发现aa中存在一个人成绩存在多个综合测评、综合排名的缺陷,把a也添加到by=c("学号","课程名称","综合排名")当中 只要第一个学期和第二个学期综合排名不一样时,不显示合并成功的数据!!! merge()函数对数据的操作还是挺严格的!!!
复制 Cloud Studio代码运行 importrequestsfrombs4importBeautifulSoupimportpandasaspdfromconcurrent.futuresimportThreadPoolExecutor# 代理IP设置 16yun爬虫代理proxy={"http":"http://username:password@proxy.16yun.cn:proxy-port","https":"https://username:password@proxy.16yun.cn:proxy-port",}# 设置头信息hea...
data = cbpp, family = binomial)family = binomial) >Error in gm2$call : $ operator not defined for this S4 class 当我单击rstudio< 浏览1提问于2021-10-25得票数 2 回答已采纳 5回答 使用向量名称在R中打印表 我正在尝试创建一些表对象,这些对象可以插入到html页面中,取消编织,并希望能够循环使用...
I took the example listed in this blogpost and tried to replicate it using glmnet: https://www.alexpghayes.com/blog/implementing-the-super-learner-with-tidymodels/ I wanted to use binary classification so I excluded one of the factor lev...
Win7 Python3.6 读写csv文件 读文件时先产生str的列表,把最后的换行符删掉;然后一个个str转换成int ## 读写csv文件 csv_file = 'datas.csv' csv...('\n') csv.close() result = [] with open(csv_file,'r') as f: for line in f: linelist = line.split...', 'w', encoding='utf8')...