code: def _argcheck(self, c):
      c = np.asarray(c)
      self.b = where(c > 0, 1.0 / np_abs(c), inf)
      return where(c == 0, 0, 1)
  
imports: import numpy
  from scipy import stats
  from scipy.special import comb
  from scipy.stats.distributions import rv_continuous
  import matplotlib.pyplot
  from numpy import where, inf
  from numpy import abs
label_desc: Use image node_id 1 for calling the genpareto2_gen obj's underlying member method code with example usage: obj._argcheck(c) and returns: where