本文整理汇总了Python中mako.pyparser.FindIdentifiers方法的典型用法代码示例。如果您正苦于以下问题：Python pyparser.FindIdentifiers方法的具体用法？Python pyparser.FindIdentifiers怎么用？Python pyparser.FindIdentifiers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mako.pyparser的用法示例。
在下文中一共展示了pyparser.FindIdentifiers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: __init__
# 需要导入模块: from mako import pyparser [as 别名]
# 或者: from mako.pyparser import FindIdentifiers [as 别名]
def __init__(self, code, **exception_kwargs):
self.code = code
# represents all identifiers which are assigned to at some point in
# the code
self.declared_identifiers = set()
# represents all identifiers which are referenced before their
# assignment, if any
self.undeclared_identifiers = set()
# note that an identifier can be in both the undeclared and declared
# lists.
# using AST to parse instead of using code.co_varnames,
# code.co_names has several advantages:
# - we can locate an identifier as "undeclared" even if
# its declared later in the same block of code
# - AST is less likely to break with version changes
# (for example, the behavior of co_names changed a little bit
# in python version 2.5)
if isinstance(code, compat.string_types):
expr = pyparser.parse(code.lstrip(), "exec", **exception_kwargs)
else:
expr = code
f = pyparser.FindIdentifiers(self, **exception_kwargs)
f.visit(expr)