本文介绍了Python 中任何支持将长字符串转储为块文字或折叠块的 yaml 库?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我希望能够转储包含长字符串的字典,为了便于阅读,我希望以块样式使用这些长字符串.例如:
I'd like to be able to dump a dictionary containing long strings that I'd like to have in the block style for readability. For example:
foo: |
this is a
block literal
bar: >
this is a
folded block
PyYAML 支持以这种方式加载文档,但我似乎找不到一种方法来以这种方式转储文档.我错过了什么吗?
PyYAML supports the loading of documents with this style but I can't seem to find a way to dump documents this way. Am I missing something?
推荐答案
import yaml
class folded_unicode(unicode): pass
class literal_unicode(unicode): pass
def folded_unicode_representer(dumper, data):
return dumper.represent_scalar(u'tag:yaml.org,2002:str', data, style='>')
def literal_unicode_representer(dumper, data):
return dumper.represent_scalar(u'tag:yaml.org,2002:str', data, style='|')
yaml.add_representer(folded_unicode, folded_unicode_representer)
yaml.add_representer(literal_unicode, literal_unicode_representer)
data = {
'literal':literal_unicode(
u'by hjw ___\n'
' __ /.-.\\\n'
' / )_____________\\\\ Y\n'
' /_ /=== == === === =\\ _\\_\n'
'( /)=== == === === == Y \\\n'
' `-------------------( o )\n'
' \\___/\n'),
'folded': folded_unicode(
u'It removes all ordinary curses from all equipped items. '
'Heavy or permanent curses are unaffected.\n')}
print yaml.dump(data)
结果:
folded: >
It removes all ordinary curses from all equipped items. Heavy or permanent curses
are unaffected.
literal: |
by hjw ___
__ /.-.\
/ )_____________\\ Y
/_ /=== == === === =\ _\_
( /)=== == === === == Y \
`-------------------( o )
\___/
为了完整性,还应该有 str 实现,但我会很懒:-)
For completeness, one should also have str implementations, but I'm going to be lazy :-)
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