diff --git a/fuzzers/005-tilegrid/clk_hrow/top.py b/fuzzers/005-tilegrid/clk_hrow/top.py
index 0db696b3..66b7d67a 100644
--- a/fuzzers/005-tilegrid/clk_hrow/top.py
+++ b/fuzzers/005-tilegrid/clk_hrow/top.py
@@ -28,8 +28,7 @@ def write_params(params):
 
 
 def run():
-    print(
-        '''
+    print('''
 module top();
     ''')
 
@@ -37,7 +36,7 @@ module top();
 
     sites = list(gen_sites())
     for (tile_name, sites), isone in zip(sites,
-                                             util.gen_fuzz_states(len(sites))):
+                                         util.gen_fuzz_states(len(sites))):
         site_name = sites[0]
         params[tile_name] = (site_name, isone)
 
@@ -48,9 +47,9 @@ module top();
                 .INIT_OUT({isone})
                 ) buf_{site} ();
 '''.format(
-    site=site_name,
-    isone=isone,
-    ))
+                site=site_name,
+                isone=isone,
+            ))
 
     print("endmodule")
     write_params(params)
diff --git a/fuzzers/040-clk_hrow_config/generate.py b/fuzzers/040-clk_hrow_config/generate.py
index d3a07f0a..1fe04bcf 100644
--- a/fuzzers/040-clk_hrow_config/generate.py
+++ b/fuzzers/040-clk_hrow_config/generate.py
@@ -16,16 +16,19 @@ def main():
     for row in params:
         base_name = 'BUFHCE_X{}Y{}'.format(row['x'], row['y'])
 
-
-        segmk.add_site_tag(row['site'], '{}.IN_USE'.format(base_name), row['IN_USE'])
+        segmk.add_site_tag(
+            row['site'], '{}.IN_USE'.format(base_name), row['IN_USE'])
         if not row['IN_USE']:
             continue
 
-        segmk.add_site_tag(row['site'], '{}.INIT_OUT'.format(base_name), row['INIT_OUT'])
+        segmk.add_site_tag(
+            row['site'], '{}.INIT_OUT'.format(base_name), row['INIT_OUT'])
 
         # SYNC is a zero pattern
         for opt in ['ASYNC']:
-            segmk.add_site_tag(row['site'], '{}.CE_TYPE.'.format(base_name) + opt, verilog.unquote(row['CE_TYPE']) == opt)
+            segmk.add_site_tag(
+                row['site'], '{}.CE_TYPE.'.format(base_name) + opt,
+                verilog.unquote(row['CE_TYPE']) == opt)
 
     segmk.compile()
     segmk.write()
diff --git a/fuzzers/040-clk_hrow_config/top.py b/fuzzers/040-clk_hrow_config/top.py
index b19e936f..9b3d329e 100644
--- a/fuzzers/040-clk_hrow_config/top.py
+++ b/fuzzers/040-clk_hrow_config/top.py
@@ -9,6 +9,7 @@ from prjxray.db import Database
 
 XY_RE = re.compile('^BUFHCE_X([0-9]+)Y([0-9]+)$')
 
+
 def gen_sites():
     db = Database(util.get_db_root())
     grid = db.grid()
@@ -54,9 +55,11 @@ module top();
 
             if params['IN_USE']:
                 params['INIT_OUT'] = random.randint(0, 1)
-                params['CE_TYPE'] = verilog.quote(random.choice(('SYNC', 'ASYNC')))
+                params['CE_TYPE'] = verilog.quote(
+                    random.choice(('SYNC', 'ASYNC')))
 
-                print('''
+                print(
+                    '''
     (* KEEP, DONT_TOUCH, LOC = "{site}" *)
     BUFHCE #(
         .INIT_OUT({INIT_OUT}),