diff --git a/py/server/deephaven/csv.py b/py/server/deephaven/csv.py
index 5c6dc25102d..e87a6a02669 100644
--- a/py/server/deephaven/csv.py
+++ b/py/server/deephaven/csv.py
@@ -75,9 +75,9 @@ def read(
                 dht.byte: _JParsers.BYTE,
                 dht.char: _JParsers.CHAR,
                 dht.short: _JParsers.SHORT,
-                dht.int_: _JParsers.INT,
+                dht.int64: _JParsers.INT,
                 dht.long: _JParsers.LONG,
-                dht.float_: _JParsers.FLOAT_FAST,
+                dht.float64: _JParsers.FLOAT_FAST,
                 dht.double: _JParsers.DOUBLE,
                 dht.string: _JParsers.STRING,
                 dht.Instant: _JParsers.DATETIME,
diff --git a/py/server/deephaven/dtypes.py b/py/server/deephaven/dtypes.py
index aa7e752d0ad..e0308072acd 100644
--- a/py/server/deephaven/dtypes.py
+++ b/py/server/deephaven/dtypes.py
@@ -85,8 +85,6 @@ def __call__(self, *args, **kwargs):
 """Signed 64bit integer type"""
 int64 = long
 """Signed 64bit integer type"""
-int_ = long
-"""Signed 64bit integer type"""
 float32 = DType(j_name="float", qst_type=_JQstType.floatType(), is_primitive=True, np_type=np.float32)
 """Single-precision floating-point number type"""
 single = float32
@@ -95,8 +93,6 @@ def __call__(self, *args, **kwargs):
 """Double-precision floating-point number type"""
 double = float64
 """Double-precision floating-point number type"""
-float_ = float64
-"""Double-precision floating-point number type"""
 string = DType(j_name="java.lang.String", qst_type=_JQstType.stringType(), np_type=np.str_)
 """String type"""
 Character = DType(j_name="java.lang.Character")
@@ -143,8 +139,6 @@ def __call__(self, *args, **kwargs):
 """64bit integer array type"""
 int64_array = long_array
 """64bit integer array type"""
-int_array = long_array
-"""64bit integer array type"""
 single_array = DType(j_name='[F')
 """Single-precision floating-point array type"""
 float32_array = single_array
@@ -153,8 +147,6 @@ def __call__(self, *args, **kwargs):
 """Double-precision floating-point array type"""
 float64_array = double_array
 """Double-precision floating-point array type"""
-float_array = double_array
-"""Double-precision floating-point array type"""
 string_array = DType(j_name='[Ljava.lang.String;')
 """Java String array type"""
 boolean_array = DType(j_name='[Ljava.lang.Boolean;')
diff --git a/py/server/deephaven/filters.py b/py/server/deephaven/filters.py
index f132a62ef94..1d684997f91 100644
--- a/py/server/deephaven/filters.py
+++ b/py/server/deephaven/filters.py
@@ -6,10 +6,9 @@
 from __future__ import annotations
 
 from enum import Enum
-from typing import List, Union
+from typing import List, Union, Sequence
 
 import jpy
-import functools
 
 from deephaven import DHError
 from deephaven._wrapper import JObjectWrapper
diff --git a/py/server/tests/test_csv.py b/py/server/tests/test_csv.py
index a4ad3330f17..08a1355c18f 100644
--- a/py/server/tests/test_csv.py
+++ b/py/server/tests/test_csv.py
@@ -16,7 +16,7 @@ def test_read_simple(self):
 
     def test_read_header(self):
         col_names = ["Strings", "Longs", "Floats"]
-        col_types = [dtypes.string, dtypes.long, dtypes.float_]
+        col_types = [dtypes.string, dtypes.long, dtypes.float64]
         table_header = {k: v for k, v in zip(col_names, col_types)}
         t = read_csv('tests/data/test_csv.csv', header=table_header)
         t_col_names = [col.name for col in t.columns]
@@ -24,7 +24,7 @@ def test_read_header(self):
 
     def test_read_error_col_type(self):
         col_names = ["Strings", "Longs", "Floats"]
-        col_types = [dtypes.string, dtypes.float_, dtypes.long]
+        col_types = [dtypes.string, dtypes.float64, dtypes.long]
         table_header = {k: v for k, v in zip(col_names, col_types)}
         with self.assertRaises(DHError) as cm:
             t = read_csv('tests/data/test_csv.csv', header=table_header)
@@ -33,7 +33,7 @@ def test_read_error_col_type(self):
 
     def test_read_error_quote(self):
         col_names = ["Strings", "Longs", "Floats"]
-        col_types = [dtypes.string, dtypes.long, dtypes.float_]
+        col_types = [dtypes.string, dtypes.long, dtypes.float64]
         table_header = {k: v for k, v in zip(col_names, col_types)}
         with self.assertRaises(DHError) as cm:
             t = read_csv('tests/data/test_csv.csv', header=table_header, quote=",")
@@ -48,7 +48,7 @@ def test_write(self):
         self.assertEqual(t_cols, [col.name for col in t.columns])
 
         col_names = ["Strings", "Longs", "Floats"]
-        col_types = [dtypes.string, dtypes.long, dtypes.float_]
+        col_types = [dtypes.string, dtypes.long, dtypes.float64]
         table_header = {k: v for k, v in zip(col_names, col_types)}
         t = read_csv('tests/data/test_csv.csv', header=table_header)
         write_csv(t, "./test_write.csv", cols=col_names)
diff --git a/py/server/tests/test_dtypes.py b/py/server/tests/test_dtypes.py
index 72782297604..5058dda1143 100644
--- a/py/server/tests/test_dtypes.py
+++ b/py/server/tests/test_dtypes.py
@@ -30,10 +30,10 @@ class DTypesTestCase(BaseTestCase):
     def test_type_alias(self):
         self.assertEqual(dtypes.byte, dtypes.int8)
         self.assertEqual(dtypes.short, dtypes.int16)
-        self.assertEqual(dtypes.int_, dtypes.int64)
+        self.assertEqual(dtypes.int64, dtypes.int64)
         self.assertEqual(dtypes.long, dtypes.int64)
-        self.assertEqual(dtypes.float_, dtypes.double)
-        self.assertEqual(dtypes.float_, dtypes.float64)
+        self.assertEqual(dtypes.float64, dtypes.double)
+        self.assertEqual(dtypes.float64, dtypes.float64)
         self.assertEqual(dtypes.double, dtypes.float64)
 
     def test_j_type(self):
@@ -41,9 +41,9 @@ def test_j_type(self):
         self.assertEqual(dtypes.byte.j_type, jpy.get_type("byte"))
         self.assertEqual(dtypes.short.j_type, jpy.get_type("short"))
         self.assertEqual(dtypes.char.j_type, jpy.get_type("char"))
-        self.assertEqual(dtypes.int_.j_type, jpy.get_type("long"))
+        self.assertEqual(dtypes.int64.j_type, jpy.get_type("long"))
         self.assertEqual(dtypes.long.j_type, jpy.get_type("long"))
-        self.assertEqual(dtypes.float_.j_type, jpy.get_type("double"))
+        self.assertEqual(dtypes.float64.j_type, jpy.get_type("double"))
         self.assertEqual(dtypes.double.j_type, jpy.get_type("double"))
         self.assertEqual(dtypes.string.j_type, jpy.get_type("java.lang.String"))
         self.assertEqual(dtypes.BigDecimal.j_type, jpy.get_type("java.math.BigDecimal"))
@@ -65,9 +65,9 @@ def test_np_type(self):
         self.assertEqual(dtypes.byte.np_type, np.int8)
         self.assertEqual(dtypes.short.np_type, np.int16)
         self.assertEqual(dtypes.char.np_type, np.dtype('uint16'))
-        self.assertEqual(dtypes.int_.np_type, np.int64)
+        self.assertEqual(dtypes.int64.np_type, np.int64)
         self.assertEqual(dtypes.long.np_type, np.int64)
-        self.assertEqual(dtypes.float_.np_type, np.float64)
+        self.assertEqual(dtypes.float64.np_type, np.float64)
         self.assertEqual(dtypes.double.np_type, np.float64)
         self.assertEqual(dtypes.string.np_type, np.str_)
         self.assertEqual(dtypes.BigDecimal.np_type, np.object_)
@@ -95,7 +95,7 @@ def test_callable(self):
         self.assertEqual(j_string.toString(), "abc")
 
     def test_array(self):
-        j_array = dtypes.array(dtypes.int_, range(5))
+        j_array = dtypes.array(dtypes.int64, range(5))
         np_array = np.frombuffer(j_array, np.int64)
         expected = np.array([0, 1, 2, 3, 4], dtype=np.int64)
         self.assertTrue(np.array_equal(np_array, expected))
@@ -136,7 +136,7 @@ def test_integer_array(self):
 
     def test_floating_array(self):
 
-        nulls = {dtypes.float_: NULL_FLOAT, dtypes.double: NULL_DOUBLE}
+        nulls = {dtypes.float64: NULL_FLOAT, dtypes.double: NULL_DOUBLE}
 
         np_array = np.array([float('nan'), 1.7976931348623157e+300, NULL_DOUBLE, 1.1, float('inf')], dtype=np.float64)
         for dt, nv in nulls.items():
diff --git a/py/server/tests/test_kafka_consumer.py b/py/server/tests/test_kafka_consumer.py
index 4a354ce2633..91c2990f4e7 100644
--- a/py/server/tests/test_kafka_consumer.py
+++ b/py/server/tests/test_kafka_consumer.py
@@ -56,7 +56,7 @@ def test_json_spec(self):
             col_defs=[('Symbol', dtypes.string),
                       ('Side', dtypes.string),
                       ('Price', dtypes.double),
-                      ('Qty', dtypes.int_),
+                      ('Qty', dtypes.int64),
                       ('Tstamp', dtypes.Instant)],
             mapping={
                 'jsymbol': 'Symbol',
@@ -70,7 +70,7 @@ def test_json_spec(self):
                 'Symbol': dtypes.string,
                 'Side': dtypes.string,
                 'Price': dtypes.double,
-                'Qty': dtypes.int_,
+                'Qty': dtypes.int64,
                 'Tstamp': dtypes.Instant
             },
             mapping={
@@ -102,7 +102,7 @@ def test_json_spec(self):
             self.assertEqual("Price", cols[5].name)
             self.assertEqual(dtypes.double, cols[5].data_type)
             self.assertEqual("Qty", cols[6].name)
-            self.assertEqual(dtypes.int_, cols[6].data_type)
+            self.assertEqual(dtypes.int64, cols[6].data_type)
             self.assertEqual("Tstamp", cols[7].name)
             self.assertEqual(dtypes.Instant, cols[7].data_type)
 
@@ -344,7 +344,7 @@ def test_json_spec_partitioned_table(self):
                 [('Symbol', dtypes.string),
                  ('Side', dtypes.string),
                  ('Price', dtypes.double),
-                 ('Qty', dtypes.int_),
+                 ('Qty', dtypes.int64),
                  ('Tstamp', dtypes.Instant)],
                 mapping={
                     'jsymbol': 'Symbol',
@@ -368,7 +368,7 @@ def test_json_spec_partitioned_table(self):
         self.assertEqual("Price", cols[5].name)
         self.assertEqual(dtypes.double, cols[5].data_type)
         self.assertEqual("Qty", cols[6].name)
-        self.assertEqual(dtypes.int_, cols[6].data_type)
+        self.assertEqual(dtypes.int64, cols[6].data_type)
         self.assertEqual("Tstamp", cols[7].name)
         self.assertEqual(dtypes.Instant, cols[7].data_type)
 
diff --git a/py/server/tests/test_udf_scalar_args.py b/py/server/tests/test_udf_scalar_args.py
index 97615b1903c..f5fe4ac759e 100644
--- a/py/server/tests/test_udf_scalar_args.py
+++ b/py/server/tests/test_udf_scalar_args.py
@@ -548,7 +548,7 @@ def f2(x: float) -> Optional[int]:
                 ...
 
             t = empty_table(1).update("X = f2(f1(ii))")
-            self.assertEqual(t.columns[0].data_type, dtypes.int_)
+            self.assertEqual(t.columns[0].data_type, dtypes.int64)
 
         with self.subTest("jpy.JType"):
             def f1(x: jpy.JType) -> bool:
@@ -594,7 +594,7 @@ def use_c(c: Sequence) -> int:
 
             t = empty_table(3).update(["C = make_c()", "V = use_c(C)"])
             self.assertIsNotNone(t)
-            self.assertEqual(t.columns[1].data_type, dtypes.int_)
+            self.assertEqual(t.columns[1].data_type, dtypes.int64)
 
             def misuse_c(c: int) -> int:
                 return c