python 3.5-如何在yaml中打印带双引号的值?

我想打印一个yaml文件(带有键和值)和一些双引号之间的值。 我想使用这里提供的解决方案: How to print a value with double quotes and spaces in YAML?

不幸的是,当我为python 3.5安装ruamel.yaml时( sudo apt install python3-ruamel.yaml 我无法在脚本SalaStrug.Py中找到DuffQuoDeQualAdStRung()函数。 下面是它的样子:

from __future__ import absolute_import
from __future__ import print_function

__all__ = ["ScalarString", "PreservedScalarString"]

try:
    from .compat import text_type
except (ImportError, ValueError):  # for Jython
    from ruamel.yaml.compat import text_type


class ScalarString(text_type):
    def __new__(cls, *args, **kw):
        return text_type.__new__(cls, *args, **kw)


class PreservedScalarString(ScalarString):
    def __new__(cls, value):
        return ScalarString.__new__(cls, value)


def preserve_literal(s):
    return PreservedScalarString(s.replace('\r\n', '\n').replace('\r', '\n'))


def walk_tree(base):
    """
    the routine here walks over a simple yaml tree (recursing in
    dict values and list items) and converts strings that
    have multiple lines to literal scalars
    """
    from ruamel.yaml.compat import string_types

    if isinstance(base, dict):
        for k in base:
            v = base[k]
            if isinstance(v, string_types) and '\n' in v:
                base[k] = preserve_literal(v)
            else:
                walk_tree(v)
    elif isinstance(base, list):
        for idx, elem in enumerate(base):
            if isinstance(elem, string_types) and '\n' in elem:
                print(elem)
                base[idx] = preserve_literal(elem)
            else:
                walk_tree(elem)

目前这是我在使用ruamel.yamp.dump()获取我的yaml文件时获得的:

key1: 0,0,0,0
key2: 0,0,0,0

下面是我想要的yaml文件:

key1: "0,0,0,0"
key2: "0,0,0,0"

我该怎么解决这个问题呢?