def transform_ExprStmt(self, stmt):

    v = self.transform_expr(stmt.value)
    if self.immutable(v):
      return None
    else:
      stmt.value = v
      return stmt
Don't run an expression unless it possibly has a side effect
dataset/ETHPy150Open iskandr/parakeet/parakeet/transforms/simplify.py/Simplify.transform_ExprStmt