treewide: fix 'ruff check' errors

This is mostly about unused imports.

A couple errors remain, but are fine in my book (using `l` as a variable
name, assigning a lambda to a variable).

2019/d03/ex2/ex2.py

@@ -2,7 +2,7 @@
 
 import sys
 from fractions import Fraction
-from typing import Dict, List, NamedTuple, Optional
+from typing import List, NamedTuple, Optional
 
 
 class Point(NamedTuple):

2019/d05/ex1/ex1.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python
 
-import sys
-from copy import deepcopy
 from enum import IntEnum
 from typing import List, NamedTuple
 

2019/d07/ex2/ex2.py

@@ -5,7 +5,7 @@ import sys
 from copy import deepcopy
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Callable, List, NamedTuple
+from typing import List, NamedTuple
 
 
 class ParameterMode(IntEnum):

2019/d09/ex1/ex1.py

@@ -1,11 +1,10 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from copy import deepcopy
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Callable, List, NamedTuple
+from typing import List, NamedTuple
 
 
 class ParameterMode(IntEnum):

2019/d09/ex2/ex2.py

@@ -1,11 +1,10 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from copy import deepcopy
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Callable, List, NamedTuple
+from typing import List, NamedTuple
 
 
 class ParameterMode(IntEnum):

2019/d10/ex2/ex2.py

@@ -4,7 +4,6 @@ import sys
 from cmath import phase
 from itertools import groupby
 from math import gcd, pi
-from pprint import pprint
 from typing import NamedTuple, Set, Tuple
 
 

2019/d13/ex1/ex1.py

@@ -3,7 +3,7 @@
 import sys
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Dict, Iterable, List, NamedTuple, Tuple, TypeVar
+from typing import Iterable, List, NamedTuple, Tuple, TypeVar
 
 
 class ParameterMode(IntEnum):

2019/d13/ex2/ex2.py

@@ -3,7 +3,7 @@
 import sys
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Dict, Iterable, List, NamedTuple, Tuple, TypeVar
+from typing import Iterable, List, NamedTuple, Tuple, TypeVar
 
 
 class ParameterMode(IntEnum):

2019/d16/ex2/ex2.py

@@ -2,8 +2,6 @@
 
 import sys
 from functools import reduce
-from itertools import chain, cycle
-from typing import Iterable, List
 
 
 def main() -> None:

2019/d19/ex2/ex2.py

@@ -4,7 +4,7 @@ import sys
 from copy import deepcopy
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Iterator, List, NamedTuple, Tuple
+from typing import List, NamedTuple
 
 
 class ParameterMode(IntEnum):

2020/d07/ex2/ex2.py

@@ -2,8 +2,6 @@
 
 import re
 import sys
-from collections import defaultdict
-from copy import deepcopy
 from dataclasses import dataclass
 from typing import Dict, List, Set, Tuple
 

2020/d18/ex2/ex2.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 import sys
-from typing import Callable, Dict, List
+from typing import List
 
 """
 E : T [ * T ]*

2020/d20/ex2/ex2.py

@@ -5,7 +5,6 @@ import itertools
 import math
 import sys
 from collections import defaultdict
-from copy import deepcopy
 from typing import Dict, Iterator, List, Set, Tuple
 
 Tile = List[List[str]]

2020/d23/ex1/ex1.py

@@ -2,7 +2,7 @@
 
 import itertools
 import sys
-from typing import List, Tuple
+from typing import List
 
 
 def solve(circle: List[int]) -> int:

2020/d23/ex2/ex2.py

@@ -2,7 +2,7 @@
 
 import itertools
 import sys
-from typing import List, Tuple
+from typing import List
 
 
 def solve(circle: List[int]) -> int:

2020/d24/ex2/ex2.py

@@ -3,7 +3,6 @@
 import itertools
 import sys
 from collections import defaultdict
-from copy import deepcopy
 from typing import Dict, Iterator, List, Tuple
 
 Offset = Tuple[int, int]

2021/d01/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List
 

2021/d02/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List
 

2021/d02/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List
 

2021/d03/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List
 

2021/d03/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from copy import deepcopy
 from typing import List

2021/d06/ex1/ex1.py

@@ -3,7 +3,6 @@
 import itertools
 import sys
 from collections import Counter
-from dataclasses import dataclass
 from typing import Iterator, List, TypeVar
 
 T = TypeVar("T")

2021/d06/ex2/ex2.py

@@ -3,7 +3,6 @@
 import itertools
 import sys
 from collections import Counter
-from dataclasses import dataclass
 from typing import Iterator, List, TypeVar
 
 T = TypeVar("T")

2021/d07/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List
 

2021/d07/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from math import ceil, floor
 from typing import List

2021/d08/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from dataclasses import dataclass
 from typing import Dict, List, Set

2021/d09/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import Iterator, List, Tuple
 

2021/d09/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import Iterator, List, Tuple
 

2021/d10/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import List, Optional, cast
 

2021/d10/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from typing import Iterator, List, Optional
 

2021/d11/ex1/ex1.py

@@ -2,7 +2,6 @@
 
 import itertools
 import sys
-from copy import deepcopy
 from typing import Iterator, List, Set, Tuple
 
 Grid = List[List[int]]

2021/d11/ex2/ex2.py

@@ -2,7 +2,6 @@
 
 import itertools
 import sys
-from copy import deepcopy
 from typing import Iterator, List, Set, Tuple
 
 Grid = List[List[int]]

2021/d12/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from collections import defaultdict
 from typing import Dict, List, Set

2021/d12/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
 import sys
 from collections import defaultdict
 from typing import Dict, List, Set

2021/d15/ex1/ex1.py

@@ -1,9 +1,8 @@
 #!/usr/bin/env python
 
 import heapq
-import itertools
 import sys
-from typing import Iterator, List, NamedTuple, Set, Tuple
+from typing import Iterator, List, NamedTuple, Set
 
 
 class Point(NamedTuple):

2021/d15/ex2/ex2.py

@@ -1,9 +1,8 @@
 #!/usr/bin/env python
 
 import heapq
-import itertools
 import sys
-from typing import Iterator, List, NamedTuple, Set, Tuple
+from typing import Iterator, List, NamedTuple, Set
 
 
 class Point(NamedTuple):

2021/d16/ex1/ex1.py

@@ -5,7 +5,7 @@ import functools
 import itertools
 import sys
 from dataclasses import dataclass
-from typing import Iterable, Iterator, List, Tuple, TypeVar
+from typing import Iterable, Iterator, List, Tuple
 
 RawPacket = List[bool]
 

2021/d16/ex2/ex2.py

@@ -6,7 +6,7 @@ import itertools
 import math
 import sys
 from dataclasses import dataclass
-from typing import Callable, Dict, Iterable, Iterator, List, Tuple, TypeVar
+from typing import Callable, Dict, Iterable, Iterator, List, Tuple
 
 RawPacket = List[bool]
 

2021/d17/ex1/ex1.py

@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 
 import itertools
-import math
 import sys
 from typing import Iterator, List, NamedTuple
 

2021/d17/ex2/ex2.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python
 
-import itertools
-import math
 import sys
 from typing import Iterator, List, NamedTuple
 

2021/d18/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import functools
 import itertools
 import sys
 from copy import deepcopy

2021/d19/ex1/ex1.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import functools
 import itertools
 import sys
 from dataclasses import dataclass

2021/d19/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import functools
 import itertools
 import sys
 from dataclasses import dataclass

2021/d22/ex1/ex1.py

@@ -3,7 +3,7 @@
 import functools
 import itertools
 import sys
-from typing import Iterator, List, NamedTuple, Optional, Set, Tuple, cast
+from typing import List, NamedTuple, Optional, Set, Tuple
 
 
 class Point(NamedTuple):

2021/d22/ex2/ex2.py

@@ -3,7 +3,7 @@
 import functools
 import itertools
 import sys
-from typing import Iterator, List, NamedTuple, Optional, Set, Tuple, cast
+from typing import List, NamedTuple, Optional, Set, Tuple
 
 
 class Point(NamedTuple):

2021/d23/ex1/ex1.py

@@ -3,7 +3,7 @@
 import enum
 import functools
 import sys
-from typing import Iterator, List, NamedTuple, Optional, Tuple, cast
+from typing import Iterator, List, NamedTuple, Optional, Tuple
 
 
 class Point(NamedTuple):

2021/d23/ex2/ex2.py

@@ -3,7 +3,7 @@
 import enum
 import functools
 import sys
-from typing import Iterator, List, NamedTuple, Optional, Tuple, cast
+from typing import Iterator, List, NamedTuple, Optional, Tuple
 
 
 class Point(NamedTuple):

2021/d25/ex1/ex1.py

@@ -1,9 +1,8 @@
 #!/usr/bin/env python
 
-import enum
 import itertools
 import sys
-from typing import Iterable, Iterator, List, NamedTuple, Set
+from typing import List, NamedTuple, Set
 
 
 class Point(NamedTuple):

2022/d18/ex2/ex2.py

@@ -2,7 +2,6 @@
 
 import itertools
 import sys
-from collections import deque
 from collections.abc import Iterator
 from typing import NamedTuple
 

2022/d21/ex1/ex1.py

@@ -25,7 +25,7 @@ class Operator(str, enum.Enum):
 
 class Monkey:
     def get_value(self, monkeys: dict[str, "Monkey"]) -> int:
-        raise NotImplemented
+        raise NotImplementedError
 
 
 @dataclasses.dataclass

2022/d21/ex2/ex2.py

@@ -93,7 +93,7 @@ class MathObserver:
 
 class Monkey:
     def get_value(self, monkeys: dict[str, "Monkey"]) -> Num:
-        raise NotImplemented
+        raise NotImplementedError
 
 
 @dataclasses.dataclass

2023/d02/ex2/ex2.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python
 
-import functools
 import math
-import operator as op
 import sys
 from collections import Counter
 from enum import StrEnum

2023/d14/ex2/ex2.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-import dataclasses
 import itertools
 import sys
 from enum import StrEnum

2023/d17/ex2/ex2.py

@@ -2,7 +2,6 @@
 
 import functools
 import heapq
-import itertools
 import sys
 from collections.abc import Iterator
 from enum import Enum