape(3,4), columns=['A', 'B', 'C', 'D'])print("df",df)# df.drop([-1],inplace=True)df.drop([len(df)-1],inplace=True)print...

1 .datetime转1970年秒数import time,datetimetimeDateStr="2014-07-29 00:00:00"time1=datetime.datetime.strptime(timeDateStr,"%Y-%m-%d %H:%M:%S")secondsFrom1970=time.mktime(time1.timetuple())2.1970年秒数转date...

报错Error in sitecustomize; set PYTHONVERBOSE for traceback: NameError: name 'modules_list' is not ...原文链接:https://www.jianshu.com/p/b1ed42918380Error in sitecustomize; set PYTHONVERBOSE for trac...