diff --git a/doc/web/hooks/__hooks__.py b/doc/web/hooks/__hooks__.py
index 91b04888..522f0a88 100644
--- a/doc/web/hooks/__hooks__.py
+++ b/doc/web/hooks/__hooks__.py
@@ -28,9 +28,9 @@ def chmod(config):
     output_dir = config["output_dir"]
     for dirpath, dirnames, filenames in os.walk(output_dir):
         for dirname in dirnames:
-            os.chmod(os.path.join(dirpath, dirname), 0755)
+            os.chmod(os.path.join(dirpath, dirname), 0o755)
         for filename in filenames:
-            os.chmod(os.path.join(dirpath, filename), 0644)
+            os.chmod(os.path.join(dirpath, filename), 0o644)
 
 
 hooks = {
diff --git a/scripts/analyze_memdump.py b/scripts/analyze_memdump.py
index 3f0f9cf9..cfcebf22 100755
--- a/scripts/analyze_memdump.py
+++ b/scripts/analyze_memdump.py
@@ -39,7 +39,7 @@ def print_memorydump(filename):
 
     om = loader.load(filename, collapse=True)
     om.remove_expensive_references()
-    print om.summarize()
+    print(om.summarize())
     return om
 
 
@@ -82,7 +82,8 @@ def write_html_header(fp, type_str, encoding):
     fp.write(HtmlHeader % encoding)
     fp.write("<h1>Type %s</h1>\n" % type_str)
     fp.write(
-        "<table><tr><th>Address</th><th>Name</th><th>Size</th><th>Parents</th><th>References</th></tr>\n"
+        "<table><tr><th>Address</th><th>Name</th><th>Size</th><th>Parents</th>"
+        "<th>References</th></tr>\n"
     )
 
 
@@ -129,8 +130,8 @@ def write_html_obj(fp, obj, objs):
         value=value,
     )
     fp.write(
-        "<tr><td>%(address)d</td><td>%(value)s</td><td>%(size)s</td><td>%(children)s</td></tr>\n"
-        % attrs
+        "<tr><td>%(address)d</td><td>%(value)s</td><td>%(size)s</td>"
+        "<td>%(children)s</td></tr>\n" % attrs
     )
 
 
diff --git a/scripts/update_iana_uri_schemes.py b/scripts/update_iana_uri_schemes.py
index 967f0a77..db23b36f 100644
--- a/scripts/update_iana_uri_schemes.py
+++ b/scripts/update_iana_uri_schemes.py
@@ -87,7 +87,7 @@ def main(args):
         other=get_regex(iana_uri_schemes_other),
     )
     res = template % args
-    print res
+    print(res)
     return 0