code: def compute_alpha(n):
      """alpha_n from DLMF 8.12.13"""
      coeffs = mp.taylor(eta, 0, n - 1)
      return lagrange_inversion(coeffs)
  
file_path: catboost/contrib/python/scipy/py2/scipy/special/_precompute/gammainc_asy.py
imports: from __future__ import division, print_function, absolute_import
  import os
  from scipy.special._precompute.utils import lagrange_inversion
label_desc: Use image node_id 4 for calling a global function with example usage: compute_alpha(n) and returns: lagrange_inversion