code: def partition_expr_check(expr):
      if isinstance(expr, QPartitionExpr):
          return True, expr.expr
      return False, expr
  
file_path: tvm/python/tvm/relay/quantize/_partition.py
imports: import tvm
  from ..None import expr
  from ..None import analysis
  from .None import _quantize
  from .quantize import _forward_op
label_desc: Use image node_id 2 for calling a global function with example usage: partition_expr_check(expr) and returns: False,  expr, True,  expr