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Drop all duplicate rows across multiple columns in Python Pandas
The pandas drop_duplicates function is great for "uniquifying" a dataframe. However, one of the keyword arguments to pass is take_last=True or take_last=False , while I would like to drop all rows which are duplicates across a subset of columns. Is this possible?
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How do I find the stack trace in Visual Studio?
I ask because I couldn't find the stack trace in Visual Studio, while debugging an exception that occurred.
7 Answers
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C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
C#操作XML小结C 操作XML小结。一、简单介绍
using System.Xml;
//初始化一个xml实例
XmlDocument xml=new XmlDocument();
//导入指定xml文件
xml.Load(path);
xml.Load(HttpContext.Current.Server.MapPath("~/file/bookstore.xml"));
//指定一个节点
XmlNode root=xml.Se...
Java Enum Methods - return opposite direction enum
I would like to declare an enum Direction, that has a method that returns the opposite direction (the following is not syntactically correct, i.e, enums cannot be instantiated, but it illustrates my point). Is this possible in Java?
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How do I escape spaces in path for scp copy in Linux?
I'm new to linux, I want to copy a file from remote to local system... now I'm using scp command in linux system.. I have some folders or files names are with spaces, when I try to copy that file, it shows the error message: "No such file or directory"
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How to find common elements from multiple vectors?
Can anyone tell me how to find the common elements from multiple vectors?
3 Answers
3
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How do I combine two data-frames based on two columns? [duplicate]
I know I can use the plyr and its friends to combine dataframes, and merge as well, but so far I don't know how to merge two dataframes with multiple columns based on 2 columns?
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PhpCms v9 Tag url静态化全攻略 兼容\"+\",\"#\"等特殊字符 - 更多技术 - ...
PhpCms v9 Tag url静态化全攻略 兼容"+","#"等特殊字符首先确认我们的需求：http: xxx.com tag 标签来访问：http: xxx.com index.php?m=content&c=tag&a=lists&tag=标签实现url的伪静态化。（p...首先确认我们的需求：http://xxx.com/tag/标签 来访问：http://...
required file `./ltmain.sh\' not found - 更多技术 - 清泛网 - 专注C/C++及内核技术
required file `./ltmain.sh' not found在linux下编译c c＋＋程序出错：$ automake --add-missing....configure.in:18: required file `build ltmain.sh' not found......在linux下编译c/c＋＋程序出错：
$ automake --add-missing
....
configure.in:18: required file `build/ltmain.sh' not fo...
PhpCms v9 Tag url静态化全攻略 兼容\"+\",\"#\"等特殊字符 - 更多技术 - ...
PhpCms v9 Tag url静态化全攻略 兼容"+","#"等特殊字符首先确认我们的需求：http: xxx.com tag 标签来访问：http: xxx.com index.php?m=content&c=tag&a=lists&tag=标签实现url的伪静态化。（p...首先确认我们的需求：http://xxx.com/tag/标签 来访问：http://...