如何调试这个非常简单的Jess代码？

Question

(deftemplate bikelife 
    (slot name) 
    (slot type)) 

(deffacts bike 
    (bikelife (name Strida) (type low_lifestyle)) 
    (bikelife (name Brompton) (type med_lifestyle)) 
    (bikelife (name Molton) (type high_lifestyle)) 
    (bikelife (name Specialized_AlleComp) (type low_sport)) 
    (bikelife (name Specialized_Tarmac) (type medium_sport)) 
    (bikelife (name Pinarello_DOGMA_F8) (type high_sport))) 
(defrule rule-1 
    (budget ?x) 
    (test (< ?x 300)) 
    (use_for lifestyle) 
    => 
    (assert (recommend low_lifestyle))) 

(defrule rule-2 
(budget ?x) 
(test (< ?x 300)) 
(use_for sport) 
=> 
(assert (recommend low_sport))) 

(defrule rule-3 

(budget ?x) 
(test (and (> ?x 300) (< ?x <500))) 
(use_for lifestyle) 
=> 
(assert (recommend med_lifestyle))) 

(defrule rule-4 

(budget ?x) 
(test (and (> ?x 300) (< ?x <500))) 
(use_for sport) 
=> 
(assert (recommend med_sport))) 

(defrule rule-5 

(budget ?x) 
(test (> ?x 500)) 
(use_for lifestyle) 
=> 
(assert (recommend high_lifestyle)))  


(defrule rule-6 

(budget ?x) 
(test (and (> ?x 300) (< ?x <500))) 
(use_for sport) 
=> 
(assert (recommend med_sport))) 

(defrule rule-7 

(budget ?x) 
(test (> ?x 500)) 
(use_for sport) 
=> 
(assert (recommend high_sport)))   


(defrule recommend-rule 
(recommend ?type) 
(bikelife (name ?x) (type ?type)) 
=> 
(printout t crlf "I recommend " ?x " for you." crlf crlf)) 
(defrule ask-1 
=> 
(printout t crlf "================================ ") 
(printout t crlf " testing testing testing. ") 
(printout t crlf "================================ " crlf crlf) 
(printout t "* How much are you going to spend on bike? ") 
(assert (budget (read))) 
(printout t "* what purpose? (lifestyle, sport)") 
(assert (use_for (read)))) 
(reset) 
(run) 

这是我推荐自行车的Jess码。我在代码中看不到任何错误。我已经尝试了数百次，来到堆栈溢出以获得一些 帮助。

该代码运作，因为我得到的预算价值和评估300,500，如果预算范围匹配我检查用户购买自行车的目的。之后，使用事实我想发送推荐信息。我怎么解决这个问题？

Answer 1

这应该或多或少的工作，除了错别字。在数字500的大多数情况下，我会看到它们中的一些，例如“tyle”而不是“type”，“user_for”而不是“use_for”，以及流浪的“<”。至少这三个错误中的第一个应该是当您运行此代码时由Jess报告。

存在的大多数文件可在Jess网站www.jessrules.com上找到。如果你搜索它们，有几个YouTube视频，并且有“Jess in Action”这本书。它已经绝版，但不难找到使用的副本。