Pandas-Cookbook 时间戳处理方式

技术  /  管理员 发布于 8年前   213

我就废话不多说，直接上代码吧！

# -*-coding:utf-8-*-# by kevinelstri# 2017.2.17# ---------------------# Chapter 8 - How to deal with timestamps.ipynb# ---------------------import pandas as pd'''  8.1 Parsing Unix timestamps'''popcon = pd.read_csv('../data/popularity-contest', sep=' ')# print popcon.head()popcon.columns = ['atime', 'ctime', 'package-name', 'mru-program', 'tag']# print popcon[:5]print popcon['atime'].dtypepopcon['atime'] = popcon['atime'].astype(int)# print popcon['atime'][:5]# popcon['ctime'] = popcon['ctime'].astype(int)popcon['atime'] = pd.to_datetime(popcon['atime'])# popcon['ctime'] = pd.to_datetime(popcon['ctime'], unit='s')# print popcon['atime'][:5]popcon = popcon[popcon['atime'] > '1970-01-01']nonlibraries = popcon[~popcon['package-name'].str.contains('lib')]nonlibraries.sort('ctime', ascending=False)[:10]

以上这篇Pandas-Cookbook 时间戳处理方式就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。