如何使用 project-lib 将 csv 文件保存到云对象存储？

Posted 2023-03-28

【中文标题】如何使用 project-lib 将 csv 文件保存到云对象存储？

【英文标题】：how to save a csv file to cloud object storage using project-lib?

【发布时间】：2018-12-25 00:56:08

【问题描述】：

我有一个已写入笔记本文件系统的 csv 文件：

# read csv from object storage
df = read.csv2( ... )

# do some operations ...

# save new csv to notebook filesystem
file.remove('example.csv')
write.csv(df, file = "example.csv")

如何将此文件复制到项目的云对象存储中？

【参考方案1】：

这对我有用：

# import projectLib
library(projectLib)
project <- projectLib::Project$new(projectId="secret, projectToken="secret")

# get the file size:
csv.size = file.size('example.csv')

# read the file as a byte array
bytes.to.save = readBin('example.csv', 'raw', n = csv.size, size = NA_integer_, 
        signed = TRUE, endian = .Platform$endian)

# save the file to cloud object storage
project$save_data("example.csv", bytes.to.save, overwrite = TRUE)