I usually try to use it like this:

 - DEBUG: Information interesting for Developers, when trying to debug a
   problem.
 - INFO: Information interesting for Support staff trying to figure out the context of a given error
 - WARN to FATAL: Problems and Errors depending on level of damage.

&gt; • **Debug**: fine-grained statements concerning program state, typically
&gt; used for debugging;  
&gt; 
&gt; • **Info**: informational statements concerning program state,
&gt; representing program events or behavior  tracking;  
&gt; 
&gt; • **Warn**: statements that describe potentially harmful events or states
&gt; in the program;  
&gt; 
&gt; • **Error**: statements that describe non-fatal errors in the application;
&gt; this level is used quite often for logging handled exceptions;  
&gt; 
&gt; • **Fatal**: statements representing the most severe of error conditions,
&gt; assumedly resulting in program termination.

Found on http://www.beefycode.com/post/Log4Net-Tutorial-pt-1-Getting-Started.aspx 




Also remember that all `info()`, `error()`, and `debug()` logging calls provide internal documentation within any application.

Is it possible to hide the Javascript code from the html of a webpage, when the source code is viewed through the browsers View Source feature? 

I know it is possible to obfuscate the code, but I would prefer it being *hidden* from the view source feature.

How do I hide javascript code in a webpage?

I used this :

    u = unicode(text, &#39;utf-8&#39;)

But getting error with Python 3 (or... maybe I just forgot to include something) : 

    NameError: global name &#39;unicode&#39; is not defined

Thank you.

How to make unicode string with python3

I am developing a large commercial program and keep confusing myself between what kind of information i want to log with Log.INFO and Log.DEBUG.  

Are there any standards or canonical Python Enhancement Proposal / Java standard conventions / rules defined for other languages on what each type of log message contains?

Log.INFO vs. Log.DEBUG

<p>I am developing a large commercial program and keep confusing myself between what kind of information i want to log with Log.INFO and Log.DEBUG.</p>
<p>Are there any standards or canonical Python Enhancement Proposal / Java standard conventions / rules defined for other languages on what each type of log message contains?</p>


For simple debugging in a complex project is there a reason to use the python logger instead of print?  What about other use-cases?  Is there an accepted best use-case for each (especially when you&#39;re only looking for stdout)?

I&#39;ve always heard that this is a &quot;best practice&quot; but I haven&#39;t been able to figure out why.

In python, why use logging instead of print?

In a python script I am writing, I am trying to log events using the logging module. I have the following code to configure my logger:

    ERROR_FORMAT = &quot;%(levelname)s at %(asctime)s in %(funcName)s in %(filename) at line %(lineno)d: %(message)s&quot;
    DEBUG_FORMAT = &quot;%(lineno)d in %(filename)s at %(asctime)s: %(message)s&quot;
    LOG_CONFIG = {&#39;version&#39;:1,
                  &#39;formatters&#39;:{&#39;error&#39;:{&#39;format&#39;:ERROR_FORMAT},
                                &#39;debug&#39;:{&#39;format&#39;:DEBUG_FORMAT}},
                  &#39;handlers&#39;:{&#39;console&#39;:{&#39;class&#39;:&#39;logging.StreamHandler&#39;,
                                         &#39;formatter&#39;:&#39;debug&#39;,
                                         &#39;level&#39;:logging.DEBUG},
                              &#39;file&#39;:{&#39;class&#39;:&#39;logging.FileHandler&#39;,
                                      &#39;filename&#39;:&#39;/usr/local/logs/DatabaseUpdate.log&#39;,
                                      &#39;formatter&#39;:&#39;error&#39;,
                                      &#39;level&#39;:logging.ERROR}},
                  &#39;root&#39;:{&#39;handlers&#39;:(&#39;console&#39;, &#39;file&#39;)}}
    logging.config.dictConfig(LOG_CONFIG)
When I try to run `logging.debug(&quot;Some string&quot;)`, I get no output to the console, even though [this page in the docs][1] says that `logging.debug` should have the root logger output the message. Why is my program not outputting anything, and how can I fix it?


  [1]: http://docs.python.org/library/logging.html#logging.debug

Python logging not outputting anything

We have developed an assembly for SQL Server 2008 R2.

The assembly has been working for a week.  The managed stored proc inside the assembly was working fine for the whole week and then it stops working.  We have been seeing this problem couple times.  The way to make it work again is to restart the SQL Server.


    Msg 10314, Level 16, State 11, Line 4
    An error occurred in the Microsoft .NET Framework while trying to load assembly id 65536. The server may be running out of resources, or the assembly may not be trusted with PERMISSION_SET = EXTERNAL_ACCESS or UNSAFE. Run the query again, or check documentation to see how to solve the assembly trust issues. For more information about this error: 
      System.IO.FileLoadException: Could not load file or assembly &#39;myAssembly, Version=2.0.0.490, Culture=neutral, PublicKeyToken=5963130873dd3a75&#39; or one of its dependencies. Exception from HRESULT: 0x80FC0E21 System.IO.FileLoadException:
      at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark&amp; stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
      at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark&amp; stackMark, Boolean forIntrospection)
      at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark&amp; stackMark, Boolean forIntrospection)
      at System.Reflection.Assembly.Load(String assemblyString)

I have found different articles on the web.  

[This KB](http://support.microsoft.com/kb/918040) suggested that I might have restored the database from another SQL Server, which I swear I didn&#39;t.  

[This blog](http://www.sqlskills.com/BLOGS/BOBB/category/SQLCLR.aspx) said I might run into this if I installed .NET 3.5 on SQL Server 2005 but mine was SQL Server 2008 R2 and I did not install anything when this problem occurs.

The main point is that it can keep going for a period of time.  It just stops working randomly.  Then, if we restart the SQL Server, it will start working again.  I have thought of my server was really running out of memory but now, I just see the problem again.  SQL Server is using 300MB RAM only and my server has 16GB RAM.  This sounds impossible that it&#39;s because I am running out of memory.

Now, I want to collect more information on this problem.  Any log that I can turn on and look at?  Any suggestion that help troubleshooting this problem is welcome.

I have run some SQL queries.

    SELECT * from sys.dm_clr_properties
    =============================================
    directory	C:\Windows\Microsoft.NET\Framework64\v2.0.50727\
    version	v2.0.50727
    state	CLR is initialized
.

    SELECT * from sys.dm_clr_appdomains
    ======================================================
    0x0000000087160240	3	mydatabase.dbo[runtime].2	2011-08-12 08:44:08.940	10	1	E_APPDOMAIN_SHARED	1	1
.

    SELECT * from sys.dm_clr_tasks
    ======================================================
    0x000000008185A080	0x00000000818562C8	0x0000000000000000	E_TASK_ATTACHED_TO_CLR	E_ABORT_NONE	E_TYPE_ADUNLOAD	0	0
    0x00000000818CE080	0x00000000818CA2C8	0x0000000000000000	E_TASK_ATTACHED_TO_CLR	E_ABORT_NONE	E_TYPE_FINALIZER	0	0
    0x0000000081AD4C30	0x000000000400D048	0x0000000000000000	E_TASK_ATTACHED_TO_CLR	E_ABORT_NONE	E_TYPE_USER	0	0

.

    SELECT * from sys.dm_clr_loaded_assemblies
    &lt;returns nothing&gt;

*** UPDATE ***

On my SQL Server, I have created four databases.  Each of them with the same assembly attached to it.  Now, SQL Server refused to load the assembly and gave me the above error.

`SELECT * from sys.dm_clr_appdomains` shows me at that point there was only one appdomain loaded and `SELECT * from sys.dm_clr_loaded_assemblies` showed me there were no assemblies loaded at all.

Then, I ran the same stored proc on the other three databases.  It worked and successfully loaded up the assemblies and successfully ran the stored proc.  After executing the stored proc.  `SELECT * from sys.dm_clr_appdomains` now shows me there are only four appdomain loaded and `SELECT * from sys.dm_clr_loaded_assemblies` showed me there are now three assemblies loaded.

This makes sense.  Now, I hope if I run the stored proc again in the original database, it should get the assembly loaded as it were.  Guess what.  No, it doesn&#39;t.  It still gives me the same error.  It looks like this database is completely stuck.  The only way to fix it is to reboot the SQL Server.  I am hoping there is a flag/lock somewhere in the system table holding up this.  I cannot find it.  Any idea is welcome.

Now, my SQL Server is in the state that requiring me to reboot to make it work again.  

*** UPDATE (8/31/2011) ***

It sounds like it&#39;s related to the database owner of the database.  This is kind of complicated.  We have two sites and two AD forests.  The SQL Server machine is joined to forest A but the database owner is from forest B.  The connection between forest A and forest B is not that stable since they are in two different sites physically connected by WAN.

Once I change the database owner to a SQL Login (Non-Windows account), my stored proc is up running for couple weeks so far with no interruption.

I will accept the answer if anybody can explain it.

SQL Server stops loading assembly

There are two ways of configuring and using log4net. First one is when I can configure my own appender and associated logger:

    &lt;!-- language: xml --&gt;

    &lt;appender name=&quot;myLogAppender&quot; type=&quot;log4net.Appender.RollingFileAppender&quot; &gt;
        &lt;file value=&quot;Logs\myLog.log&quot; /&gt;
        &lt;layout type=&quot;log4net.Layout.PatternLayout&quot;&gt;
            &lt;conversionPattern value=&quot;%date %level - %message%n&quot; /&gt;
        &lt;/layout&gt;
    &lt;/appender&gt;
    
    &lt;logger name=&quot;myLog&quot;&gt;
        &lt;level value=&quot;All&quot;&gt;&lt;/level&gt;
        &lt;appender-ref ref=&quot;myLogAppender&quot; /&gt;
    &lt;/logger&gt;

And then when I want to write something in log, I can do the following:

    ILog log = LogManager.GetLogger(&quot;myLog&quot;);
    log.Info(&quot;message&quot;);

Another way to use it is to configure root to be as detailed as I want:

    &lt;!-- language: xml --&gt;
  
    &lt;root&gt;
        &lt;level value=&quot;Error&quot; /&gt;
        &lt;appender-ref ref=&quot;myLogAppender&quot; /&gt;
    &lt;/root&gt;

And in this case I can log messages like this:

    ILog log = LogManager.GetLogger(typeof(Bar));
    log.Info(&quot;message&quot;);

The benefits of second approach is that you can enable or disable some messages on the fly. But the problem is that I&#39;m developing in EPiServer CMS and it has its own logging system that uses log4net and if I enable info logging at root level, then a lot of system logs will be written. 

How do you use log4net? Each part of a system writes in its own logger, or everything is written in default logger, and configuration decides what to do next? 

Correct way of using log4net (logger naming)

I want to redirect **all** console text to a file. Here is what I tried:

    &gt; sink(&quot;test.log&quot;, type=c(&quot;output&quot;, &quot;message&quot;))
    &gt; a &lt;- &quot;a&quot;
    &gt; a
    &gt; How come I do not see this in log
    Error: unexpected symbol in &quot;How come&quot;

 

Here is what I got in test.log:

    [1] &quot;a&quot;

Here is what I want in test.log:

    &gt; a &lt;- &quot;a&quot;
    &gt; a
    [1] &quot;a&quot;
    &gt; How come I do not see this in log
    Error: unexpected symbol in &quot;How come&quot;

What am I doing wrong? Thanks!



Content Type	Original Author	Original Content on Stackoverflow
Question	cytinus	View Question on Stackoverflow
Solution 1 - Logging	nfechner	View Answer on Stackoverflow
Solution 2 - Logging	Ash Burlaczenko	View Answer on Stackoverflow
Solution 3 - Logging	Pinky	View Answer on Stackoverflow

Log.INFO vs. Log.DEBUG

Logging Problem Overview

Logging Solutions

Solution 1 - Logging

Solution 2 - Logging

Solution 3 - Logging

How to make unicode string with python3

How do I hide javascript code in a webpage?

Attributions