docs: def fprint(expr, print_ascii=False):
      r"""This function chooses whether to use ascii characters to represent
      a symbolic expression in the notebook or to use sympy's pprint.
  
      >>> from sympy import cos
      >>> omega=Symbol("omega")
      >>> fprint(cos(omega),print_ascii=True)
      cos(omega)
  
  
      """
      if print_ascii:
          pprint(expr, use_unicode=False, num_columns=120)
      else:
          return expr