code: def count_variations(V):
      count = 0
      vold = V[0]
      for n in range(1, len(V)):
          vnew = V[n]
          if vold * vnew < 0:
              count += 1
          vold = vnew
      return count
  
file_path: catboost/contrib/python/mpmath/py3/mpmath/functions/zetazeros.py
imports: from .functions import defun, defun_wrapped
label_desc: Use image node_id 8 for calling a global function with example usage: count_variations(V) and returns: count