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make debugger class configurable #1307

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make debugger class configurable #1307

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617100c
make debugger class configurable
smacke Dec 13, 2024
b18b069
address comments
smacke Dec 14, 2024
090522d
make compiler class configurable too
smacke Dec 15, 2024
6bd5782
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Dec 15, 2024
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12 changes: 9 additions & 3 deletions ipykernel/ipkernel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,12 @@ class IPythonKernel(KernelBase):
shell = Instance("IPython.core.interactiveshell.InteractiveShellABC", allow_none=True)
shell_class = Type(ZMQInteractiveShell)

# use fully-qualified name to ensure lazy import and prevent the issue from
# https://github.com/ipython/ipykernel/issues/1198
debugger_class = Type("ipykernel.debugger.Debugger")

compiler_class = Type(XCachingCompiler)

use_experimental_completions = Bool(
True,
help="Set this flag to False to deactivate the use of experimental IPython completion APIs.",
Expand Down Expand Up @@ -110,11 +116,11 @@ def __init__(self, **kwargs):

self.executing_blocking_code_in_main_shell = False

from .debugger import Debugger, _is_debugpy_available
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It looks like #1223 intentionally introduced this lazy import. Let's make sure we're addressing the need there as well before making this an eager import at the top of the file.

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In particular, does this change mean that python -m ipykernel install --sys-prefix has spurious warnings?

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@jasongrout jasongrout Dec 13, 2024 •
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CC @krassowski who made this lazy import change earlier this year.

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Thanks for spotting, yes this is intentional to address #1198

from .debugger import _is_debugpy_available

# Initialize the Debugger
if _is_debugpy_available:
self.debugger = Debugger(
self.debugger = self.debugger_class(
self.log,
self.debugpy_socket,
self._publish_debug_event,
Expand All @@ -130,7 +136,7 @@ def __init__(self, **kwargs):
user_module=self.user_module,
user_ns=self.user_ns,
kernel=self,
compiler_class=XCachingCompiler,
compiler_class=self.compiler_class,
)
self.shell.displayhook.session = self.session # type:ignore[attr-defined]

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