Python ‘exec’ is great for short evaluation of code. However, i want to make this into ‘step by step’, REPL like function. generally, if with the described ability, the following code should run fine: def function(): value = exec('return 1') print(function()) # 1 If anyone wants to know how …

No, it shouldn’t run fine. return outside of a function is illegal so it should be illegal when passed to exec as well. Otherwise exec runs a superset of Python: code that “works” in exec doesn’t work outside of exec. And that would be bad. I’m both horrified and impressed by your hack to get it w…

The hack above is the potential use case, not the solution to the problem. The use case can be explained as skipping statements which cause trouble and continue executing the following statements. Example: def troubleFunction(): a = 0 print(b) # skipped return b # also skipped re…

[image] James4 Ever0: The use case can be explained as skipping statements which cause trouble and continue executing the following statements. That’s PHP’s mentality. Not Python’s.

For better debugging it is necessary to borrow some language features.

BASIC has it too. It is called ON ERROR RESUME NEXT. Implementing ON ERROR RESUME NEXT in Python

google for ‘resumable exceptions’ reversible debugging

[image] James4 Ever0: reversible debugging Not sure that that’s relevant; I can’t find anything about reversible debugging that says that buggy lines of code should be skipped so that execution can arbitrarily continue. If you really think that this will help you to debug your code, go ahead…

Allowing to skip the buggy code is just an option. There are many ways to fix a bug, and many more if a reversible debugger is avaliable. Skipping the buggy code in accurate words is to resume execution even if a bug is encountered. This allows hot-patching of current code. Aside from that, many mo…

[image] James4 Ever0: Skipping the buggy code in accurate words is to resume execution even if a bug is encountered. This allows hot-patching of current code. Aside from that, many more features can be added to debugger to help better understanding of the code, saving time from rerunning the ent…

The default behavior is to stop on the bug, and if after review you think it is viable to continue to next line without changing/inserting new code at the spot, it is called skipping. Debugging without rerunning is not always an option for everyone, even with reversible debugger. However, it is a t…

Exec() with 'return' keyword

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Rosuav (Chris Angelico) November 6, 2022, 3:16am 4

That’s PHP’s mentality. Not Python’s.