def is_android(filename):
 if (not filename):
  return None
 val = None
 with open(filename, 'r') as fd:
  f_bytes = fd.read()
  val = is_android_raw(f_bytes)
 return val

def is_android ( filename ) : if ( not filename ) : return None val = None with open ( filename , 'r' ) as fd : f_bytes = fd . read ( ) val = is_android_raw ( f_bytes ) return val
return the type of the file .