Selection of the last by the date of the file from the catalog

We simply tu the file list into the list of files with ways:

  philes = "" [OS.Path.JOIN (Path, File)  for  file  in  files]     
 the function os.path.join () "attaches" the path to the file name. Depending on the system, this feature inserts either a straight slash, or a reverse, or nothing at all, if the slash is already at the end of the jouey. 
  
 We leave only files in the list: 
  
  Files = [File  for  file  in  files  if  os.path.ospile]     
 the functions of the file will determine the function  os.path.getctime () . You need to find a file that has a maximum modification date. To do this, we will use the  max  function with an additional  key  parameter, which allows you to set a function that will be applied to each object from the list, the minimum will be determined by the corresponding retu values: 
  
   & gt; & gt; & gt;   max  (files, key = os.path.getctime)   'C: \\ python27 \\ liceense.txt'    
  
 in other other in the other I see the answers  sort  or  sorted . Why not apply it? It's simple: why sort the list (possibly large), when you need to only go along it once and find the maximum.