How to write in Stdout and a file at the same time?

as an applied solution, literally performing the task voiced in the question: you can create a class that takes two file objects, and when writing in an object of this class, make an entry in both file objects.

   from  __future__  import  print_function  import  sys   class   dublewrite :   def   __ init __  ( def   write  ( self, s ):  self.file1.write   self.file2.write (s)   def   flush  ( self ):  self.file1.flush ()   self.file2.flush () logfile =  open  ( 'my_log.log' ,  'w' ) sys.studout = DOBLEWRITE (SYS.STDOUT, LOGFILE)   print  ()     
 logging 
  
  update.  
  
 for the correct redirecting and subsequent restoration of  sys.Stdout  in Python 3, it is better to use the context manager. In the standard Python 2 library, such a context manager, unfortunately, is not. 
  
 an example of use (for python 3): 
  
  import  sys  from  contextlib  import  redirect_stdout  class   dublewrite :  ...   with   open  ( 'my_log.log' ,  'w' )  as  logfile:   with  redirect_stdout (dublewrite (sys.studut, logfile)):   Print  ( 'test' )     
  sys.stdout  will be restored.