code: def alpha_sigma_to_t(alpha, sigma):
      return paddle.atan2(sigma, alpha) * 2 / math.pi
  
imports: import math
  from dataclasses import dataclass
  from functools import partial
  import paddle
  import paddle.nn
label_desc: Use image node_id 3 for calling a global function with example usage: alpha_sigma_to_t(alpha, sigma) and returns: unknown