New submission from Steve Pryde <spryd...@gmail.com>:
When python prints or returns a stacktrace, it displays the appropriate line
from the *current file on disk*, which may have changed since the program was
run. It should instead show the lines from the file as it was when the code was
executed.
Steps to reproduce:
1. Save the following code to a file and run it in a terminal.
import time
time.sleep(600)
2. While it is running, insert a line before "time.sleep(600)", type some
random characters, and save the file. The "time.sleep" should now be on line 4,
and some random characters on line 3.
3. Now go back to the terminal and press Ctrl+C (to generate a stacktrace).
Expected output:
^CTraceback (most recent call last):
File "py1.py", line 3, in <module>
time.sleep(600)
KeyboardInterrupt
Actual output:
^CTraceback (most recent call last):
File "py1.py", line 3, in <module>
some random characters
KeyboardInterrupt
----------
components: Interpreter Core
messages: 334544
nosy: Steve Pryde
priority: normal
severity: normal
status: open
title: Stacktrace shows lines from updated file on disk, not code actually
running
type: behavior
versions: Python 3.7
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35857>
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