code: def windows(self, window_size=60, context_len=90, step=10):
          '''Walk through the sequence of interest in windows of window_size,
          evaluate free (unbound) pair probabilities.
  
          :param window_size: Window size in base pairs.
          :type window_size: int
          :param context_len: The number of bases of context to use when
                              analyzing each window.
          :type context_len: int
          :param step: The number of base pairs to move for each new window.
          :type step: int
  
          '''
          self.walked = _context_walk(self.template, window_size, context_len,
                                      step)
          self.core_starts, self.core_ends, self.scores = zip(*self.walked)
          return self.walkef windows(self, window_size=60, context_len=90, step=10):
          '''Walk through the sequence of interest in windows of window_size,
          evaluate free (unbound) pair probabilities.
  
          :param window_size: Window size in base pairs.
          :type window_size: int
          :param context_len: The number of bases of context to use when
                              analyzing each window.
          :type context_len: int
          :param step: The number of base pairs to move for each new window.
          :type step: int
  
          '''
          self.walked = _context_walk(self.template, window_size, context_len,
                                      step)
          self.core_starts, self.core_ends, self.scores = zip(*self.walked)
          return self.walked
docs: Walk through the sequence of interest in windows of window_size,
          evaluate free (unbound) pair probabilities.
  
          :param window_size: Window size in base pairs.
          :type window_size: int
          :param context_len: The number of bases of context to use when
                              analyzing each window.
          :type context_len: int
          :param step: The number of base pairs to move for each new window.
          :type step: int