- 已编辑
dt[,fwrite(.SD,paste0(.BY,".csv")),"店铺"]
这样可以正常运行
dt[,write.xlsx(.SD,paste0(.BY,".xlsx")),"店铺"]
只有第一个分组成功,后面就会报错,应该要怎么改一下?
dt[,fwrite(.SD,paste0(.BY,".csv")),"店铺"]
这样可以正常运行
dt[,write.xlsx(.SD,paste0(.BY,".xlsx")),"店铺"]
只有第一个分组成功,后面就会报错,应该要怎么改一下?
好家伙,vscode同人是吧
download.file(url, destfile, mode = "wb")
帮助里有说明
The choice of binary transfer (mode = "wb" or "ab") is important on Windows, since unlike Unix-alikes it does distinguish between text and binary files and for text transfers changes \n line endings to \r\n (aka ‘CRLF’).
On Windows, if mode is not supplied (missing()) and url ends in one of .gz, .bz2, .xz, .tgz, .zip, .jar, .rda, .rds or .RData, mode = "wb" is set so that a binary transfer is done to help unwary users.
Code written to download binary files must use mode = "wb" (or "ab"), but the problems incurred by a text transfer will only be seen on Windows.
前两天更新R 4.3之后,发现使用dir函数获取文件列表的时候会有文件获取不了,这是怎么回事?
又下载了4.2的版本,发现确实是版本的原因
参数里class = none 试试
LTkongjianyang 那你试下 len(dir(pandas.DataFrame))