diff --git a/cpython-windows/build.py b/cpython-windows/build.py
index cc9e5dc6..8105d4f5 100644
--- a/cpython-windows/build.py
+++ b/cpython-windows/build.py
@@ -224,8 +224,10 @@ def find_vswhere():
 
 
 def find_vs_path(path, msvc_version):
-    """ Attempts to find 'path' by invoking vswhere to identify where the
-        given msvc_version is installed. """
+    """
+    Attempts to find 'path' by invoking vswhere to identify where the
+    given msvc_version is installed.
+    """
     vswhere = find_vswhere()
 
     if msvc_version == "2019":
@@ -248,12 +250,12 @@ def find_vs_path(path, msvc_version):
     ]
     p = subprocess.check_output(cmdline)
     if not p:
-        cmd = ' '.join('"%s"' % i for i in cmdline)
+        cmd = " ".join('"%s"' % i for i in cmdline)
         print("could not find visual studio (using '%s')" % cmd)
         sys.exit(1)
 
     p = p.strip().decode("utf-8")
-    if '\n' in p:  # more than one line
+    if "\n" in p:  # more than one line
         print("found multiple matching instances of visual studio %s:" % msvc_version)
         print(p)
         sys.exit(1)