fix coverage after dropping 3.7 (#91)

Author: samuelcolvin

dirty_equals/_base.py

@@ -1,11 +1,5 @@
 from abc import ABCMeta
-from typing import TYPE_CHECKING, Any, Dict, Generic, Iterable, Optional, Tuple, TypeVar
-
-try:
-    from typing import Protocol
-except ImportError:
-    # Python 3.7 doesn't have Protocol
-    Protocol = object  # type: ignore[assignment]
+from typing import TYPE_CHECKING, Any, Dict, Generic, Iterable, Optional, Protocol, Tuple, TypeVar
 
 from ._utils import Omit
 

dirty_equals/_other.py

@@ -6,19 +6,13 @@
 from enum import Enum
 from functools import lru_cache
 from ipaddress import IPv4Address, IPv4Network, IPv6Address, IPv6Network, ip_network
-from typing import TYPE_CHECKING, Any, Callable, TypeVar, Union, overload
+from typing import TYPE_CHECKING, Any, Callable, Literal, TypeVar, Union, overload
 from uuid import UUID
 
 from ._base import DirtyEquals
 from ._dict import IsDict
 from ._utils import Omit, plain_repr
 
-try:
-    from typing import Literal
-except ImportError:
-    from typing_extensions import Literal  # type: ignore[assignment]
-
-
 if TYPE_CHECKING:
     from pydantic import TypeAdapter
 
@@ -233,7 +227,7 @@ def __init__(
             )
 
             self.ValidationError = ValidationError
-        except ImportError as e:
+        except ImportError as e:  # pragma: no cover
             raise ImportError('Pydantic V2 is not installed, run `pip install dirty-equals[pydantic]`') from e
         url_type_mappings = {
             AnyUrl: any_url,

dirty_equals/_strings.py

@@ -1,14 +1,9 @@
 import re
-from typing import Any, Optional, Pattern, Tuple, Type, TypeVar, Union
+from typing import Any, Literal, Optional, Pattern, Tuple, Type, TypeVar, Union
 
 from ._base import DirtyEquals
 from ._utils import Omit, plain_repr
 
-try:
-    from typing import Literal
-except ImportError:
-    from typing_extensions import Literal  # type: ignore[assignment]
-
 T = TypeVar('T', str, bytes)
 
 __all__ = 'IsStr', 'IsBytes', 'IsAnyStr'