[英]remove from values from yaml file if they match items in list python
Here is my yaml file这是我的 yaml 文件
cat host.yaml
list1:
- host-1
- host-2
- host-3
- host-4
list2:
- host-5
- host-6
- host-7
- host-8
list3:
- host-9
- host-10
- host-11
- host-12
list4:
- host-13
- host-14
- host-15
- host-16
Here is my list of hosts这是我的主机列表
cat host.list
host-1
host-5
host-7
host-11
host-16
I am trying to write a program/script that takes host.yaml and host.list as input and if hosts in the host.list matches hosts in the host,yaml it should edit the yaml and remove those hosts.我正在尝试编写一个程序/脚本,将host.yaml和host.list作为输入,如果 host.list 中的主机与主机yaml中的主机匹配,它应该编辑 yaml 并删除这些主机。
In the above scenario python write_to_yaml.py host.yaml host.list should write below to yaml file.在上面的场景中python write_to_yaml.py host.yaml host.list应该写入下面的 yaml 文件。
cat host.yaml
list1:
- host-2
- host-3
- host-4
list2:
- host-6
- host-8
list3:
- host-9
- host-10
- host-12
list4:
- host-13
- host-14
- host-15
Please forgive me if this is a silly question, I am very very new to Python.如果这是一个愚蠢的问题,请原谅我,我是 Python 的新手。
You can do it by first installing pyyaml
via:您可以通过以下方式首先安装
pyyaml
来完成此操作:
pip install pyyaml
And then you can use the library to read and write your yaml files like so:然后您可以使用该库来读取和写入您的 yaml 文件,如下所示:
import yaml
output = {}
host_set = []
# get list of hosts to exclude
with open(r'host.list') as file:
hosts = yaml.load(file, Loader=yaml.FullLoader)
host_set = set(hosts.split(" "))
# read host.yaml
with open(r'host.yaml') as file:
documents = yaml.full_load(file)
for l, hosts in documents.items():
output[l] = list(set(hosts) - host_set) # remove items from the read in list of hosts
# write to file
with open(r'output.yaml', 'w') as file:
documents = yaml.dump(output, file)
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