[#2] Fix Python linting

Author: josecelano

src/03_sign_commit_using_the_gitpython_package.py

@@ -227,7 +227,8 @@ def main(gpg_private_key, passphrase, repo_dir):
     # https://gitpython.readthedocs.io/
 
     # Get environment variables
-    gpg_private_key = os.getenv('GPG_PRIVATE_KEY').replace(r'\n', '\n') # Replace \n character in docker env var with real line breaks.
+    # Replace \n character in docker env var with real line breaks.
+    gpg_private_key = os.getenv('GPG_PRIVATE_KEY').replace(r'\n', '\n')
     passphrase = os.environ.get('PASSPHRASE')
     mode = os.environ.get('MODE')
     repo_dir = os.environ.get('REPO_DIR')