Hand the docs examples coroutine event handlers

Every example which bound a callback wrote it as a lambda, and a lambda cannot
be awaited. They are named coroutines now, which is also the shape the guides
tell people to write.

Author: Archmonger

docs/source/guides/adding-interactivity/components-with-state/_examples/adding_state_variable/main.py

@@ -12,7 +12,7 @@
 def Gallery():
     index, set_index = hooks.use_state(0)
 
-    def handle_click(event):
+    async def handle_click(event):
         set_index(index + 1)
 
     bounded_index = index % len(sculpture_data)

docs/source/guides/adding-interactivity/components-with-state/_examples/isolated_state/main.py

@@ -13,10 +13,10 @@ def Gallery():
     index, set_index = hooks.use_state(0)
     show_more, set_show_more = hooks.use_state(False)
 
-    def handle_next_click(event):
+    async def handle_next_click(event):
         set_index(index + 1)
 
-    def handle_more_click(event):
+    async def handle_more_click(event):
         set_show_more(not show_more)
 
     bounded_index = index % len(sculpture_data)

docs/source/guides/adding-interactivity/components-with-state/_examples/multiple_state_variables/main.py

@@ -13,10 +13,10 @@ def Gallery():
     index, set_index = hooks.use_state(0)
     show_more, set_show_more = hooks.use_state(False)
 
-    def handle_next_click(event):
+    async def handle_next_click(event):
         set_index(index + 1)
 
-    def handle_more_click(event):
+    async def handle_more_click(event):
         set_show_more(not show_more)
 
     bounded_index = index % len(sculpture_data)

docs/source/guides/adding-interactivity/components-with-state/_examples/when_variables_are_not_enough/main.py

@@ -19,7 +19,7 @@
 def Gallery():
     index = 0
 
-    def handle_click(event):
+    async def handle_click(event):
         index = index + 1
 
     bounded_index = index % len(sculpture_data)

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/dict_remove.py

@@ -7,20 +7,20 @@ def Definitions():
     definition_to_add, set_definition_to_add = use_state(None)
     all_terms, set_all_terms = use_state({})
 
-    def handle_term_to_add_change(event):
+    async def handle_term_to_add_change(event):
         set_term_to_add(event["target"]["value"])
 
-    def handle_definition_to_add_change(event):
+    async def handle_definition_to_add_change(event):
         set_definition_to_add(event["target"]["value"])
 
-    def handle_add_click(event):
+    async def handle_add_click(event):
         if term_to_add and definition_to_add:
             set_all_terms({**all_terms, term_to_add: definition_to_add})
             set_term_to_add(None)
             set_definition_to_add(None)
 
-    def make_delete_click_handler(term_to_delete):
-        def handle_click(event):
+    async def make_delete_click_handler(term_to_delete):
+        async def handle_click(event):
             set_all_terms({t: d for t, d in all_terms.items() if t != term_to_delete})
 
         return handle_click

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/dict_update.py

@@ -11,13 +11,13 @@ def Form():
         }
     )
 
-    def handle_first_name_change(event):
+    async def handle_first_name_change(event):
         set_person({**person, "first_name": event["target"]["value"]})
 
-    def handle_last_name_change(event):
+    async def handle_last_name_change(event):
         set_person({**person, "last_name": event["target"]["value"]})
 
-    def handle_email_change(event):
+    async def handle_email_change(event):
         set_person({**person, "email": event["target"]["value"]})
 
     return html.div(

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/list_insert.py

@@ -6,10 +6,10 @@ def ArtistList():
     artist_to_add, set_artist_to_add = use_state("")
     artists, set_artists = use_state([])
 
-    def handle_change(event):
+    async def handle_change(event):
         set_artist_to_add(event["target"]["value"])
 
-    def handle_click(event):
+    async def handle_click(event):
         if artist_to_add and artist_to_add not in artists:
             set_artists([*artists, artist_to_add])
             set_artist_to_add("")

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/list_re_order.py

@@ -7,10 +7,10 @@ def ArtistList():
         ["Marta Colvin Andrade", "Lamidi Olonade Fakeye", "Louise Nevelson"]
     )
 
-    def handle_sort_click(event):
+    async def handle_sort_click(event):
         set_artists(sorted(artists))
 
-    def handle_reverse_click(event):
+    async def handle_reverse_click(event):
         set_artists(list(reversed(artists)))
 
     return html.div(

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/list_remove.py

@@ -8,16 +8,16 @@ def ArtistList():
         ["Marta Colvin Andrade", "Lamidi Olonade Fakeye", "Louise Nevelson"]
     )
 
-    def handle_change(event):
+    async def handle_change(event):
         set_artist_to_add(event["target"]["value"])
 
-    def handle_add_click(event):
+    async def handle_add_click(event):
         if artist_to_add not in artists:
             set_artists([*artists, artist_to_add])
             set_artist_to_add("")
 
-    def make_handle_delete_click(index):
-        def handle_click(event):
+    async def make_handle_delete_click(index):
+        async def handle_click(event):
             set_artists(artists[:index] + artists[index + 1 :])
 
         return handle_click

docs/source/guides/adding-interactivity/dangers-of-mutability/_examples/list_replace.py

@@ -5,8 +5,8 @@
 def CounterList():
     counters, set_counters = use_state([0, 0, 0])
 
-    def make_increment_click_handler(index):
-        def handle_click(event):
+    async def make_increment_click_handler(index):
+        async def handle_click(event):
             new_value = counters[index] + 1
             set_counters([*counters[:index], new_value, *counters[index + 1 :]])