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Cannot escape IPython.embed() when called repeatedly within function inside a for-loop #9149

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mpacer opened this issue Jan 20, 2016 · 4 comments
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Cannot escape IPython.embed() when called repeatedly within function inside a for-loop #9149

mpacer opened this issue Jan 20, 2016 · 4 comments
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4.1

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@mpacer
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mpacer commented Jan 20, 2016

I am running foo.py from the command line, and it includes a function has a for loop, inside of which is a function that has an IPython.embed() statement. This is to initialize an interpreter at that point within the function to have access to those local variables.

However, when trying to escape from the embedded interpreter, it only opens a new interpreter (presumably up to k times for the for loop), effectively locking that terminal.

It would be nice to have a command analogous to ipdb's q, which immediately throws an exception and exits to the CLI in which foo.py was executed.
Carreau added a commit to Carreau/ipython that referenced this issue Jan 20, 2016
@Carreau
Allow Embeded instances to raise on exit.
77c2c9d 
This is use full in case where an IPython embed instance is created in a loop:

    from IPython import embed
    while True:
        embed(header="You will be stuck there")

Now using `%raise_on_exist True` in an embeded shell allows the embeded
instannce to raise on exit.

Potential improvement would be flags to pass a custom exception type as
well as a custom message to raise.

Closes ipython#9149
@Carreau Carreau mentioned this issue Jan 20, 2016
Merged
Carreau added a commit to Carreau/ipython that referenced this issue Jan 20, 2016
@Carreau
Allow Embeded instances to raise on exit.
b78738c 
This is use full in case where an IPython embed instance is created in a loop:

    from IPython import embed
    while True:
        embed(header="You will be stuck there")

Now using `%raise_on_exist True` in an embeded shell allows the embeded
instannce to raise on exit.

Potential improvement would be flags to pass a custom exception type as
well as a custom message to raise.

Closes ipython#9149
@Carreau Carreau added this to the 5.0 milestone Jan 20, 2016
@takluyver
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Try %kill_embedded - it doesn't break out of your loop, but it should make all future calls to embed() no-ops, so that the rest of your script executes to completion.

@takluyver takluyver modified the milestones: 4.1, 5.0 Jan 26, 2016
@s2t2
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s2t2 commented May 25, 2018

It would be nice to have a single command that would completely stop the script's execution. Like the equivalent of:

  1. %kill_embedded (and yes, sure about it)
  2. exit
  3. "ctrl + c" (three times)

@kolypto
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kolypto commented Oct 15, 2019

%exit_raise will raise an exception into the outer context and your code will exit

@pranavtushar
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@s2t2 exit is working with the current version.

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@takluyver @Carreau @s2t2 @kolypto @mpacer @pranavtushar