code: def removeSpacePadding(str, blocksize=AES_blocksize):
      'Remove padding with spaces' 
      pad_len = 0    
      for char in str[::-1]: # str[::-1] reverses string
          if char == ' ':
              pad_len += 1
          else:
              break
  
      str = str[:-pad_len]
     
      return stf removeSpacePadding(str, blocksize=AES_blocksize):
      'Remove padding with spaces' 
      pad_len = 0    
      for char in str[::-1]: # str[::-1] reverses string
          if char == ' ':
              pad_len += 1
          else:
              break
  
      str = str[:-pad_len]
     
      return str
docs: Remove padding with spaces