Added main function

losscalculator/damage_calculator.py

@@ -101,7 +101,7 @@ def damage_calculator(
     exposure.to_csv(result_filepath, index=False)
 
 
-if __name__ == "__main__":
+def main():
 
     parser = argparse.ArgumentParser(
         description="This program computes the probabilities of occurrence of different "
@@ -213,3 +213,7 @@ if __name__ == "__main__":
         result_filepath,
     )
     print("Execution time of the script", (datetime.datetime.now() - startTime))
+
+
+if __name__ == "__main__":
+    main()