python - Processes in multiprocessing.Pool not reporting runtime errors -

-

I have a pool of processes in Python that has been used from multiprocessing import pool . I run various tasks to pass those people, calling the Pool.apply_async function. If I start one of those errors (i.e.: a line of code, such as 5/0 ), expected command line report ZeroVision Aire: Zero by integer division or modules Never shows, and the program never ends, even if I present a callback function in the call to "Code.Apple_async , I never called the callback function. Goes, if the function is done To Anvit is an error on that.

How can I get those errors in the errors of the pool report and if something goes wrong, then what can be terminated?

In order for you to be raised in the parent, the actual apply_async (Or map_async ), try the returned results. 

  def func (): Exception ("we failed") ... results = pool.app_a_sync (funk, args = (arg)) time.sleep (2) result.get ( ) # Exception is only picked here.   
 You can execute any  callback  only function if the function returns successfully. If it raises an exception, it is abandoned  
 In Python 3.2+, the keyword argument was introduced, which allows you to pass a callback that is executed if the worker is in a Exception is picked up, but you can not do that in Python 2.x What you can do is to wrap your worker's work in adopting any exception, instead of lifting it into  return  worker in  except  try  /  block. . :  
  def func (): try: Exception exception ("we fail") Exception e: Return e   
 Then you will get a normal callback The function that checks to see if the  exception  was returned:  
  def callback (result): ifinstance (result, exception): # Also have to clean and exit: # function was successful

Comments

Post a Comment

Popular posts from this blog

php - PDO bindParam() fatal error -

-
I am trying to learn PDO, now I have written this small code, but it gives me a serious error: Fatal error: Call a member function at a non-object dot () ... $ con = new mysqli ("127.0.0.1", "root", "", "csvdangercheck"); $ Query = $ con- & gt; ("Id,` var1`, `var2`) values ​​(" id,: var1,: var2) ";); $ query- & gt; bypass pattern (': id', $ id); $ query- & gt; BindParam (': var1', $ VAL1); $ Query- & gt; bindParam (': var2', $ val2); $ Query-> Executed (); I Trying to use print_r ($ con-> errorInfo ()) but Fatal error: Undefined method mysqli :: errorInfo ( ) ... can someone tell me what am I missing? Flaffeh said, you have PDO Missing Mysqy, try it: $ con = new PDO ('mysql: host = 127.0.0.1; dbname = csvdangercheck', 'root', '');
Read more

php - How can I cram 6+31 numeric characters into 22 alphanumeric characters? -

-
I have a 6 digit number and a 31-digit number (such as "234536" and "201103231043330478311223582826") that I The API needs to be crawled in the same 22-character alphanumeric field that uses PHP. I tried to convert each one to 32 (using custom code could not handle the base_convert () large number) and to connect with a single-character delimiter, but It only gives me 26 characters This is a restore API, so the letters should be URI-protected. I would like to do a database table cross with two references without reference to another reference value, if possible, any suggestions? Instead use a radix of 62. This will give you 22 characters for the top, 3.35 for the pre and 17.3 for the next. & gt; & Gt; & Gt; Math.log (10 ** 6) /math.log (62) 3.3474826039165504 & gt; & Gt; & Gt; Math.log (10 ** 31) /math.log (62) 17.295326786902177
Read more

logging - How can I log both the Request.InputStream and Response.OutputStream traffic in my ASP.NET MVC3 Application for specific Actions? -

-
For a specific set of tasks, I need to log in to the incoming request inputstream as well as outgoing response. is. I am using an ActionFilterAttribute for this and overriding the OnActionExecuted and OnResultExecuted methods. So I'm starting with this idea ... Public category ActionLoggerAttribute: ActionFilterArrbit {Public Override Zero On-Offed Execution (ActionActioned Contact Filter Filter) {base.OnActionAxecuted (FilterContext); HttpRequestBase request = filterContext.HttpContext.Request; // TODO: Log the request. InputStream} Public Override Zero OnResultExecuted (ResultExecutedContext FilterContext) {base.OnResultExecuted (filterContext); HTTPRPSPointBase Response = FilterContacts Hpptex response; // TODO: Log on Response.OutputStream}} Ideally I'll hook it up with enterprise library logging because I'm already using it for error logging. Am I reaching the input and output stream at the right time? Can I easily use the Enterprise Library to log i...
Read more