In my shell ( zsh
) or in python
, I can go backward through command history by pressing PageDown , and I can go forward by pressing PageUp .
But in ipython
, these shortcuts are reversed.
Where are these shortcuts defined for ipython
, and how can I reverse them back, so that
PageDown goes back in history, and PageUp goes forward in history?
I am using ipython3
version 5.8.0
on Debian 10.
In IPython version 5.x, this is mentioned in the documentation: Specific config details — IPython 5.11.0.dev documentation
To get the function to bind to, see key_binding/bindings/basic.py
: The default is
handle("pageup", filter=~has_selection)(get_by_name("previous-history"))
handle("pagedown", filter=~has_selection)(get_by_name("next-history"))
So, put this code in a startup file :
from IPython import get_ipython
from prompt_toolkit.filters import HasSelection
from prompt_toolkit.keys import Keys
from prompt_toolkit.key_binding.bindings.named_commands import get_by_name
registry = get_ipython().pt_cli.application.key_bindings_registry
registry.add_binding(Keys.PageUp, filter=~HasSelection())(get_by_name("next-history"))
registry.add_binding(Keys.PageDown, filter=~HasSelection())(get_by_name("previous-history"))
On newer IPython versions (such as 7.19.0) replace the registry =...
line with
registry = get_ipython().pt_app.key_bindings
Reference: Specific config details — IPython 7.19.0 documentation
Create script in ~/.ipython/profile_default/startup
directory with any name ending with extension .py
or .ipy
For example i created history_keybindings.py
and put it inside ~/.ipython/profile_default/startup
directory
from IPython import get_ipython
from IPython.terminal.shortcuts import previous_history_or_previous_completion, next_history_or_next_completion
from prompt_toolkit.keys import Keys
from prompt_toolkit.filters import HasSelection
ip = get_ipython()
registry = None
if (getattr(ip, 'pt_app', None)):
# for IPython versions 7.x
registry = ip.pt_app.key_bindings
elif (getattr(ip, 'pt_cli', None)):
# for IPython versions 5.x
registry = ip.pt_cli.application.key_bindings_registry
if registry:
registry.add_binding(Keys.PageUp, filter=(~HasSelection()))(previous_history_or_previous_completion)
registry.add_binding(Keys.PageDown, filter=(~HasSelection()))(next_history_or_next_completion)
Note: For more info check here
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