问题描述
rpy2的文档指出，robjects.r对象可以访问R全局环境.有没有办法将这种全球环境刷新"到其初始状态?
The documentation for rpy2 states that the robjects.r object gives access to an R global environment. Is there a way to "refresh" this global environment to its initial state?
我希望能够将全局环境还原到导入但尚未使用rpy2.robjects模块时的状态.通过这种方式，我不必担心长时间运行的作业中的内存泄漏或其他意外的副作用.是的，刷新环境可能会引入不同类别的错误，但是我认为这将是一次成功.
I would like to be able to restore the global environment to the state it was in when the rpy2.robjects module was imported but not yet used. In this manner, I don't have to worry about memory leaks on long running jobs or other unexpected side effects. Yes, refreshing the environment could introduce a different category of bug, but I believe in my case it will be a win.
推荐答案
让您的问题从字面上讲是什么意思，如果您只想清除.GlobalEnv，则只需一行即可:
Taking your question to mean literally what it says, if you just want to clear out .GlobalEnv, you can do that with a single line:
rm(list = ls(all.names=TRUE))
all.names=TRUE位是必需的，因为香草ls()不会返回某些对象名称.例如:
The all.names=TRUE bit is necessary because some object names are not returned by vanilla ls(). For example:
x <- rnorm(5)
ls()
# [1] "x"
# Doesn't remove objects with names starting with "."
rm(list=ls())
ls(all.names = TRUE)
# [1] ".Random.seed"
# Removes all objects
rm(list = ls(all.names=TRUE))
ls(all.names = TRUE)
# character(0)
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