本文整理汇总了Python中symbol.list_iter方法的典型用法代码示例。如果您正苦于以下问题：Python symbol.list_iter方法的具体用法？Python symbol.list_iter怎么用？Python symbol.list_iter使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类symbol的用法示例。
在下文中一共展示了symbol.list_iter方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: com_list_iter
# 需要导入模块: import symbol [as 别名]
# 或者: from symbol import list_iter [as 别名]
def com_list_iter(self, node):
assert node[0] == symbol.list_iter
return node[1] 示例2: com_list_comprehension
# 需要导入模块: import symbol [as 别名]
# 或者: from symbol import list_iter [as 别名]
def com_list_comprehension(self, expr, node):
# 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
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
listNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, listNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
else:
node = self.com_list_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
else:
node = self.com_list_iter(node[3])
else:
raise SyntaxError, \
("unexpected list comprehension element: %s %d"
% (node, lineno))
return ListComp(expr, fors, lineno=lineno) 示例3: com_list_iter
# 需要导入模块: import symbol [as 别名]
# 或者: from symbol import list_iter [as 别名]
def com_list_iter(self, node):
assert node[0] == symbol.list_iter
return node[1] 示例4: com_comprehension
# 需要导入模块: import symbol [as 别名]
# 或者: from symbol import list_iter [as 别名]
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))