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Use Python for data analysis: This book is a detailed version of Python's pandas package. Learn this to master some basic pandas commands. However, this is not the point, because pandas is too slow to produce a large amount of data and may collapse (I don't know if there is any improvement now-!) The point is, through studying this book, I feel a little about the data operation and am familiar with the basic data operation process. All the operations in this book can be replaced by native Python, and Pandas package is not needed. Finding feelings is very important.问知老太爷去刘家了——今日是黄瓜下大定的日子，他便径直到二门前，说找小姐。Looking at the INPUT chain in the filter table again, we find that the rule has been added. In iptables, the action is called "target", so the action corresponding to the taget field in the above figure is DROP.国际刑警联合泰国军队，火烧金三角中断毒品来源，黑帮、毒臬联手报复，派人潜入刑警档案室，盗取刑警档案，刑警每出动一人，便即遭暗杀，黑帮为补偿损失，进行一名为“黑色十字”计划，刑警苦无良策下，得美国毒品调查可资助，雇请织协助对抗，惟是黑帮人强马壮，织只能智取抗敌，一场海、路、空大决战便即时爆发。