Making the python dictionary existence check more robust

Author: JohnDumbell

driver/run.py

@@ -213,19 +213,19 @@ def prepare_scan(cmdline):
         configuration = json.load(config_file)
         file_name = os.path.basename(config_file.name)
 
-    if not configuration["detectedEntryPointsPath"]:
+    if not configuration.get("detectedEntryPointsPath", None):
         configuration["detectedEntryPointsPath"] = \
             os.path.join(cmdline.common_dir, "detected_entry_points.json")
 
-    if not configuration["diConfigurationPath"]:
+    if not configuration.get("diConfigurationPath", None):
         configuration["diConfigurationPath"] = \
             os.path.join(cmdline.common_dir, "di_configuration.json")
 
-    if not configuration["collectedClassesPath"]:
+    if not configuration.get("collectedClassesPath", None):
         configuration["collectedClassesPath"] = \
             os.path.join(cmdline.common_dir, "collected_classes.json")
 
-    if not configuration["collectedClassesInfoPath"]:
+    if not configuration.get("collectedClassesInfoPath", None):
         configuration["collectedClassesInfoPath"] = \
             os.path.join(cmdline.common_dir, "collected_classes_info.json")