How to keep yaml Format when using yaml.SafeDumper

I have a YAML file

Version: "1.0"
title1: "Title 1"
title2: [Title 2]

I open the file using

def open_file(input_file):
    with open(input_file, encoding="utf8") as file:
        return_file = yaml.safe_load(file)
        return return_file

in runtime it looks like this:

{'Version': '1.0', 'title1': 'Title 1', 'title2': ['Title 2']}

the output I receive is:

Version: "1.0"
title1: Title 1
title2:
- Title 2

How do i keep the original formatting for "title1" and "title2" ?

I write the file as such:

    with open(output_file_name, "w", encoding="utf8") as dump_file:
        yaml.dump(<runtime_file>, dump_file, Dumper=MyDumper, sort_keys=False, allow_unicode=True)

with

class MyDumper(yaml.SafeDumper):
    def write_line_break(self, data=None):
        super().write_line_break(data)
        if len(self.indents) == 1:
            super().write_line_break()
        if len(self.indents) == 2:
            super().write_line_break()

You are using PyYAML and that supports only (a subset of) YAML 1.1, whereas YAML 1.2 was released more than thirteen
years ago. You should upgrade to ruamel.yaml (disclaimer: I am the author) that has been developed since 2014
to specifically preserve orginal layout, quotes, comments, anchors/aliases, number formats, etc.

import sys
import ruamel.yaml
from pathlib import Path

file_in = Path('input.yaml')
file_out = Path('output.yaml')
    
yaml = ruamel.yaml.YAML()
# yaml.indent(mapping=4, sequence=4, offset=2) 
yaml.preserve_quotes = True
data = yaml.load(file_in)
yaml.dump(data, file_out)

print(file_out.read_text())

which gives:

Version: "1.0"
title1: "Title 1"
title2: [Title 2]

Since some of your scalar strings are superfluously quoted and others are not, you
cannot easily achieve this in PyYAML. You would have to load the quoted strings into
a different class than the non-quoted ones, so that they dump back as their originals.
Depending on what you need to do with those loaded data, you need to make those classes behave
mostly like a normal string. For that you need to dig into the PyYAML internals. ruamel.yaml takes
care of all of that for you (in its default round-trip mode).