code: def _de_casteljau1(beta, t):
      next_beta = beta[:-1] * (1 - t) + beta[1:] * t
      return next_beta
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import numpy
  from matplotlib.path import Path
  from operator import xor
  import warnings
label_desc: Use image node_id 3 for calling a global function with example usage: _de_casteljau1(beta, t) and returns: next_beta