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# Copyright (C) 2017 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""This module enables interactive mode in Python Fire."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import code
import inspect
import IPython
def Embed(variables, verbose=False):
"""Drops into a Python REPL with variables available as local variables.
Args:
variables: A dict of variables to make available. Keys are variable names.
Values are variable values.
verbose: Whether to include 'hidden' members, those keys starting with _.
"""
print(_AvailableString(variables, verbose))
_EmbedIPython(variables)
def _AvailableString(variables, verbose=False):
"""Returns a string describing what objects are available in the Python REPL.
Args:
variables: A dict of the object to be available in the REPL.
verbose: Whether to include 'hidden' members, those keys starting with _.
Returns:
A string fit for printing at the start of the REPL, indicating what objects
are available for the user to use.
"""
modules = []
other = []
for name, value in variables.items():
if not verbose and name.startswith('_'):
continue
if '-' in name or '/' in name:
continue
if inspect.ismodule(value):
modules.append(name)
else:
other.append(name)
lists = [
('Modules', modules),
('Objects', other)]
liststrs = []
for name, varlist in lists:
if varlist:
liststrs.append(
'{name}: {items}'.format(name=name, items=', '.join(sorted(varlist))))
return (
'Fire is starting a Python REPL with the following objects:\n'
'{liststrs}\n'
).format(liststrs='\n'.join(liststrs))
def _EmbedIPython(variables, argv=None):
"""Drops into an IPython REPL with variables available for use.
Args:
variables: A dict of variables to make available. Keys are variable names.
Values are variable values.
argv: The argv to use for starting ipython. Defaults to an empty list.
"""
argv = argv or []
IPython.start_ipython(argv=argv, user_ns=variables)
def _EmbedCode(variables):
code.InteractiveConsole(variables).interact()