diff --git a/fuzzers/005-tilegrid/util.py b/fuzzers/005-tilegrid/util.py
index b7af1cff..027196fd 100644
--- a/fuzzers/005-tilegrid/util.py
+++ b/fuzzers/005-tilegrid/util.py
@@ -6,6 +6,7 @@ from prjxray import util
 Local utils script to hold shared code of the 005-tilegrid fuzzer scripts
 '''
 
+
 def get_entry(tile_type, block_type):
     """ Get frames and words for a given tile_type (e.g. CLBLL) and block_type (CLB_IO_CLK, BLOCK_RAM, etc). """
     return {
@@ -26,13 +27,7 @@ def get_int_params():
 
 
 def add_tile_bits(
-        tile_name,
-        tile_db,
-        baseaddr,
-        offset,
-        frames,
-        words,
-        verbose=False):
+        tile_name, tile_db, baseaddr, offset, frames, words, verbose=False):
     '''
     Record data structure geometry for the given tile baseaddr
     For most tiles there is only one baseaddr, but some like BRAM have multiple
diff --git a/fuzzers/100-dsp-mskpat/generate.py b/fuzzers/100-dsp-mskpat/generate.py
index 5c76d66d..ead33cd5 100644
--- a/fuzzers/100-dsp-mskpat/generate.py
+++ b/fuzzers/100-dsp-mskpat/generate.py
@@ -14,7 +14,8 @@ with open('params.csv', 'r') as f:
         pattern = int(d['pattern'])
 
         for i in range(48):
-            segmk.add_site_tag(d['site'], "%s.MASK[%d]" % (dsp, i), (mask >> i) & 1)
+            segmk.add_site_tag(
+                d['site'], "%s.MASK[%d]" % (dsp, i), (mask >> i) & 1)
             segmk.add_site_tag(
                 d['site'], "%s.PATTERN[%d]" % (dsp, i), (pattern >> i) & 1)
 
diff --git a/fuzzers/100-dsp-mskpat/top.py b/fuzzers/100-dsp-mskpat/top.py
index cb1537fa..a64915cb 100644
--- a/fuzzers/100-dsp-mskpat/top.py
+++ b/fuzzers/100-dsp-mskpat/top.py
@@ -34,8 +34,8 @@ module top();
 
     sites = list(gen_sites())
     for (tile_name, site_name) in sites:
-        mask = random.randint(0, 2**48-1)
-        pattern = random.randint(0, 2**48-1)
+        mask = random.randint(0, 2**48 - 1)
+        pattern = random.randint(0, 2**48 - 1)
         lines.append((tile_name, site_name, mask, pattern))
 
         print(