MNT: switch to using ts*100 as int for image list timestamp

tacaswell · tacaswell · commit 1795f7ecddae · 2023-06-15T14:35:20.000-04:00
The factor of 100 reduces the window of collisions to 10ms which is an
acceptable risk.
diff --git a/lib/matplotlib/testing/decorators.py b/lib/matplotlib/testing/decorators.py
@@ -604,13 +604,13 @@ def _load_blame(target_file):
 def _write_imagelist(data, *, target_file):
     with open(target_file, "w") as fout:
         for fname, v in sorted(data.items()):
-            fout.write(f"{fname}:{v['rev']}:{v['ts']}\n")
+            fout.write(f"{fname}:{v['rev']}:{int(v['ts'])}\n")
 
 
 def _rev_fname(fname, *, target_file="image_list.txt"):
     data = _load_imagelist()
     old_rev = data[fname]["rev"]
-    data[fname] = {"rev": old_rev + 1, "ts": time.time()}
+    data[fname] = {"rev": old_rev + 1, "ts": time.time()*100}
     _write_imagelist(data)
 
 
