我们从Python开源项目中，提取了以下30个代码示例，用于说明如何使用symbol.testlist()。
def classdef(self, nodelist): # classdef: 'class' NAME ['(' [testlist] ')'] ':' suite name = nodelist[1][1] doc = self.get_docstring(nodelist[-1]) if nodelist[2][0] == token.COLON: bases = [] elif nodelist[3][0] == token.RPAR: bases = [] else: bases = self.com_bases(nodelist[3]) # code for class code = self.com_node(nodelist[-1]) if doc is not None: assert isinstance(code, Stmt) assert isinstance(code.nodes[0], Discard) del code.nodes[0] return Class(name, bases, doc, code, lineno=nodelist[1][2])
def expr_stmt(self, nodelist): # augassign testlist | testlist ('=' testlist)* en = nodelist[-1] exprNode = self.lookup_node(en)(en[1:]) if len(nodelist) == 1: return Discard(exprNode, lineno=exprNode.lineno) if nodelist[1][0] == token.EQUAL: nodesl = [] for i in range(0, len(nodelist) - 2, 2): nodesl.append(self.com_assign(nodelist[i], OP_ASSIGN)) return Assign(nodesl, exprNode, lineno=nodelist[1][2]) else: lval = self.com_augassign(nodelist[0]) op = self.com_augassign_op(nodelist[1]) return AugAssign(lval, op[1], exprNode, lineno=op[2]) raise WalkerError, "can't get here"
def return_stmt(self, nodelist): # return: [testlist] if len(nodelist) < 2: return Return(Const(None), lineno=nodelist[0][2]) return Return(self.com_node(nodelist[1]), lineno=nodelist[0][2])
def testlist(self, nodelist): # testlist: expr (',' expr)* [','] # testlist_safe: test [(',' test)+ [',']] # exprlist: expr (',' expr)* [','] return self.com_binary(Tuple, nodelist)
def testlist_comp(self, nodelist): # test ( comp_for | (',' test)* [','] ) assert nodelist[0][0] == symbol.test if len(nodelist) == 2 and nodelist[1][0] == symbol.comp_for: test = self.com_node(nodelist[0]) return self.com_generator_expression(test, nodelist[1]) return self.testlist(nodelist)
def com_comprehension(self, expr1, expr2, node, type): # list_iter: list_for | list_if # list_for: 'for' exprlist 'in' testlist [list_iter] # list_if: 'if' test [list_iter] # XXX should raise SyntaxError for assignment # XXX(avassalotti) Set and dict comprehensions should have generator # semantics. In other words, they shouldn't leak # variables outside of the comprehension's scope. lineno = node[1][2] fors = [] while node: t = node[1][1] if t == 'for': assignNode = self.com_assign(node[2], OP_ASSIGN) compNode = self.com_node(node[4]) newfor = ListCompFor(assignNode, compNode, []) newfor.lineno = node[1][2] fors.append(newfor) if len(node) == 5: node = None elif type == 'list': node = self.com_list_iter(node[5]) else: node = self.com_comp_iter(node[5]) elif t == 'if': test = self.com_node(node[2]) newif = ListCompIf(test, lineno=node[1][2]) newfor.ifs.append(newif) if len(node) == 3: node = None elif type == 'list': node = self.com_list_iter(node[3]) else: node = self.com_comp_iter(node[3]) else: raise SyntaxError, \ ("unexpected comprehension element: %s %d" % (node, lineno)) if type == 'list': return ListComp(expr1, fors, lineno=lineno) elif type == 'set': return SetComp(expr1, fors, lineno=lineno) elif type == 'dict': return DictComp(expr1, expr2, fors, lineno=lineno) else: raise ValueError("unexpected comprehension type: " + repr(type))
