# -*- coding: utf-8 -*-
# module pyparsing.py
#
# Copyright (c) 2003-2019 Paul T. McGuire
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__doc__ = \
"""
pyparsing module - Classes and methods to define and execute parsing grammars
=============================================================================
The pyparsing module is an alternative approach to creating and
executing simple grammars, vs. the traditional lex/yacc approach, or the
use of regular expressions. With pyparsing, you don't need to learn
a new syntax for defining grammars or matching expressions - the parsing
module provides a library of classes that you use to construct the
grammar directly in Python.
Here is a program to parse "Hello, World!" (or any greeting of the form
``"<salutation>, <addressee>!"``), built up using :class:`Word`,
:class:`Literal`, and :class:`And` elements
(the :class:`'+'<ParserElement.__add__>` operators create :class:`And` expressions,
and the strings are auto-converted to :class:`Literal` expressions)::
from pip._vendor.pyparsing import Word, alphas
# define grammar of a greeting
greet = Word(alphas) + "," + Word(alphas) + "!"
hello = "Hello, World!"
print (hello, "->", greet.parseString(hello))
The program outputs the following::
Hello, World! -> ['Hello', ',', 'World', '!']
The Python representation of the grammar is quite readable, owing to the
self-explanatory class names, and the use of '+', '|' and '^' operators.
The :class:`ParseResults` object returned from
:class:`ParserElement.parseString` can be
accessed as a nested list, a dictionary, or an object with named
attributes.
The pyparsing module handles some of the problems that are typically
vexing when writing text parsers:
- extra or missing whitespace (the above program will also handle
"Hello,World!", "Hello , World !", etc.)
- quoted strings
- embedded comments
Getting Started -
-----------------
Visit the classes :class:`ParserElement` and :class:`ParseResults` to
see the base classes that most other pyparsing
classes inherit from. Use the docstrings for examples of how to:
- construct literal match expressions from :class:`Literal` and
:class:`CaselessLiteral` classes
- construct character word-group expressions using the :class:`Word`
class
- see how to create repetitive expressions using :class:`ZeroOrMore`
and :class:`OneOrMore` classes
- use :class:`'+'<And>`, :class:`'|'<MatchFirst>`, :class:`'^'<Or>`,
and :class:`'&'<Each>` operators to combine simple expressions into
more complex ones
- associate names with your parsed results using
:class:`ParserElement.setResultsName`
- access the parsed data, which is returned as a :class:`ParseResults`
object
- find some helpful expression short-cuts like :class:`delimitedList`
and :class:`oneOf`
- find more useful common expressions in the :class:`pyparsing_common`
namespace class
"""
__version__ = "2.4.7"
__versionTime__ = "30 Mar 2020 00:43 UTC"
__author__ = "Paul McGuire <[email protected]>"
import string
from weakref import ref as wkref
import copy
import sys
import warnings
import re
import sre_constants
import collections
import pprint
import traceback
import types
from datetime import datetime
from operator import itemgetter
import itertools
from functools import wraps
from contextlib import contextmanager
try:
# Python 3
from itertools import filterfalse
except ImportError:
from itertools import ifilterfalse as filterfalse
try:
from _thread import RLock
except ImportError:
from threading import RLock
try:
# Python 3
from collections.abc import Iterable
from collections.abc import MutableMapping, Mapping
except ImportError:
# Python 2.7
from collections import Iterable
from collections import MutableMapping, Mapping
try:
from collections import OrderedDict as _OrderedDict
except ImportError:
try:
from ordereddict import OrderedDict as _OrderedDict
except ImportError:
_OrderedDict = None
try:
from types import SimpleNamespace
except ImportError:
class SimpleNamespace: pass
# version compatibility configuration
__compat__ = SimpleNamespace()
__compat__.__doc__ = """
A cross-version compatibility configuration for pyparsing features that will be
released in a future version. By setting values in this configuration to True,
those features can be enabled in prior versions for compatibility development
and testing.
- collect_all_And_tokens - flag to enable fix for Issue #63 that fixes erroneous grouping
of results names when an And expression is nested within an Or or MatchFirst; set to
True to enable bugfix released in pyparsing 2.3.0, or False to preserve
pre-2.3.0 handling of named results
"""
__compat__.collect_all_And_tokens = True
__diag__ = SimpleNamespace()
__diag__.__doc__ = """
Diagnostic configuration (all default to False)
- warn_multiple_tokens_in_named_alternation - flag to enable warnings when a results
name is defined on a MatchFirst or Or expression with one or more And subexpressions
(only warns if __compat__.collect_all_And_tokens is False)
- warn_ungrouped_named_tokens_in_collection - flag to enable warnings when a results
name is defined on a containing expression with ungrouped subexpressions that also
have results names
- warn_name_set_on_empty_Forward - flag to enable warnings whan a Forward is defined
with a results name, but has no contents defined
- warn_on_multiple_string_args_to_oneof - flag to enable warnings whan oneOf is
incorrectly called with multiple str arguments
- enable_debug_on_named_expressions - flag to auto-enable debug on all subsequent
calls to ParserElement.setName()
"""
__diag__.warn_multiple_tokens_in_named_alternation = False
__diag__.warn_ungrouped_named_tokens_in_collection = False
__diag__.warn_name_set_on_empty_Forward = False
__diag__.warn_on_multiple_string_args_to_oneof = False
__diag__.enable_debug_on_named_expressions = False
__diag__._all_names = [nm for nm in vars(__diag__) if nm.startswith("enable_") or nm.startswith("warn_")]
def _enable_all_warnings():
__diag__.warn_multiple_tokens_in_named_alternation = True
__diag__.warn_ungrouped_named_tokens_in_collection = True
__diag__.warn_name_set_on_empty_Forward = True
__diag__.warn_on_multiple_string_args_to_oneof = True
__diag__.enable_all_warnings = _enable_all_warnings
__all__ = ['__version__', '__versionTime__', '__author__', '__compat__', '__diag__',
'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
'PrecededBy', 'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
'ParseBaseException', 'ParseElementEnhance', 'Pars
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- -个基于Python写的0PCUA客户端例子 环境:WIndows 10 + Pycharm + python3.8.x + pyQT5 只连接了OPC UA服务器,获取变量数据,写标签数据。比较简单
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- -个基于Python写的0PCUA客户端例子
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activate.bat 995B
deactivate.bat 368B
sysconfig.cfg 3KB
pyvenv.cfg 116B
python.exe 524KB
pythonw.exe 523KB
easy_install-3.8.exe 104KB
easy_install.exe 104KB
pip.exe 104KB
pip3.exe 104KB
pip3.8.exe 104KB
t64.exe 104KB
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t32.exe 95KB
w32.exe 88KB
gui-64.exe 74KB
cli-64.exe 73KB
gui.exe 64KB
gui-32.exe 64KB
cli-32.exe 64KB
cli.exe 64KB
.gitignore 50B
OpcUa.iml 394B
INSTALLER 4B
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LICENSE 1KB
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cacert.pem 275KB
Activate.ps1 19KB
distutils-precedence.pth 152B
pyparsing.py 267KB
pyparsing.py 227KB
pyparsing.py 227KB
uts46data.py 197KB
html5parser.py 114KB
__init__.py 106KB
__init__.py 105KB
tarfile.py 90KB
easy_install.py 84KB
constants.py 82KB
ipaddress.py 78KB
_tokenizer.py 75KB
util.py 58KB
locators.py 51KB
msvc.py 50KB
database.py 50KB
dist.py 49KB
ccompiler.py 46KB
distro.py 43KB
idnadata.py 41KB
compat.py 40KB
wheel.py 40KB
package_index.py 40KB
metadata.py 38KB
decoder.py 38KB
dist.py 38KB
package_finder.py 37KB
connectionpool.py 36KB
fallback.py 36KB
bdist_msi.py 35KB
models.py 34KB
securetransport.py 33KB
six.py 33KB
req_install.py 33KB
six.py 32KB
_inputstream.py 32KB
specifiers.py 31KB
specifiers.py 31KB
specifiers.py 31KB
build_ext.py 31KB
euctwfreq.py 31KB
big5freq.py 31KB
wheel.py 31KB
msvc9compiler.py 30KB
utils.py 30KB
sessions.py 29KB
tags.py 28KB
cmdoptions.py 28KB
response.py 28KB
misc.py 27KB
install.py 27KB
install.py 27KB
sanitizer.py 26KB
sysconfig.py 26KB
versioncontrol.py 25KB
appdirs.py 25KB
jisfreq.py 25KB
shutil.py 25KB
egg_info.py 25KB
mbcssm.py 25KB
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tags.py 24KB
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req_uninstall.py 23KB
msvccompiler.py 23KB
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