使用python解析Yaml文件時出現問題

Question

我在 YML 文件中有以下部分，我正在嘗試讀取服務器的 IP 地址和主機名，以驗證我沒有重復（可以看到每個 IP 一次和每個主機名）

我在第一階段嘗試准備 IP 地址時失敗了。 很樂意在閱讀和驗證沒有重復方面獲得幫助

謝謝

import yaml


with open(r'.\environment.yml') as file:
    environment = yaml.load(file, Loader=yaml.FullLoader)
print(environment ['server_details']['ip'])

YML文件

server_details: - {ip: "{{ yum_repository.ip }}" , hostname: "{{ yum_repository.hostname }}"} - {ip: "{{ cloudera_managment_server.ip }}" , hostname: "{{ cloudera_managment_server.hostname }}"} - {ip: "{{ postgres_server.ip }}" , hostname: "{{ postgres_server.hostname }}"} - {ip: 10.201.51.30 , hostname: master1} - {ip: 10.201.51.31 , hostname: master2} - {ip: 10.201.51.32 , hostname: master3} - {ip: 10.201.51.36 , hostname: worker1} - {ip: 10.201.51.37 , hostname: worker2} - {ip: 10.201.51.38 , hostname: worker3} - {ip: 10.201.51.39 , hostname: kafka1} - {ip: 10.201.51.40 , hostname: kafka2} - {ip: 10.201.51.41 , hostname: kafka3} - {ip: 10.201.51.44 , hostname: gw1}

Answer 1

正如@AdamSmith 提到的，您應該先遍歷（或索引）列表。

import yaml


with open(r'.\environment.yml') as file:
    environment = yaml.load(file, Loader=yaml.FullLoader)
for server_detail in environment['server_details']:
    print(server_detail['ip'])

你也可以把它列出來

ip_list = [server_detail['ip'] for server_detail in environment['server_details']]