fix pact demo path issue (#403)

demo/quant/pact_quant_aware/train.py

@@ -8,8 +8,9 @@ import math
 import time
 import numpy as np
 import paddle.fluid as fluid
-sys.path[0] = os.path.join(
-    os.path.dirname("__file__"), os.path.pardir, os.path.pardir)
+sys.path.append(os.path.dirname("__file__"))
+sys.path.append(
+    os.path.join(os.path.dirname("__file__"), os.path.pardir, os.path.pardir))
 from paddleslim.common import get_logger
 from paddleslim.analysis import flops
 from paddleslim.quant import quant_aware, quant_post, convert
@@ -133,8 +134,8 @@ def compress(args):
         raise ValueError("{} is not supported.".format(args.data))
 
     image_shape = [int(m) for m in image_shape.split(",")]
-    assert args.model in model_list, "{} is not in lists: {}".format(
-        args.model, model_list)
+    assert args.model in model_list, "{} is not in lists: {}".format(args.model,
+                                                                     model_list)
     image = fluid.layers.data(name='image', shape=image_shape, dtype='float32')
     if args.use_pact:
         image.stop_gradient = False
@@ -196,8 +197,7 @@ def compress(args):
     if args.pretrained_model:
 
         def if_exist(var):
-            return os.path.exists(
-                os.path.join(args.pretrained_model, var.name))
+            return os.path.exists(os.path.join(args.pretrained_model, var.name))
 
         fluid.io.load_vars(exe, args.pretrained_model, predicate=if_exist)
 
@@ -230,10 +230,9 @@ def compress(args):
             acc_top5_ns.append(np.mean(acc_top5_n))
             batch_id += 1
 
-        _logger.info("Final eval epoch[{}] - acc_top1: {}; acc_top5: {}".
-                     format(epoch,
-                            np.mean(np.array(acc_top1_ns)),
-                            np.mean(np.array(acc_top5_ns))))
+        _logger.info("Final eval epoch[{}] - acc_top1: {}; acc_top5: {}".format(
+            epoch,
+            np.mean(np.array(acc_top1_ns)), np.mean(np.array(acc_top5_ns))))
         return np.mean(np.array(acc_top1_ns))
 
     def train(epoch, compiled_train_prog):
@@ -259,8 +258,8 @@ def compress(args):
                 threshold = {}
                 for var in val_program.list_vars():
                     if 'pact' in var.name:
-                        array = np.array(fluid.global_scope().find_var(
-                            var.name).get_tensor())
+                        array = np.array(fluid.global_scope().find_var(var.name)
+                                         .get_tensor())
                         threshold[var.name] = array[0]
                 print(threshold)