我有这样的令牌序列:
TokenName(alphanum) value(printable) value(printable, optional) value(printable, optional) Literal(';')
通过示例:
Token1 "stringValue with escaped data eg: \" in it";
Token2 12;
Token3 0xaaaa; // and hex string indicated by 0x
Token4 "value1" 2 0xbbcc;
结果我除了:
[
['Token1', 'stringValue with escaped data eg: " in it'],
['Token2', 12],
['Token3', '0xaaaa'],
['Token4', ['value1', 2, '0xbbcc']],
]
现在我有这样的事情:
import pyparsing as p
non_semi = ''.join(c for c in p.printables if c != ';')
semi = p.Literal(';').suppress()
single_value = p.Word(non_semi) + semi
multi_value = p.Group(
p.Word(non_semi) +
p.Word(non_semi) +
p.Optional(p.Word(non_semi)) +
semi
)
value = single_value | multi_value
assignment = p.Group(p.Word(p.alphanum) + value)
bnf = p.Group(p.OneOrMore(assignment))
bnf.ignore(p.cStyleComment)
但是这段代码不会将12
更改为int(12)
并且还会在字符串中获得"
个字符,pyparsing可以处理此值转换吗?
修改
好的,我知道如何处理字符串:QuotedString有很多帮助
答案 0 :(得分:2)
好的,我找到了答案:
处理字符串:QuotedString
对于int和其他转换的处理,有一个令牌def的setParseAction
方法,可以采取例如。 lambda s, l, t: int(s)
param女巫会做的伎俩