diff --git a/homeassistant/components/blueprint/importer.py b/homeassistant/components/blueprint/importer.py
index c10da532324..32fe7b56495 100644
--- a/homeassistant/components/blueprint/importer.py
+++ b/homeassistant/components/blueprint/importer.py
@@ -173,8 +173,7 @@ async def fetch_blueprint_from_github_url(
 
     parsed_import_url = yarl.URL(import_url)
     suggested_filename = f"{parsed_import_url.parts[1]}/{parsed_import_url.parts[-1]}"
-    if suggested_filename.endswith(".yaml"):
-        suggested_filename = suggested_filename[:-5]
+    suggested_filename = suggested_filename.removesuffix(".yaml")
 
     return ImportedBlueprint(suggested_filename, raw_yaml, blueprint)
 
diff --git a/homeassistant/components/fritz/config_flow.py b/homeassistant/components/fritz/config_flow.py
index 920ecda1c52..244c7036a1c 100644
--- a/homeassistant/components/fritz/config_flow.py
+++ b/homeassistant/components/fritz/config_flow.py
@@ -166,8 +166,7 @@ class FritzBoxToolsFlowHandler(ConfigFlow, domain=DOMAIN):
 
         uuid: str | None
         if uuid := discovery_info.upnp.get(ssdp.ATTR_UPNP_UDN):
-            if uuid.startswith("uuid:"):
-                uuid = uuid[5:]
+            uuid = uuid.removeprefix("uuid:")
             await self.async_set_unique_id(uuid)
             self._abort_if_unique_id_configured({CONF_HOST: self._host})
 
diff --git a/homeassistant/components/fritzbox/config_flow.py b/homeassistant/components/fritzbox/config_flow.py
index ffec4a9ea29..c0e0f62285a 100644
--- a/homeassistant/components/fritzbox/config_flow.py
+++ b/homeassistant/components/fritzbox/config_flow.py
@@ -122,8 +122,7 @@ class FritzboxConfigFlow(ConfigFlow, domain=DOMAIN):
             return self.async_abort(reason="ignore_ip6_link_local")
 
         if uuid := discovery_info.upnp.get(ssdp.ATTR_UPNP_UDN):
-            if uuid.startswith("uuid:"):
-                uuid = uuid[5:]
+            uuid = uuid.removeprefix("uuid:")
             await self.async_set_unique_id(uuid)
             self._abort_if_unique_id_configured({CONF_HOST: host})
 
diff --git a/homeassistant/components/private_ble_device/config_flow.py b/homeassistant/components/private_ble_device/config_flow.py
index c7311e8691b..90340bc70fa 100644
--- a/homeassistant/components/private_ble_device/config_flow.py
+++ b/homeassistant/components/private_ble_device/config_flow.py
@@ -20,8 +20,7 @@ CONF_IRK = "irk"
 
 
 def _parse_irk(irk: str) -> bytes | None:
-    if irk.startswith("irk:"):
-        irk = irk[4:]
+    irk = irk.removeprefix("irk:")
 
     if irk.endswith("="):
         try:
diff --git a/homeassistant/components/samsungtv/config_flow.py b/homeassistant/components/samsungtv/config_flow.py
index 837651f9900..b3dabca1df4 100644
--- a/homeassistant/components/samsungtv/config_flow.py
+++ b/homeassistant/components/samsungtv/config_flow.py
@@ -59,7 +59,7 @@ DATA_SCHEMA = vol.Schema({vol.Required(CONF_HOST): str, vol.Required(CONF_NAME):
 
 
 def _strip_uuid(udn: str) -> str:
-    return udn[5:] if udn.startswith("uuid:") else udn
+    return udn.removeprefix("uuid:")
 
 
 def _entry_is_complete(
diff --git a/homeassistant/components/tasmota/config_flow.py b/homeassistant/components/tasmota/config_flow.py
index 9deb846f8e2..5b1adc839ac 100644
--- a/homeassistant/components/tasmota/config_flow.py
+++ b/homeassistant/components/tasmota/config_flow.py
@@ -66,8 +66,7 @@ class FlowHandler(ConfigFlow, domain=DOMAIN):
         if user_input is not None:
             bad_prefix = False
             prefix = user_input[CONF_DISCOVERY_PREFIX]
-            if prefix.endswith("/#"):
-                prefix = prefix[:-2]
+            prefix = prefix.removesuffix("/#")
             try:
                 valid_subscribe_topic(f"{prefix}/#")
             except vol.Invalid:
diff --git a/homeassistant/components/webostv/config_flow.py b/homeassistant/components/webostv/config_flow.py
index c62ecaa78cf..55dd45153f7 100644
--- a/homeassistant/components/webostv/config_flow.py
+++ b/homeassistant/components/webostv/config_flow.py
@@ -105,8 +105,7 @@ class FlowHandler(ConfigFlow, domain=DOMAIN):
 
         uuid = discovery_info.upnp[ssdp.ATTR_UPNP_UDN]
         assert uuid
-        if uuid.startswith("uuid:"):
-            uuid = uuid[5:]
+        uuid = uuid.removeprefix("uuid:")
         await self.async_set_unique_id(uuid)
         self._abort_if_unique_id_configured({CONF_HOST: self._host})
 
diff --git a/homeassistant/util/network.py b/homeassistant/util/network.py
index 08a2c2a3967..70d7dc80505 100644
--- a/homeassistant/util/network.py
+++ b/homeassistant/util/network.py
@@ -98,8 +98,7 @@ def is_host_valid(host: str) -> bool:
         return False
     if re.match(r"^[0-9\.]+$", host):  # reject invalid IPv4
         return False
-    if host.endswith("."):  # dot at the end is correct
-        host = host[:-1]
+    host = host.removesuffix(".")
     allowed = re.compile(r"(?!-)[A-Z\d\-]{1,63}(?<!-)$", re.IGNORECASE)
     return all(allowed.match(x) for x in host.split("."))