Use signal instead of s for readability

vallsv · vallsv · commit 0a738aefda48 · 2021-02-08T14:58:09.000+01:00
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
@@ -199,14 +199,16 @@ def __setstate__(self, state):
 
     def connect(self, s, func):
         """Register *func* to be called when signal *s* is generated."""
-        self._func_cid_map.setdefault(s, {})
+        signal = s
+        self._func_cid_map.setdefault(signal, {})
         proxy = _weak_or_strong_ref(func, self._remove_proxy)
-        if proxy in self._func_cid_map[s]:
-            return self._func_cid_map[s][proxy]
+        if proxy in self._func_cid_map[signal]:
+            return self._func_cid_map[signal][proxy]
+
         cid = next(self._cid_gen)
-        self._func_cid_map[s][proxy] = cid
-        self.callbacks.setdefault(s, {})
-        self.callbacks[s][cid] = proxy
+        self._func_cid_map[signal][proxy] = cid
+        self.callbacks.setdefault(signal, {})
+        self.callbacks[signal][cid] = proxy
         return cid
 
     # Keep a reference to sys.is_finalizing, as sys may have been cleared out
