本文整理汇总了Python中lib2to3.fixer_util.syms.argument方法的典型用法代码示例。如果您正苦于以下问题：Python syms.argument方法的具体用法？Python syms.argument怎么用？Python syms.argument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lib2to3.fixer_util.syms的用法示例。
在下文中一共展示了syms.argument方法的1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: has_metaclass
# 需要导入模块: from lib2to3.fixer_util import syms [as 别名]
# 或者: from lib2to3.fixer_util.syms import argument [as 别名]
def has_metaclass(parent):
results = None
for node in parent.children:
kids = node.children
if node.type == syms.argument:
if kids[0] == Leaf(token.NAME, u"metaclass") and \
kids[1] == Leaf(token.EQUAL, u"=") and \
kids[2]:
#Hack to avoid "class X(=):" with this case.
results = [node] + kids
break
elif node.type == syms.arglist:
# Argument list... loop through it looking for:
# Node(*, [*, Leaf(token.NAME, u"metaclass"), Leaf(token.EQUAL, u"="), Leaf(*, *)]
for child in node.children:
if results: break
if child.type == token.COMMA:
#Store the last comma, which precedes the metaclass
comma = child
elif type(child) == Node:
meta = equal = name = None
for arg in child.children:
if arg == Leaf(token.NAME, u"metaclass"):
#We have the (metaclass) part
meta = arg
elif meta and arg == Leaf(token.EQUAL, u"="):
#We have the (metaclass=) part
equal = arg
elif meta and equal:
#Here we go, we have (metaclass=X)
name = arg
results = (comma, meta, equal, name)
break
return results