HTTP/2 301 date: Wed, 31 Dec 2025 04:09:43 GMT content-type: text/html; charset=utf-8 content-length: 0 cross-origin-opener-policy: same-origin location: /lessons/plotting-dataframe/ nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1} referrer-policy: strict-origin-when-cross-origin report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=9eiSl4mSvCkELrfijt2%2FUeOF8obq14WVDBkL6nwoN2o%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1767154183"}],"max_age":3600} reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=9eiSl4mSvCkELrfijt2%2FUeOF8obq14WVDBkL6nwoN2o%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1767154183" server: cloudflare set-cookie: cid=d1849e8f8e68481fb5bb600ff431552c; expires=Thu, 31 Dec 2026 04:09:43 GMT; Max-Age=31536000; Path=/ strict-transport-security: max-age=31536000; includeSubDomains; preload vary: Cookie via: 2.0 heroku-router x-content-type-options: nosniff cf-cache-status: DYNAMIC cf-ray: 9b66ec500850f313-BLR alt-svc: h3=":443"; ma=86400 HTTP/2 302 date: Wed, 31 Dec 2025 04:09:44 GMT content-type: text/html; charset=utf-8 content-length: 0 cross-origin-opener-policy: same-origin location: /account/login/?next=%2Flessons%2Fplotting-dataframe%2F nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1} referrer-policy: strict-origin-when-cross-origin report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=FHqsqgRztzeTlLANZuA4T39pkjkrMnvUCLfadIykf%2B0%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1767154184"}],"max_age":3600} reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=FHqsqgRztzeTlLANZuA4T39pkjkrMnvUCLfadIykf%2B0%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1767154184" server: cloudflare set-cookie: origin=ref-realpython.com; expires=Mon, 25 Sep 2028 04:09:44 GMT; Max-Age=86313600; Path=/ strict-transport-security: max-age=31536000; includeSubDomains; preload vary: Cookie via: 2.0 heroku-router x-content-type-options: nosniff x-frame-options: SAMEORIGIN cf-cache-status: DYNAMIC cf-ray: 9b66ec518a82f313-BLR alt-svc: h3=":443"; ma=86400 HTTP/2 200 date: Wed, 31 Dec 2025 04:09:44 GMT content-type: text/html; charset=utf-8 cache-control: max-age=0, no-cache, no-store, must-revalidate, private cross-origin-opener-policy: same-origin expires: Wed, 31 Dec 2025 04:09:44 GMT nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1} referrer-policy: strict-origin-when-cross-origin report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=FHqsqgRztzeTlLANZuA4T39pkjkrMnvUCLfadIykf%2B0%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1767154184"}],"max_age":3600} reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=FHqsqgRztzeTlLANZuA4T39pkjkrMnvUCLfadIykf%2B0%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1767154184" server: cloudflare set-cookie: csrftoken=vKJJdEAxi9DhNkbaMEIEcJ0fZvgL4MaC; expires=Wed, 30 Dec 2026 04:09:44 GMT; Max-Age=31449600; Path=/; SameSite=Lax; Secure strict-transport-security: max-age=31536000; includeSubDomains; preload vary: Cookie, Accept-Encoding via: 2.0 heroku-router x-content-type-options: nosniff x-frame-options: SAMEORIGIN cf-cache-status: DYNAMIC content-encoding: gzip cf-ray: 9b66ec534cf4f313-BLR alt-svc: h3=":443"; ma=86400