python类expr()的实例源码

transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 21 收藏 0 点赞 0 评论 0
def decorator(self, nodelist):
        # '@' dotted_name [ '(' [arglist] ')' ]
        assert len(nodelist) in (3, 5, 6)
        assert nodelist[0][0] == token.AT
        assert nodelist[-1][0] == token.NEWLINE

        assert nodelist[1][0] == symbol.dotted_name
        funcname = self.decorator_name(nodelist[1][1:])

        if len(nodelist) > 3:
            assert nodelist[2][0] == token.LPAR
            expr = self.com_call_function(funcname, nodelist[3])
        else:
            expr = funcname

        return expr
market_variables.py 文件源码 项目:AlphaPy 作者: ScottFreeLLC 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def __new__(cls,
                name,
                expr,
                replace = False):
        # code
        efound = expr in [Variable.variables[key].expr for key in Variable.variables]
        if efound:
            key = [key for key in Variable.variables if expr in Variable.variables[key].expr]
            logger.info("Expression '%s' already exists for key %s", expr, key)
            return
        else:
            if replace or not name in Variable.variables:
                if not valid_name(name):
                    logger.info("Invalid variable key: %s", name)
                    return
                try:
                    result = parser.expr(expr)
                except:
                    logger.info("Invalid expression: %s", expr)
                    return
                return super(Variable, cls).__new__(cls)
            else:
                logger.info("Key %s already exists", name)

    # function __init__
transformer.py 文件源码 项目:oil 作者: oilshell 项目源码 文件源码 阅读 23 收藏 0 点赞 0 评论 0
def decorator(self, nodelist):
        # '@' dotted_name [ '(' [arglist] ')' ]
        assert len(nodelist) in (3, 5, 6)
        assert nodelist[0][0] == token.AT
        assert nodelist[-1][0] == token.NEWLINE

        assert nodelist[1][0] == symbol.dotted_name
        funcname = self.decorator_name(nodelist[1][1:])

        if len(nodelist) > 3:
            assert nodelist[2][0] == token.LPAR
            expr = self.com_call_function(funcname, nodelist[3])
        else:
            expr = funcname

        return expr
transformer.py 文件源码 项目:python2-tracer 作者: extremecoders-re 项目源码 文件源码 阅读 20 收藏 0 点赞 0 评论 0
def decorator(self, nodelist):
        # '@' dotted_name [ '(' [arglist] ')' ]
        assert len(nodelist) in (3, 5, 6)
        assert nodelist[0][0] == token.AT
        assert nodelist[-1][0] == token.NEWLINE

        assert nodelist[1][0] == symbol.dotted_name
        funcname = self.decorator_name(nodelist[1][1:])

        if len(nodelist) > 3:
            assert nodelist[2][0] == token.LPAR
            expr = self.com_call_function(funcname, nodelist[3])
        else:
            expr = funcname

        return expr
transformer.py 文件源码 项目:sslstrip-hsts-openwrt 作者: adde88 项目源码 文件源码 阅读 24 收藏 0 点赞 0 评论 0
def decorator(self, nodelist):
        # '@' dotted_name [ '(' [arglist] ')' ]
        assert len(nodelist) in (3, 5, 6)
        assert nodelist[0][0] == token.AT
        assert nodelist[-1][0] == token.NEWLINE

        assert nodelist[1][0] == symbol.dotted_name
        funcname = self.decorator_name(nodelist[1][1:])

        if len(nodelist) > 3:
            assert nodelist[2][0] == token.LPAR
            expr = self.com_call_function(funcname, nodelist[3])
        else:
            expr = funcname

        return expr
transformer.py 文件源码 项目:pefile.pypy 作者: cloudtracer 项目源码 文件源码 阅读 19 收藏 0 点赞 0 评论 0
def decorator(self, nodelist):
        # '@' dotted_name [ '(' [arglist] ')' ]
        assert len(nodelist) in (3, 5, 6)
        assert nodelist[0][0] == token.AT
        assert nodelist[-1][0] == token.NEWLINE

        assert nodelist[1][0] == symbol.dotted_name
        funcname = self.decorator_name(nodelist[1][1:])

        if len(nodelist) > 3:
            assert nodelist[2][0] == token.LPAR
            expr = self.com_call_function(funcname, nodelist[3])
        else:
            expr = funcname

        return expr
pktt.py 文件源码 项目:NFStest 作者: thombashi 项目源码 文件源码 阅读 26 收藏 0 点赞 0 评论 0
def __contains__(self, expr):
        """Implement membership test operator.
           Return true if expr matches a packet in the trace file,
           false otherwise.

           The packet is also stored in the object attribute pkt.

           Examples:
               # Find the next READ request
               if ("NFS.argop == 25" in x):
                   print x.pkt.nfs

           See match() method for more information
        """
        pkt = self.match(expr)
        return (pkt is not None)
pktt.py 文件源码 项目:NFStest 作者: thombashi 项目源码 文件源码 阅读 31 收藏 0 点赞 0 评论 0
def _match(self, layer, uargs):
        """Default match function."""
        if not hasattr(self.pkt, layer):
            return False

        if layer == "nfs":
            # Use special matching function for NFS
            texpr = self.match_nfs(uargs)
        else:
            # Use general match
            obj = "self.pkt.%s." % layer.lower()
            lhs, opr, rhs = self._split_match(uargs)
            expr = self._process_match(obj, lhs, opr, rhs)
            texpr = eval(expr)
        self.dprint('PKT2', "    %d: match_%s(%s) -> %r" % (self.pkt.record.index, layer, uargs, texpr))
        return texpr
pkg_resources.py 文件源码 项目:Flask_Blog 作者: sugarguo 项目源码 文件源码 阅读 159 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
pkg_resources.py 文件源码 项目:Flask_Blog 作者: sugarguo 项目源码 文件源码 阅读 23 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
__init__.py 文件源码 项目:noc-orchestrator 作者: DirceuSilvaLabs 项目源码 文件源码 阅读 18 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented
        on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
__init__.py 文件源码 项目:noc-orchestrator 作者: DirceuSilvaLabs 项目源码 文件源码 阅读 22 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented
        on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
__init__.py 文件源码 项目:zanph 作者: zanph 项目源码 文件源码 阅读 19 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented
        on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
pkg_resources.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 19 收藏 0 点赞 0 评论 0
def parseexpr(self, text):
        """Return a modified parse tree for the given expression text."""
        return self.transform(parser.expr(text))
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def yield_stmt(self, nodelist):
        expr = self.com_node(nodelist[0])
        return Discard(expr, lineno=expr.lineno)
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def exec_stmt(self, nodelist):
        # exec_stmt: 'exec' expr ['in' expr [',' expr]]
        expr1 = self.com_node(nodelist[1])
        if len(nodelist) >= 4:
            expr2 = self.com_node(nodelist[3])
            if len(nodelist) >= 6:
                expr3 = self.com_node(nodelist[5])
            else:
                expr3 = None
        else:
            expr2 = expr3 = None

        return Exec(expr1, expr2, expr3, lineno=nodelist[0][2])
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 21 收藏 0 点赞 0 评论 0
def comparison(self, nodelist):
        # comparison: expr (comp_op expr)*
        node = self.com_node(nodelist[0])
        if len(nodelist) == 1:
            return node

        results = []
        for i in range(2, len(nodelist), 2):
            nl = nodelist[i-1]

            # comp_op: '<' | '>' | '=' | '>=' | '<=' | '<>' | '!=' | '=='
            #          | 'in' | 'not' 'in' | 'is' | 'is' 'not'
            n = nl[1]
            if n[0] == token.NAME:
                type = n[1]
                if len(nl) == 3:
                    if type == 'not':
                        type = 'not in'
                    else:
                        type = 'is not'
            else:
                type = _cmp_types[n[0]]

            lineno = nl[1][2]
            results.append((type, self.com_node(nodelist[i])))

        # we need a special "compare" node so that we can distinguish
        #   3 < x < 5   from    (3 < x) < 5
        # the two have very different semantics and results (note that the
        # latter form is always true)

        return Compare(node, results, lineno=lineno)
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 19 收藏 0 点赞 0 评论 0
def expr(self, nodelist):
        # xor_expr ('|' xor_expr)*
        return self.com_binary(Bitor, nodelist)
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 26 收藏 0 点赞 0 评论 0
def com_try_except_finally(self, nodelist):
        # ('try' ':' suite
        #  ((except_clause ':' suite)+ ['else' ':' suite] ['finally' ':' suite]
        #   | 'finally' ':' suite))

        if nodelist[3][0] == token.NAME:
            # first clause is a finally clause: only try-finally
            return TryFinally(self.com_node(nodelist[2]),
                              self.com_node(nodelist[5]),
                              lineno=nodelist[0][2])

        #tryexcept:  [TryNode, [except_clauses], elseNode)]
        clauses = []
        elseNode = None
        finallyNode = None
        for i in range(3, len(nodelist), 3):
            node = nodelist[i]
            if node[0] == symbol.except_clause:
                # except_clause: 'except' [expr [(',' | 'as') expr]] */
                if len(node) > 2:
                    expr1 = self.com_node(node[2])
                    if len(node) > 4:
                        expr2 = self.com_assign(node[4], OP_ASSIGN)
                    else:
                        expr2 = None
                else:
                    expr1 = expr2 = None
                clauses.append((expr1, expr2, self.com_node(nodelist[i+2])))

            if node[0] == token.NAME:
                if node[1] == 'else':
                    elseNode = self.com_node(nodelist[i+2])
                elif node[1] == 'finally':
                    finallyNode = self.com_node(nodelist[i+2])
        try_except = TryExcept(self.com_node(nodelist[2]), clauses, elseNode,
                               lineno=nodelist[0][2])
        if finallyNode:
            return TryFinally(try_except, finallyNode, lineno=nodelist[0][2])
        else:
            return try_except
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def com_with_item(self, nodelist, body, lineno):
        # with_item: test ['as' expr]
        if len(nodelist) == 4:
            var = self.com_assign(nodelist[3], OP_ASSIGN)
        else:
            var = None
        expr = self.com_node(nodelist[1])
        return With(expr, var, body, lineno=lineno)
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 22 收藏 0 点赞 0 评论 0
def com_list_comprehension(self, expr, node):
        return self.com_comprehension(expr, None, node, 'list')
transformer.py 文件源码 项目:hostapd-mana 作者: adde88 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def com_dictorsetmaker(self, nodelist):
        # dictorsetmaker: ( (test ':' test (comp_for | (',' test ':' test)* [','])) |
        #                   (test (comp_for | (',' test)* [','])) )
        assert nodelist[0] == symbol.dictorsetmaker
        nodelist = nodelist[1:]
        if len(nodelist) == 1 or nodelist[1][0] == token.COMMA:
            # set literal
            items = []
            for i in range(0, len(nodelist), 2):
                items.append(self.com_node(nodelist[i]))
            return Set(items, lineno=items[0].lineno)
        elif nodelist[1][0] == symbol.comp_for:
            # set comprehension
            expr = self.com_node(nodelist[0])
            return self.com_comprehension(expr, None, nodelist[1], 'set')
        elif len(nodelist) > 3 and nodelist[3][0] == symbol.comp_for:
            # dict comprehension
            assert nodelist[1][0] == token.COLON
            key = self.com_node(nodelist[0])
            value = self.com_node(nodelist[2])
            return self.com_comprehension(key, value, nodelist[3], 'dict')
        else:
            # dict literal
            items = []
            for i in range(0, len(nodelist), 4):
                items.append((self.com_node(nodelist[i]),
                              self.com_node(nodelist[i+2])))
            return Dict(items, lineno=items[0][0].lineno)
__init__.py 文件源码 项目:isni-reconcile 作者: cmh2166 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented
        on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
__init__.py 文件源码 项目:isni-reconcile 作者: cmh2166 项目源码 文件源码 阅读 36 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented
        on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
pkg_resources.py 文件源码 项目:flasky 作者: RoseOu 项目源码 文件源码 阅读 27 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
pkg_resources.py 文件源码 项目:flasky 作者: RoseOu 项目源码 文件源码 阅读 25 收藏 0 点赞 0 评论 0
def evaluate_marker(cls, text, extra=None):
        """
        Evaluate a PEP 426 environment marker on CPython 2.4+.
        Return a boolean indicating the marker result in this environment.
        Raise SyntaxError if marker is invalid.

        This implementation uses the 'parser' module, which is not implemented on
        Jython and has been superseded by the 'ast' module in Python 2.6 and
        later.
        """
        return cls.interpret(parser.expr(text).totuple(1)[1])
market_variables.py 文件源码 项目:AlphaPy 作者: ScottFreeLLC 项目源码 文件源码 阅读 30 收藏 0 点赞 0 评论 0
def __init__(self,
                 name,
                 expr,
                 replace = False):
        # code
        self.name = name;
        self.expr = expr;
        # add key with expression
        Variable.variables[name] = self

    # function __str__
market_variables.py 文件源码 项目:AlphaPy 作者: ScottFreeLLC 项目源码 文件源码 阅读 23 收藏 0 点赞 0 评论 0
def __str__(self):
        return self.expr


#
# Function vparse
#
market_variables.py 文件源码 项目:AlphaPy 作者: ScottFreeLLC 项目源码 文件源码 阅读 26 收藏 0 点赞 0 评论 0
def allvars(expr):
    r"""Get the list of valid names in the expression.

    Parameters
    ----------
    expr : str
        A valid expression conforming to the Variable Definition Language.

    Returns
    -------
    vlist : list
        List of valid variable names.

    """
    regex = re.compile('\w+')
    items = regex.findall(expr)
    vlist = []
    for item in items:
        if valid_name(item):
            vlist.append(item)
    return vlist


#
# Function vtree
#


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