How to save and load cookies in Playwright?

When web scraping, we might want to pause our scraping session by saving cookies and resume it later. Using Playwright, to save and load cookies we need to refer to the context object which has methods cookies() and add_cookies():

import json
from pathlib import Path

from playwright.sync_api import sync_playwright

with sync_playwright() as pw:
    browser = pw.chromium.launch(headless=False)
    # To save cookies to a file first extract them from the browser context:
    context = browser.new_context(viewport={"width": 1920, "height": 1080})
    page = context.new_page()
    cookies = context.cookies()

    # Then, we can restore cookies from file:
    context = browser.new_context(viewport={"width": 1920, "height": 1080})
    page = context.new_page()
    print(context.cookies())  # we can test whether they were set correctly
    # will print:
            "sameSite": "Lax",
            "name": "mycookie",
            "value": "myvalue",
            "domain": "",
            "path": "/",
            "expires": -1,
            "httpOnly": False,
            "secure": False,

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