fix some architectures bugs (#545)

* Update xception.py

* Update vgg.py

* Update regnet.py

ppcls/modeling/architectures/regnet.py

@@ -144,7 +144,7 @@ class BottleneckBlock(nn.Layer):
             self.se_block = SELayer(
                 num_channels=w_b,
                 num_filters=w_b,
-                reduction_channels=w_se,
+                reduction_ratio=w_se,
                 name=name + "_branch2se")
         self.conv2 = ConvBNLayer(
             num_channels=w_b,

ppcls/modeling/architectures/vgg.py

@@ -80,7 +80,7 @@ class VGGNet(nn.Layer):
         }
         assert self.layers in self.vgg_configure.keys(), \
             "supported layers are {} but input layer is {}".format(
-                vgg_configure.keys(), layers)
+                self.vgg_configure.keys(), layers)
         self.groups = self.vgg_configure[self.layers]
 
         self._conv_block_1 = ConvBlock(3, 64, self.groups[0], name="conv1_")

ppcls/modeling/architectures/xception.py

@@ -6,6 +6,7 @@ from paddle.nn import Conv2D, BatchNorm, Linear, Dropout
 from paddle.nn import AdaptiveAvgPool2D, MaxPool2D, AvgPool2D
 from paddle.nn.initializer import Uniform
 import math
+import sys
 
 __all__ = ['Xception41', 'Xception65', 'Xception71']