本文整理汇总了Python中lib2to3.pygram.token.LPAR属性的典型用法代码示例。如果您正苦于以下问题：Python token.LPAR属性的具体用法？Python token.LPAR怎么用？Python token.LPAR使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类lib2to3.pygram.token的用法示例。
在下文中一共展示了token.LPAR属性的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: check_future_import
# 需要导入模块: from lib2to3.pygram import token [as 别名]
# 或者: from lib2to3.pygram.token import LPAR [as 别名]
def check_future_import(node):
"""If this is a future import, return set of symbols that are imported,
else return None."""
# node should be the import statement here
savenode = node
if not (node.type == syms.simple_stmt and node.children):
return set()
node = node.children[0]
# now node is the import_from node
if not (node.type == syms.import_from and
# node.type == token.NAME and # seems to break it
hasattr(node.children[1], 'value') and
node.children[1].value == u'__future__'):
return set()
if node.children[3].type == token.LPAR:
node = node.children[4]
else:
node = node.children[3]
# now node is the import_as_name[s]
# print(python_grammar.number2symbol[node.type]) # breaks sometimes
if node.type == syms.import_as_names:
result = set()
for n in node.children:
if n.type == token.NAME:
result.add(n.value)
elif n.type == syms.import_as_name:
n = n.children[0]
assert n.type == token.NAME
result.add(n.value)
return result
elif node.type == syms.import_as_name:
node = node.children[0]
assert node.type == token.NAME
return set([node.value])
elif node.type == token.NAME:
return set([node.value])
else:
# TODO: handle brackets like this:
# from __future__ import (absolute_import, division)
assert False, "strange import: %s" % savenode