class_docstr: Checker for ast <-> pattern.
  
  NodeVisitor is needed for specific behavior checker.
  
  Attributes
  ----------
  node : AST
      node we want to compare with pattern
  placeholders : [AST]
      list of placeholder value for later comparison or replacement.
class_docstr_tok: ["Checker","for","ast","<","-",">","pattern",".","NodeVisitor","is","needed","for","specific","behavior","checker",".","Attributes","--","--","--","--","--","node",":","AST","node","we","want","to","compare","with","pattern","placeholders",":","[","AST","]","list","of","placeholder","value","for","later","comparison","or","replacement","."]
docstr: Every node match with it. 
docstr_tok: ["Every","node","match","with","it","."]
code: def visit_AST_any(_):
      """Every node match with it."""
      return True
  
imports: from gast import AST, iter_fields, NodeVisitor, Dict, Set
  from itertools import permutations
  from math import isnan
label_desc: Use image node_id 4 for calling the Check obj's underlying member method code with example usage: obj.visit_AST_any(_) and returns: True