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ENH: support for `PySide6` in `%gui` (#13864)...
ENH: support for `PySide6` in `%gui` (#13864) Addresses #13859 Changes here parallel the changes in [ipykernel](https://github.com/ipython/ipykernel/pull/1054), i.e. prefer `PyQt` over `PySide` and allow requesting explicit versions (e.g. 'qt5') with one difference (see below). I believe that, eventually, the Qt importing logic should be all here, and `ipykernel` should defer to`ipython`. I chose not to do that at this time since it would mean the latest `ipykernel` would require the latest `IPython`; I'm happy to discuss further. The only difference between `IPython` and `ipykernel`, after these two pull requests, is that, in `IPython`, it's not possible to explicitly request an event loop for Qt4. This is because an alias exists [here](https://github.com/ipython/ipython/blob/5409de68d87ddd073a35111aca0cb8360ff63ca8/IPython/terminal/pt_inputhooks/__init__.py#L5) which effectively makes "qt4" be "the latest Qt available". I did not remove the alias because I don't know the history behind it.

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test_handlers.py
97 lines | 3.2 KiB | text/x-python | PythonLexer
"""Tests for input handlers.
"""
#-----------------------------------------------------------------------------
# Module imports
#-----------------------------------------------------------------------------
# our own packages
from IPython.core import autocall
from IPython.testing import tools as tt
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
# Get the public instance of IPython
failures = []
num_tests = 0
#-----------------------------------------------------------------------------
# Test functions
#-----------------------------------------------------------------------------
class CallableIndexable(object):
def __getitem__(self, idx): return True
def __call__(self, *args, **kws): return True
class Autocallable(autocall.IPyAutocall):
def __call__(self):
return "called"
def run(tests):
"""Loop through a list of (pre, post) inputs, where pre is the string
handed to ipython, and post is how that string looks after it's been
transformed (i.e. ipython's notion of _i)"""
tt.check_pairs(ip.prefilter_manager.prefilter_lines, tests)
def test_handlers():
call_idx = CallableIndexable()
ip.user_ns['call_idx'] = call_idx
# For many of the below, we're also checking that leading whitespace
# turns off the esc char, which it should unless there is a continuation
# line.
run(
[('"no change"', '"no change"'), # normal
(u"lsmagic", "get_ipython().run_line_magic('lsmagic', '')"), # magic
#("a = b # PYTHON-MODE", '_i'), # emacs -- avoids _in cache
])
# Objects which are instances of IPyAutocall are *always* autocalled
autocallable = Autocallable()
ip.user_ns['autocallable'] = autocallable
# auto
ip.run_line_magic("autocall", "0")
# Only explicit escapes or instances of IPyAutocallable should get
# expanded
run(
[
('len "abc"', 'len "abc"'),
("autocallable", "autocallable()"),
# Don't add extra brackets (gh-1117)
("autocallable()", "autocallable()"),
]
)
ip.run_line_magic("autocall", "1")
run(
[
('len "abc"', 'len("abc")'),
('len "abc";', 'len("abc");'), # ; is special -- moves out of parens
# Autocall is turned off if first arg is [] and the object
# is both callable and indexable. Like so:
("len [1,2]", "len([1,2])"), # len doesn't support __getitem__...
("call_idx [1]", "call_idx [1]"), # call_idx *does*..
("call_idx 1", "call_idx(1)"),
("len", "len"), # only at 2 does it auto-call on single args
]
)
ip.run_line_magic("autocall", "2")
run(
[
('len "abc"', 'len("abc")'),
('len "abc";', 'len("abc");'),
("len [1,2]", "len([1,2])"),
("call_idx [1]", "call_idx [1]"),
("call_idx 1", "call_idx(1)"),
# This is what's different:
("len", "len()"), # only at 2 does it auto-call on single args
]
)
ip.run_line_magic("autocall", "1")
assert failures == []