[Python] context.route_from_har is both saving as har-file and extracting some networking-log

I am trying to save the har-log of a session with playwright with

context.route_from_har(har=path_har, update=True)


I want it only as a single har-file but it also pollutes the directory of the script with files like JS-sripts, html, css, images, ... of the form 817ea1d1972ae248dc9eabba87e8d2256f84959d.js,

The program is executed as (venv)$ python app.py and the details of the code is below

from playwright.sync_api import sync_playwright


url = # some url
path_har = './session.har'

with sync_playwright() as p:
browser_args = (
...
)

browser = p.chromium.launch(
headless=False,
devtools=False, # only works when headless=False
ignore_default_args=browser_args
)

context = browser.new_context(
...
)

context.route_from_har(har=path_har, update=True)

page = context.new_page()
page.goto(url)

context.close() # close it to save har-file
browser.close()


Inspecting the directory content

(venv)$ ls - 1
817ea1d1972ae248dc9eabba87e8d2256f84959d.js
85245ea78118d39e8d9d4bc1ab216228e5d66ce2.html
a4ec070813be6ef3584dc6c1fbe2bf411d2833bf.css
[...]
session.har
app.py

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