refactor: use removeprefix/removesuffix for string operations

Replace manual string slicing patterns with Python 3.9+ removeprefix/removesuffix
methods for cleaner, more readable code that explicitly shows intent to remove
specific prefixes or suffixes.

Author: danceratopz

src/ethereum_test_fixtures/collector.py

@@ -34,9 +34,9 @@ class TestInfo:
     def strip_test_name(cls, name: str) -> str:
         """Remove test prefix from a python test case name."""
         if name.startswith(cls.test_prefix):
-            return name[len(cls.test_prefix) :]
+            return name.removeprefix(cls.test_prefix)
         if name.endswith(cls.filler_suffix):
-            return name[: -len(cls.filler_suffix)]
+            return name.removesuffix(cls.filler_suffix)
         return name
 
     def get_name_and_parameters(self) -> Tuple[str, str]:

src/ethereum_test_rpc/rpc.py

@@ -71,7 +71,7 @@ def __init_subclass__(cls) -> None:
         """Set namespace of the RPC class to the lowercase of the class name."""
         namespace = cls.__name__
         if namespace.endswith("RPC"):
-            namespace = namespace[:-3]
+            namespace = namespace.removesuffix("RPC")
         cls.namespace = namespace.lower()
 
     def post_request(self, method: str, *params: Any, extra_headers: Dict | None = None) -> Any:

src/pytest_plugins/consume/consume.py

@@ -214,16 +214,16 @@ def from_string(cls, pattern: str) -> "SimLimitBehavior":
             return cls(pattern=".*", collectonly=True)
 
         if pattern.startswith("collectonly:id:"):
-            literal_id = pattern[len("collectonly:id:") :]
+            literal_id = pattern.removeprefix("collectonly:id:")
             if not literal_id:
                 raise ValueError("Empty literal ID provided.")
             return cls(pattern=cls._escape_id(literal_id), collectonly=True)
 
         if pattern.startswith("collectonly:"):
-            return cls(pattern=pattern[len("collectonly:") :], collectonly=True)
+            return cls(pattern=pattern.removeprefix("collectonly:"), collectonly=True)
 
         if pattern.startswith("id:"):
-            literal_id = pattern[len("id:") :]
+            literal_id = pattern.removeprefix("id:")
             if not literal_id:
                 raise ValueError("Empty literal ID provided.")
             return cls(pattern=cls._escape_id(literal_id))
@@ -442,4 +442,4 @@ def pytest_collection_modifyitems(items):
         original_name = item.originalname
         remove = f"{original_name}["
         if item.name.startswith(remove):
-            item.name = item.name[len(remove) : -1]
+            item.name = item.name.removeprefix(remove)[:-1]

src/pytest_plugins/pytest_hive/pytest_hive.py

@@ -270,7 +270,7 @@ def hive_test(request, test_suite: HiveTestSuite):
                     call_out = stdout
                     # If call output starts with setup output, strip it
                     if call_out.startswith(setup_out):
-                        stdout = call_out[len(setup_out) :]
+                        stdout = call_out.removeprefix(setup_out)
 
                 captured.append(
                     f"# Captured Output from Test {phase.capitalize()}\n\n"