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validate ESC_PAREN ('/') is followed by a callable name and not empty (#12690)...
validate ESC_PAREN ('/') is followed by a callable name and not empty (#12690) When running a single python expression with just a slash - `/`, a tuple is returned. ```python In [1]: / Out[1]: () ``` This weird case happens because when a line starts with `/` the `inputtransformer` transforms it into a call of the first word after the `/` as the callable name and rest tokens after as arguments. This PR fixes that issue by validating that at least a callable name is given and it's not empty, if not a `SyntaxError` will be raised. ```python In [1]: / File "<ipython-input-1-8f27084b6294>", line 1 / ^ SyntaxError: invalid syntax In [2]: ``` Validated that tests are passing.
Matthias Bussonnier - - Load All Authors

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payload.py
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/ IPython / core / payload.py
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# -*- coding: utf-8 -*-
"""Payload system for IPython.
Authors:
* Fernando Perez
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from traitlets.config.configurable import Configurable
from traitlets import List
#-----------------------------------------------------------------------------
# Main payload class
#-----------------------------------------------------------------------------
class PayloadManager(Configurable):
_payload: List = List([])
def write_payload(self, data, single=True):
"""Include or update the specified `data` payload in the PayloadManager.
If a previous payload with the same source exists and `single` is True,
it will be overwritten with the new one.
"""
if not isinstance(data, dict):
raise TypeError('Each payload write must be a dict, got: %r' % data)
if single and 'source' in data:
source = data['source']
for i, pl in enumerate(self._payload):
if 'source' in pl and pl['source'] == source:
self._payload[i] = data
return
self._payload.append(data)
def read_payload(self):
return self._payload
def clear_payload(self):
self._payload = []