code: def assignment_helper(store_dtype, value_dtype):
      store = tir.Var("store", dtype=store_dtype)
      value = tir.Var("value", dtype=value_dtype)
      tir.Let(store, value, body=store)
  
file_path: tvm/tests/python/tir-base/test_tir_base.py
imports: import tvm
  import pytest
  from tvm import tir
  from tvm._ffi.base import TVMError
  from tvm.ir.transform import PassContext
  import itertools
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: assignment_helper(store_dtype, value_dtype) without return types