fix code

x2paddle/convert.py

@@ -102,8 +102,8 @@ def tf2paddle(model_path,
     optimizer = TFOptimizer(mapper)
     optimizer.delete_redundance_code()
     optimizer.strip_graph()
-#        optimizer.merge_activation()
-#        optimizer.merge_bias()
+    #        optimizer.merge_activation()
+    #        optimizer.merge_bias()
     mapper.save_inference_model(save_dir)
 
 
@@ -172,8 +172,13 @@ def main():
     try:
         import paddle
         v0, v1, v2 = paddle.__version__.split('.')
-		if v0 == 0 and v1 == 0 and v2 == 0:
-			print("You have installed paddlepaddle-dev? We're not sure it's working for x2paddle!"
+        if int(v0) == 0 and int(v1) == 0 and int(v2) == 0:
+            print(
+                "You have installed paddlepaddle-dev? We're not sure it's working for x2paddle!"
+            )
+            print(
+                "==================paddlepaddle>=1.6.1 is strongly recommended================="
+            )
         elif int(v0) != 1 or int(v1) < 6:
             print("paddlepaddle>=1.6.1 is required")
             return
@@ -184,7 +189,6 @@ def main():
     assert args.framework is not None, "--framework is not defined(support tensorflow/caffe/onnx)"
     assert args.save_dir is not None, "--save_dir is not defined"
 
-
     if args.framework == "tensorflow":
         assert args.model is not None, "--model should be defined while translating tensorflow model"
         without_data_format_optimization = False