From 2b6f5c3483597abcb8422508aeffab04f500f568 Mon Sep 17 00:00:00 2001
From: chgnrdv <52372310+chgnrdv@users.noreply.github.com>
Date: Sat, 15 Apr 2023 08:53:31 +0300
Subject: [PATCH] gh-102114: Make dis print more concise tracebacks for syntax
 errors in str inputs (#102115)

---
 Lib/dis.py                                                 | 6 +++---
 Lib/test/test_dis.py                                       | 7 +++++++
 .../Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst | 1 +
 3 files changed, 11 insertions(+), 3 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst

diff --git a/Lib/dis.py b/Lib/dis.py
index b39b2835330135..6a7fcb8a1a0071 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -64,10 +64,10 @@ def _try_compile(source, name):
        expect code objects
     """
     try:
-        c = compile(source, name, 'eval')
+        return compile(source, name, 'eval')
     except SyntaxError:
-        c = compile(source, name, 'exec')
-    return c
+        pass
+    return compile(source, name, 'exec')
 
 def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False):
     """Disassemble classes, methods, functions, and other compiled objects.
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index 0a60a979614d52..2d5c73c9adc920 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -1067,6 +1067,13 @@ def check(expected, **kwargs):
         check(dis_nested_2, depth=None)
         check(dis_nested_2)
 
+    def test__try_compile_no_context_exc_on_error(self):
+        # see gh-102114
+        try:
+            dis._try_compile(")", "")
+        except Exception as e:
+            self.assertIsNone(e.__context__)
+
     @staticmethod
     def code_quicken(f, times=ADAPTIVE_WARMUP_DELAY):
         for _ in range(times):
diff --git a/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst b/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst
new file mode 100644
index 00000000000000..4140c9a96cd272
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-02-21-14-57-34.gh-issue-102114.uUDQzb.rst
@@ -0,0 +1 @@
+Functions in the :mod:`dis` module that accept a source code string as argument now print a more concise traceback when the string contains a syntax or indentation error.