我有一个这样的数据框
我想找出:
我可以使用以下代码来做到这一点:
provider "docker" {
host = "npipe:////.//pipe//docker_engine"
}
resource "docker_image" "mysql" {
name = "mysql:8"
//keep_locally = true
}
resource "docker_container" "mysql" {
name = "mysql"
image = docker_image.mysql.latest
restart = "always"
env = [
"MYSQL_ROOT_PASSWORD=root"
]
volumes {
volume_name = "mysql-vol"
container_path = "/var/lib/mysql"
}
ports {
internal = 3306
external = 3306
}
}
provider "mysql" {
endpoint = "127.0.0.1:3306"
username = "root"
password = "root"
}
resource "mysql_database" "test" {
name = "test"
depends_on = [docker_container.mysql]
}
但是,我想知道是否有更好的方法将两者结合在一起,例如
movie['Viewer_ID'].nunique()
movie.loc[movie['watched']==1,:]['Viewer_ID'].nunique()
有什么办法可以在agg函数中写条件计数吗?
答案 0 :(得分:0)
您可以使用.groupby()
:
view_count = movie.groupby('Viewer_id').watched.sum()
现在view_count
是一个以观看者ID为索引,以观看者总和为值的系列。您可以使用以下过滤器:
filtered = view_count.loc[view.count > 0]