我有一个my_yaml.yml
文件,其中包含以下内容:
my_yaml:
person: >
John|Doe|48,
Jack|Black|39
skills:
- name: superhero
abilities:
- swim
- run
special_chars:
- '! | " "'
- '+ | " "'
- '\ | " "'
- 'Á | "A"'
- 'É | "E"'
- 'Ű | "U"'
- 'Û | "U"'
我想加载它然后转储到具有完全相同格式的my_yaml_new.yml
文件中。原始输入文件中的字符有。我的代码是:
import yaml
my_yaml = yaml.load(open('my_yaml.yml', encoding='utf8')) # without "utf8" encoding I get "'charmap' codec can't decode byte..." error
我可以dump
进入控制台,但 1) abilities
& name
已更改:(
yaml.dump(my_yaml, default_flow_style=False, allow_unicode=True)
结果是:
'my_yaml:\n person: >\n John|Doe|48, Jack|Black|39\n skills:\n - abilities:\n - swim\n - run\n name: superhero\n special_chars:\n - \'! | " "\'\n - + | " "\n - \\ | " "\n - Á | "A"\n - É | "E"\n - Ű | "U"\n - Û | "U"\n'
当我尝试转储到文件中时:
with open('my_yaml_new.yml', 'w') as outfile:
yaml.dump(my_yaml, outfile, default_flow_style=False, allow_unicode=True)
2)由于字符Û
,我收到以下错误:
UnicodeEncodeError:' charmap'编解码器不能对字符' \ xdb'进行编码。在 位置0:字符映射到未定义
如果我从输入my_yaml.yml
文件中删除此行,则上面的转储成功,但 3) person
字符串处的多行变为一行:(< / p>
my_yaml:
person: >
John|Doe|48, Jack|Black|39
skills:
- abilities:
- swim
- run
name: superhero
special_chars:
- '! | " "'
- + | " "
- \ | " "
- Á | "A"
- É | "E"
- Ű | "U"
4)我的单引号(&#39;)也从special_chars
消失了:(
5)并注意skills
的元素没有缩进:(
我尝试了these解决方案但没有成功。并且import ruamel.yaml as yaml
也没有帮助。
更新
好的,以下精彩套餐解决了问题 1)&amp; 4),我可以在多行值上将>
替换为|
,因此 3)也会得到解决。也许 5)不是一个大问题。但是我仍然在努力处理Û
或Ǘ
这样的特殊字符,所以我仍然在寻找问题的解决方案 2) ......
from ruamel import yaml
my_yaml = yaml.round_trip_load(open('dmy_yaml.yml', encoding='utf8'), preserve_quotes=True)
with open('my_yaml_new.yml', 'w') as outfile:
yaml.round_trip_dump(my_yaml, outfile, default_flow_style=False, allow_unicode=True)
答案 0 :(得分:1)
我不确定您为什么会遇到unicode问题。如果您拥有my_yaml.yml
和程序try.py
:
import sys
import ruamel.yaml
with open('my_yaml.yml') as fp:
yaml_str = fp.read().replace(': >\n', ': |\n')
yaml = ruamel.yaml.YAML()
yaml.indent(mapping=2, sequence=4, offset=2)
yaml.preserve_quotes = True
data = yaml.load(yaml_str)
new_file = 'my_yaml_new.yml'
with open(new_file, 'w') as ofp:
yaml.dump(data, ofp)
然后产生:
my_yaml:
person: |
John|Doe|48,
Jack|Black|39
skills:
- name: superhero
abilities:
- swim
- run
special_chars:
- '! | " "'
- '+ | " "'
- '\ | " "'
- 'Á | "A"'
- 'É | "E"'
- 'Ű | "U"'
- 'Û | "U"'
在适用于Python2和Python3的虚拟环境中,带有ruamel.yaml 0.15.40。
我用过:
for n in 2 3 ; do mktmpenv -p /opt/python/$n/bin/python -qq -i ruamel.yaml; python --version; python try.py; deactivate; done
哪个当然依赖于/opt/python/2
下安装的Python 2和3的(最新)版本。 /opt/python/3
(它们在我的Linux开发系统上)。
请注意,Unicode没问题,yaml.indent(mapping=2, sequence=4, offset=2)
保留了源缩进,但是您仍然需要将折叠的多行标量更改为文字样式(我在读入{{1}时会这样做) }),因为ruamel.yaml不支持保留它(主要是因为没有简单的方法可以透明地指示原始折叠点)。