code: def find(pattern, path='.', exclude=None, recursive=True):
      
      import fnmatch
      import os
  
      if recursive:
          for root, dirnames, filenames in os.walk(path):
              for pat in _to_list(pattern):
                  for filename in fnmatch.filter(filenames, pat):
                      filepath = join(abspath(root), filename)
                      for excl in _to_list(exclude):
                          if excl and fnmatch.fnmatch(filepath, excl):
                              break
                      else:
                          yield filepath
      else:
          for pat in _to_list(pattern):
              for filename in fnmatch.filter(list(path), pat):
                  filepath = join(abspath(path), filename)
                  for excl in _to_list(exclude):
                      if excl and fnmatch.fnmatch(filepath, excl):
                          break
                      else:
                          yield filepath
docs: Find files that match *pattern* in *path*