fix convert_unspecified_to_localhost pytype check error

Fix tab to space

aiosmtpd/controller.py

@@ -88,13 +88,14 @@ def is_unspecified_address(address: str) -> bool:
 @public
 def convert_unspecified_to_localhost(
         address: str
-) -> Literal["::1", "127.0.0.1"]:
+) -> str:
+    localhost = get_localhost()
     address_dict = {
-        "": get_localhost(),
+        "": localhost,
         "0.0.0.0": "127.0.0.1", # nosec
         "::": "::1", # nosec
     }
-    return address_dict.get(address, get_localhost())
+    return str(address_dict.get(address, localhost))
 
 
 class _FakeServer(asyncio.StreamReaderProtocol):

setup.cfg

@@ -73,8 +73,8 @@ ignore =
     # black conflicts with E123 & E133
     E123
     E133
-	# E261 conflicts with bandit ignore syntax
-	E261
+    # E261 conflicts with bandit ignore syntax
+    E261
     # W503 conflicts with PEP8...
     W503
     # W293 is a bit too noisy. Many files have been edited using editors that do not remove spaces from blank lines.
@@ -83,16 +83,16 @@ ignore =
     E203
     # Sometimes we prefer the func()-based creation, not literal, for readability
     C408
-	# Keeping variable names helps to understand the code
-	PIE781
+    # Keeping variable names helps to understand the code
+    PIE781
     # Sometimes we need to catch Exception broadly
     PIE786
-	# Custom type required
-	PIE795
-	# Some classes need to be used for inheritance and are not unnecessary
-	PIE798
-	# Some data must be inserted and cannot be pre-initialized
-	PIE799
+    # Custom type required
+    PIE795
+    # Some classes need to be used for inheritance and are not unnecessary
+    PIE798
+    # Some data must be inserted and cannot be pre-initialized
+    PIE799
     # We don't really care about pytest.fixture vs pytest.fixture()
     PT001
     # Good idea, but too many changes. Remove this in the future, and create separate PR
@@ -107,8 +107,8 @@ ignore =
     ANN003
     # We have too many "if..elif..else: raise" structures that does not convert well to "error-first" design
     SIM106
-	# Dataclasses were introduced with PEP 557 in Python 3.7 but we need support 3.6
-	SIM119
+    # Dataclasses were introduced with PEP 557 in Python 3.7 but we need support 3.6
+    SIM119
 per-file-ignores =
     aiosmtpd/tests/test_*:ANN001
     aiosmtpd/tests/test_proxyprotocol.py:DUO102