diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 0cfa37e..79ec333 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1258,7 +1258,7 @@
 class PyZipFile(ZipFile):
     """Class to create ZIP archives with Python library files and packages."""
 
-    def writepy(self, pathname, basename = ""):
+    def writepy(self, pathname, basename=""):
         """Add all files from "pathname" to the ZIP archive.
 
         If pathname is a package directory, search the directory and