New submission from Alex Hall <alex.moj...@gmail.com>:
When stepping through a multiline expression like this:
```
print(slug
.replace("_", " ")
.title()
.upper()
.replace("a", "b")
.lower()
.replace("The ", "the "))
```
only these lines are hit by the tracer function:
15 print(slug
16 .replace("_", " ")
19 .replace("a", "b")
21 .replace("The ", "the "))
I'm guessing the problem is that there are no expressions on the other lines,
as the attributes and calls all start with slug.
----------
components: Interpreter Core
files: trace_skipping_lines_bug.py
messages: 359878
nosy: alexmojaki
priority: normal
severity: normal
status: open
title: settrace skips lines when chaining methods without arguments
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48837/trace_skipping_lines_bug.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39316>
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