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我有一個在MySQL數據集上執行GLM的基本R腳本。這在bash中使用Rscript運行良好。但是我想在python腳本中調用它,所以我可以將它添加到循環中,我可以創建sql語句,但我似乎無法使用rpy2將它傳遞給R;使用rpy2將Python變量傳遞給R
for word in words:
sql_scores = "select a.article_id, response, score from scores as a join profile as b on a.article_id = b.article_id where response in (1,0) and keyword = '%s';" % (word[0])
robjects.r("library(RMySQL)")
robjects.r("mydb = dbConnect(MySQL(), user='me', password='xxxx', host='aws.host', dbname='mydb')")
robjects.r("results = fetch(dbSendQuery(mydb, '%s'))") % (sql_scores)
robjects.r("model <- glm(response ~ score , data=results, family=binomial)")
robjects.r("summary(model)")
如果我打印sql_scores我可以直接在MySQL中運行這個罰款。但是Python會產生這個錯誤;
Loading required package: DBI
Traceback (most recent call last):
File "keyword_searcher.py", line 30, in <module>
robjects.r("results = fetch(dbSendQuery(mydb, '%s'))") % (sql_scores)
File "/usr/local/lib/python2.7/dist-packages/rpy2/robjects/__init__.py", line 268, in __call__
p = rinterface.parse(string)
ValueError: Error while parsing the string.
我想不通的正確語法:
robjects.r("results = fetch(dbSendQuery(mydb, %s))") % (sql_scores)