diff --git a/customcmd/parser/terms.py b/customcmd/parser/terms.py
index 1b33136..30c8a73 100644
--- a/customcmd/parser/terms.py
+++ b/customcmd/parser/terms.py
@@ -1,4 +1,14 @@
-from typing import Any, Awaitable, Callable, Concatenate, ParamSpec, TypeVar, Union, TYPE_CHECKING
+from typing import (
+    Any,
+    Generic,
+    Awaitable,
+    Callable,
+    Concatenate,
+    ParamSpec,
+    TypeVar,
+    Union,
+    TYPE_CHECKING,
+)
 from functools import wraps, reduce
 import operator
 
@@ -22,9 +32,9 @@ __all__ = (
     "ternary_term",
     "run_function",
     "cascade_term",
-    'ExecutorTerm',
-    'LateTerm',
-    'lazy_term',
+    "ExecutorTerm",
+    "LateTerm",
+    "lazy_term",
 )
 
 P = ParamSpec("P")
@@ -37,7 +47,7 @@ T2 = TypeVar("T2")
 TermResult = TypeVar("TermResult")
 
 
-class ExecutorTerm[TermResult]:
+class ExecutorTerm(Generic[TermResult]):
     # May add more here for initial parsing context
 
     def __init__(self, *args, node_text: str | None = None, **kwargs):
@@ -145,7 +155,7 @@ async def cmdarg_term(ctx, argn: int, greedy: bool) -> str:
     if greedy:
         return " ".join(args[argn:])
     elif argn >= len(args):
-        return ''
+        return ""
     else:
         return args[argn]
 
@@ -158,33 +168,36 @@ async def cascade_term(ctx, *terms: ExecutorTerm):
             return eval
     return ""
 
+
 @lazy_term
 async def command_shell(ctx, component_term: ExecutorTerm):
     if isinstance(component_term, ExecutorTerm):
         result = await component_term(ctx)
     else:
-        logger.warning(
-            f"command_shell LazyTerm stringifying non-term {component_term}"
-        )
+        logger.warning(f"command_shell LazyTerm stringifying non-term {component_term}")
         result = component_term
     return str(result)
 
+
 @lazy_term
 async def define_equal(ctx, var: str, value: ExecutorTerm):
     ctx.this_scope[var] = await value.execute(ctx)
     return None
 
+
 @lazy_term
 async def define_walrus(ctx, var: str, value: ExecutorTerm):
     result = await value.execute(ctx)
     ctx.this_scope[var] = result
     return result
 
-@lazy_term 
+
+@lazy_term
 async def define_term(ctx, var: str, value: ExecutorTerm):
     ctx.this_scope[var] = value
     return None
 
+
 @lazy_term
 async def run_function(ctx, var: ExecutorTerm, *args: ExecutorTerm):
     varlue = await var.execute(ctx)
@@ -196,13 +209,14 @@ async def run_function(ctx, var: ExecutorTerm, *args: ExecutorTerm):
     else:
         return await varlue(ctx, *argues)
 
-@lazy_term 
+
+@lazy_term
 async def get_var(ctx, root: str | ExecutorTerm, *attrs: str):
     if isinstance(root, ExecutorTerm):
         value = await root.execute(ctx)
-        name = [root.text or '']
+        name = [root.text or ""]
     elif root not in ctx.scope:
-            return ' '.join((root, *attrs))
+        return " ".join((root, *attrs))
     else:
         value = ctx.scope[root]
         name = [root]
@@ -213,39 +227,41 @@ async def get_var(ctx, root: str | ExecutorTerm, *attrs: str):
 
     for attr in attrs:
         try:
-            value = getattr(value, '_exec_attr_'+attr)
+            value = getattr(value, "_exec_attr_" + attr)
             name.append(attr)
         except AttributeError:
             raise CommandValueError(f"{'.'.join(name)} has no attribute {attr}")
     return value
 
-@lazy_term 
+
+@lazy_term
 async def compare(ctx, term1: ExecutorTerm, op: str, term2: ExecutorTerm):
     opmap = {
-        '==': operator.eq,
-        '!=': operator.ne,
-        '>': operator.gt,
-        '>=': operator.ge,
-        '<': operator.lt,
-        '<=': operator.le,
+        "==": operator.eq,
+        "!=": operator.ne,
+        ">": operator.gt,
+        ">=": operator.ge,
+        "<": operator.lt,
+        "<=": operator.le,
     }
     value1 = await term1.execute(ctx)
     value2 = await term2.execute(ctx)
     oppy = opmap[op]
     return oppy(value1, value2)
 
+
 @lazy_term
 async def binop(ctx, op: str, *terms):
     opmap = {
-        '||': operator.or_,
-        '&&': operator.and_,
-        '+': operator.add,
-        '-': operator.sub,
-        '*': operator.mul,
-        '**': operator.pow,
-        '/': operator.truediv,
-        '//': operator.floordiv,
-        '%': operator.mod,
+        "||": operator.or_,
+        "&&": operator.and_,
+        "+": operator.add,
+        "-": operator.sub,
+        "*": operator.mul,
+        "**": operator.pow,
+        "/": operator.truediv,
+        "//": operator.floordiv,
+        "%": operator.mod,
     }
     # Left associative
     oppy = opmap[op]