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Deleting DataFrame row in Pandas based on column value
...
If you want to delete rows based on multiple values of the column, you could use:
df[(df.line_race != 0) & (df.line_race != 10)]
To drop all rows with values 0 and 10 for line_race.
...
Crop MP3 to first 30 seconds
... does not transcode. It is lightning fast.
NOTE: the command was updated based on comment from Oben Sonne
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How to activate JMX on my JVM for access with jconsole?
... in the answer by user3013578 and it worked for me (JDK 1.7 , Windows 8.1, 64 bit).
– Captain Jack Sparrow
Jul 19 '15 at 11:43
2
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How to disable Google Chrome auto update?
...the templates did NOTHING: https://support.google.com/installer/answer/146164?hl=en
I followed scrupulously the instructions of that page, the keys in the registry are all correct, but still going to the "About Google Chrome" when the program is opened, I can see the wheel going around and a few se...
How to create permanent PowerShell Aliases
...er users' space.
REMEMBER! The $PsHome path is different between 32bit and 64bit instances of powershell, so you have to consider both environment if you want always to execute the profile code. Usually the paths are C:\Windows\System32\WindowsPowerShell\v1.0 for the 64bit environment and C:\Windows...
Omitting all xsi and xsd namespaces when serializing an object in .NET?
...eed
public NoNamespaceXmlWriter(System.IO.TextWriter output)
: base(output) { Formatting= System.Xml.Formatting.Indented;}
public override void WriteStartDocument () { }
public override void WriteStartElement(string prefix, string localName, string ns)
{
base.WriteS...
Edit and Continue: “Changes are not allowed when…”
...ixed mode process
Try to set the CPU target to x86 rather than AnyCPU (on x64 machines)
Uncheck the Optimize Code checkbox for Debug Mode in Project Properties->Debug
Uncheck Enable Optimizations in Advanced Compiler Settings
(ASP.NET) Check nightcoder's answer if it is the case
(ASP.NET) Check t...
How to throw an exception in C?
...t) (void *) );
extern void * _ZTIl; // typeinfo of long
int bar1()
{
int64_t * p = (int64_t*)__cxa_allocate_exception(8);
*p = 1976;
__cxa_throw(p,&_ZTIl,0);
return 10;
}
// end bar.c
in a.cc,
#include <stdint.h>
#include <cstdio>
extern "C" int bar1();
void foo()
{
t...
Should I use px or rem value units in my CSS? [closed]
...e zoomed in or out. At this point, browsers scale the entire page, so font-based zooming is out of the picture.
Respecting a user's wishes is not out of the picture. Just because a browser is set to 16px by default, doesn't mean any user can't change their preferences to 24px or 32px to correct for...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...到30元，应否改变生产计划？
模型代码如下：
max=72*x1+64*x2;
x1+x2<=50;
12*x1+8*x2<=480;
3*x1<=100;
求解这个模型并做灵敏性分析，结果如下。
Global optimal solution found at iteration: 0
Objective value: 3360.0...