gh-84083: support equality comparisons in dis.Bytecode

Doc/whatsnew/3.9.rst

@@ -420,6 +420,12 @@ The :command:`upload` command now creates SHA2-256 and Blake2b-256 hash
 digests. It skips MD5 on platforms that block MD5 digest.
 (Contributed by Christian Heimes in :issue:`40698`.)
 
+dis
+---
+
+:class:`dis.Bytecode` objects now support equality comparisons. (Contributed
+by Batuhan Taskaya in :issue:`39902`.)
+
 fcntl
 -----
 

Lib/dis.py

@@ -1151,6 +1151,16 @@ def dis(self):
                                formatter=formatter)
             return output.getvalue()
 
+    def __eq__(self, other):
+        if isinstance(other, Bytecode):
+            return (self.codeobj, self.first_line, self.current_offset) == (
+                other.codeobj,
+                other.first_line,
+                other.current_offset,
+            )
+        else:
+            return NotImplemented
+
 
 def main(args=None):
     import argparse

Lib/test/test_dis.py

@@ -2406,6 +2406,17 @@ def test_from_traceback_dis(self):
         b = dis.Bytecode.from_traceback(tb)
         self.assertEqual(b.dis(), dis_traceback)
 
+    def test_equality(self):
+        self.assertEqual(dis.Bytecode("print(1)"), dis.Bytecode("print(1)"))
+        self.assertNotEqual(dis.Bytecode("print(1)"), dis.Bytecode("print(2)"))
+        self.assertNotEqual(
+            dis.Bytecode("print(1)", first_line=3), dis.Bytecode("print(1)")
+        )
+        self.assertNotEqual(
+            dis.Bytecode("print(1)", current_offset=5),
+            dis.Bytecode("print(1)"),
+        )
+
     @requires_debug_ranges()
     def test_bytecode_co_positions(self):
         bytecode = dis.Bytecode("a=1")

Misc/NEWS.d/next/Library/2020-03-08-15-16-45.bpo-39902.HoE484.rst

@@ -0,0 +1,2 @@
+Added support for equality comparisons in ``dis.Bytecode`` objects. Patch by
+Batuhan Taskaya.