diff --git a/bazelisk.py b/bazelisk.py
index a17ec652..be2cd1cd 100755
--- a/bazelisk.py
+++ b/bazelisk.py
@@ -180,8 +180,7 @@ def get_version_history(bazelisk_directory):
         ),
         # This only handles versions with numeric components, but that is fine
         # since prerelease versions have been excluded.
-        key=lambda version: tuple(int(component)
-                                  for component in version.split('.')),
+        key=lambda version: tuple(int(component) for component in version.split(".")),
         reverse=True,
     )
 
@@ -308,8 +307,8 @@ def download_bazel_into_directory(version, is_commit, directory):
 
     sha256_path = destination_path + ".sha256"
     expected_hash = ""
-    matcher=re.compile(r"(\d*\.\d*(?:\.\d*)?)(rc\d+)?")
-    matched=matcher.match(version)
+    matcher = re.compile(r"(\d*\.\d*(?:\.\d*)?)(rc\d+)?")
+    matched = matcher.match(version)
     if not os.path.exists(sha256_path):
         try:
             download(bazel_url + ".sha256", sha256_path)
@@ -322,13 +321,13 @@ def download_bazel_into_directory(version, is_commit, directory):
                     return destination_path
                 if matched:
                     (version, rc) = matched.groups()
-                    fallback_url="https://releases.bazel.build/{}/{}/{}".format(
+                    fallback_url = "https://releases.bazel.build/{}/{}/{}".format(
                         version, rc if rc else "release", bazel_filename
                     )
                     try:
                         download("{}.sha256".format(fallback_url), sha256_path)
                         os.remove(destination_path)
-                        download(fallback_url,destination_path)
+                        download(fallback_url, destination_path)
                     except HTTPError:
                         return destination_path
                     os.chmod(destination_path, 0o755)
@@ -350,12 +349,12 @@ def download_bazel_into_directory(version, is_commit, directory):
         )
         if matched:
             (version, rc) = matched.groups()
-            fallback_url="https://releases.bazel.build/{}/{}/{}".format(
+            fallback_url = "https://releases.bazel.build/{}/{}/{}".format(
                 version, rc if rc else "release", bazel_filename
             )
             try:
                 download("{}.sha256".format(fallback_url), sha256_path)
-                download(fallback_url,destination_path)
+                download(fallback_url, destination_path)
             except HTTPError:
                 exit(22)
             os.chmod(destination_path, 0o755)