最近我想用我的 discord.py 机器人更多地使用 YAML 文件。所以我目前正在考虑如何为 YAML 文件中的特定键添加值。这是我当前的 YAML 文件:connected_guilds:
- 1st_guild_id每当它连接到另一个公会时,它应该如下所示:connected_guilds:
- 1st_guild_id
- 2nd_guild_id等等这是我当前的代码: with open('guilds.yaml', 'r+') as guild_add:
yaml.dump({'connected_guilds'.replace("'", ""): [guild_id]}, guild_add, indent=4)所以基本上我认为我是否应该有一个 if 子句来检查密钥是否已经存在,如果存在,请将其添加到下面,但在实现它时我仍然感到困惑。如果有人可以提供帮助,我将不胜感激!
1 回答

慕莱坞森
TA贡献1810条经验 获得超4个赞
您正在打开,但没有读取文件。您创建一个新列表而不是附加到现有列表。
这是如何做到的:
with open('guilds.yaml', 'r+') as f:
# load the content
content = yaml.safe_load(f)
# append the new id to the existing list
content["connected_guilds"].append(guild_id)
# reset the position in the file (it's at the end since we read the file)
f.seek(0)
# write the updated YAML to the file
yaml.dump(content, f)
# throw away any (old) content of the file after the current position,
# which is at the end of the YAML we just wrote.
# since we added more content, it's unlikely that there is more content here,
# but not impossible!
f.truncate()
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