diff --git a/src/event_handlers/source_code_event_handler.py b/src/event_handlers/source_code_event_handler.py
index 8109504..b92cc80 100644
--- a/src/event_handlers/source_code_event_handler.py
+++ b/src/event_handlers/source_code_event_handler.py
@@ -10,6 +10,7 @@ log = logging.getLogger(__name__)
 
 class FileManager:
     def __init__(self, working_directory, selected_file=None):
+        self.exclude = ['__pycache__']
         self._workdir = working_directory
         self.filename = selected_file or self._relpath(self.files[0])
         self.language = map_file_extension_to_language(self.filename)
@@ -22,7 +23,9 @@ class FileManager:
 
     @property
     def files(self):
-        return [self._relpath(file) for file in glob(join(self._workdir, '**/*'), recursive=True) if isfile(file)]
+        return [self._relpath(file) for file in glob(join(self._workdir, '**/*'), recursive=True)
+                if isfile(file) and
+                not any(word in file for word in self.exclude)]
 
     @property
     def file_contents(self):