New repl shows output only for last statement from several, separated by ";"

[skirpichev]

Bug report

Bug description:

An example:

$ python3.13
Python 3.13.1 (tags/v3.13.1:0671451779, Dec  4 2024, 07:55:26) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 1;2
2
$ PYTHON_BASIC_REPL=1 python3.13
Python 3.13.1 (tags/v3.13.1:0671451779, Dec  4 2024, 07:55:26) [GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 1;2
1
2

That's valid for the current main.

A lot of docstrings in the mpmath rely on this feature of old repl. So, this looks as a bug for me.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-131217: new repl display output from all statements, separated by ';' #131341

[skirpichev]

Following "works for me":

diff --git a/Lib/_pyrepl/console.py b/Lib/_pyrepl/console.py
index 7916638921..256edc07a0 100644
--- a/Lib/_pyrepl/console.py
+++ b/Lib/_pyrepl/console.py
@@ -201,8 +201,8 @@ def runsource(self, source, filename="<input>", symbol="single"):
         if tree.body:
             *_, last_stmt = tree.body
         for stmt in tree.body:
-            wrapper = ast.Interactive if stmt is last_stmt else ast.Module
-            the_symbol = symbol if stmt is last_stmt else "exec"
+            wrapper = ast.Interactive  # if stmt is last_stmt else ast.Module
+            the_symbol = symbol  # if stmt is last_stmt else "exec"
             item = wrapper([stmt])
             try:
                 code = self.compile.compiler(item, filename, the_symbol)

$ ./python -m test test_repl -u curses
Using random seed: 3945173947
0:00:00 load avg: 0.97 Run 1 test sequentially in a single process
0:00:00 load avg: 0.97 [1/1] test_repl
0:00:03 load avg: 0.97 [1/1] test_repl passed

== Tests result: SUCCESS ==

1 test OK.

Total duration: 3.2 sec
Total tests: run=13
Total test files: run=1/1
Result: SUCCESS

[terryjreedy]

In IDLE on main, which also uses code.InteractiveInterpreter but with a simpler runsource override:

>>> 1; 2
1
2

[skirpichev]

Yes, that works fine in the mpmath repl, which uses code.InteractiveConsole.

[skirpichev]

pr is ready: #131341

[skirpichev]

CC @pablogsal