For Max

http://www.pythoncentral.io/how-to-traverse-a-directory-tree-in-python-guide-to-os-walk/

import os
import shutil

input_directory = "FROM_BIG_DEPOSIT"
output_directory = "CLEAN_BIG_DEPOSIT"
def _src_2_dst(src_directory, src_name):
   ''' 
   examplish:
       input = P-joke1-map.pdf
       output = pReal1-map.pdf
   '''
   NAMES = [
    ("P-joke1", "pReal2"),
    ("P-joke", "pReal1"),
    
   ]
   for old_name, new_name in NAMES:
      if src_name.startswith(old_name):
          dst_name = src_name.replace(old_name, new_name, 1)
          return dst_name
   else:
      print "DID NOT FIND NEW NAME"

if os.path.exists(ouput_directory):
   shutil.rmtree(ouput_directory)
os.mkdir(outout_directory)

for directory, subdirlist, filelist in os.walk(input_directory):
    for fname in filelist:
        src_path = os.path.join(directory, fname)
        #dst_name = #.... some code to figure out what the new name should be ...
        dst_name = _src_2_dst(directory, fname)
        dst_path = os.path.join(output_directory, dst_name)
        shutil.copy_file(src_path, dst_path)