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community.general/lib/ansible/module_utils/pycompat24.py
Matt Clay c24c19594e
Enable pylint rules and fix exposed bugs. (#47219)
* Resolve invalid-unary-operand-type.

* Resolve raising-format-tuple.

* Resolve stop-iteration-return.

* Use disable comment instead of fixing logic.

The affected line in _find_address_range will only fail on Python 3.7
and later if the function is called with an empty address list. As an
internal method it is never called in this way, making it a non-issue
for use via public methods.

Using a comment to disable the rule in favor of an ignore.txt entry
since there are no plans to change the logic in the code itself. This
will also prevent any potential future issues being added in other
parts of the code when updating it based on upstream changes.
2018-10-19 08:32:52 -07:00

88 lines
4 KiB
Python

# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# Copyright (c) 2016, Toshio Kuratomi <tkuratomi@ansible.com>
# Copyright (c) 2015, Marius Gedminas
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
def get_exception():
"""Get the current exception.
This code needs to work on Python 2.4 through 3.x, so we cannot use
"except Exception, e:" (SyntaxError on Python 3.x) nor
"except Exception as e:" (SyntaxError on Python 2.4-2.5).
Instead we must use ::
except Exception:
e = get_exception()
"""
return sys.exc_info()[1]
try:
# Python 2.6+
from ast import literal_eval
except ImportError:
# a replacement for literal_eval that works with python 2.4. from:
# https://mail.python.org/pipermail/python-list/2009-September/551880.html
# which is essentially a cut/paste from an earlier (2.6) version of python's
# ast.py
from compiler import ast, parse
from ansible.module_utils.six import binary_type, integer_types, string_types, text_type
def literal_eval(node_or_string):
"""
Safely evaluate an expression node or a string containing a Python
expression. The string or node provided may only consist of the following
Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
and None.
"""
_safe_names = {'None': None, 'True': True, 'False': False}
if isinstance(node_or_string, string_types):
node_or_string = parse(node_or_string, mode='eval')
if isinstance(node_or_string, ast.Expression):
node_or_string = node_or_string.node
def _convert(node):
if isinstance(node, ast.Const) and isinstance(node.value, (text_type, binary_type, float, complex) + integer_types):
return node.value
elif isinstance(node, ast.Tuple):
return tuple(map(_convert, node.nodes))
elif isinstance(node, ast.List):
return list(map(_convert, node.nodes))
elif isinstance(node, ast.Dict):
return dict((_convert(k), _convert(v)) for k, v in node.items())
elif isinstance(node, ast.Name):
if node.name in _safe_names:
return _safe_names[node.name]
elif isinstance(node, ast.UnarySub):
return -_convert(node.expr) # pylint: disable=invalid-unary-operand-type
raise ValueError('malformed string')
return _convert(node_or_string)
__all__ = ('get_exception', 'literal_eval')