display on start modified

app.py

@@ -8,7 +8,6 @@ from data_QA import DataQA
 import os
 
 def main():
-    print("test1")
     if os.path.exists("data.csv"):
         os.remove("data.csv")
     with open("data.csv", 'w'):
@@ -18,20 +17,22 @@ def main():
     data_loader = DataLoader()
     data = data_loader.load_data()
 
-    data_transformer = DataTransformer(data)
-    modified_data = data_transformer.perform_column_operation()
+    if os.path.getsize("data.csv") != 0:
+        data_transformer = DataTransformer(data)
+        modified_data = data_transformer.perform_column_operation()
 
-    data_analyzer = DataAnalyzer(modified_data)
-    data_analyzer.show_summary_statistics()
-    data_analyzer.show_data_types()
+        data_analyzer = DataAnalyzer(modified_data)
+        data_analyzer.show_summary_statistics()
+        data_analyzer.show_data_types()
 
-    data_filter = DataFilter(modified_data)
-    data = data_filter.filter_rows()
+        data_filter = DataFilter(modified_data)
+        data = data_filter.filter_rows()
 
-    data_visualizer = DataVisualizer(modified_data)
-    data_visualizer.visualize_data()
+        data_visualizer = DataVisualizer(modified_data)
+        data_visualizer.visualize_data()
+
+        data_QA = DataQA(data)
+        data_QA.ask_csv()
 
-    data_QA = DataQA(data)
-    data_QA.ask_csv()
 if __name__ == "__main__":
     main()