code: def verify_file(self, path, destination, verify='none'):
          
          content = from_file(path)
          log.info('Verifying using %s...' % verify)
          if verify == 'raw':
  
              data = self.download_file(destination)
              if content != data:
                  log.error('Raw verification failed.')
                  raise VerificationError('Verification failed.')
              else:
                  log.info('Verification successful. Contents are identical.')
          elif verify == 'sha1':
              #Calculate SHA1 on remote file. Extract just hash from result
              data = self.__exchange('shafile("'+destination+'")').splitlines()[1]
              log.info('Remote SHA1: %s', data)
  
              #Calculate hash of local data
              filehashhex = hashlib.sha1(content.encode(ENCODING)).hexdigest()
              log.info('Local SHA1: %s', filehashhex)
              if data != filehashhex:
                  log.error('SHA1 verification failed.')
                  raise VerificationError('SHA1 Verification failed.')
              else:
                  log.info('Verification successful. Checksums match')
  
          elif verify != 'none':
              raise Exception(verify + ' is not a valid verification method.')
docs: Tries to verify if path has same checksum as destination.
              Valid options for verify is 'raw', 'sha1' or 'none'