Code block header argument ~replace~ seems to not to work in conjunction with ~raw~. This leads to output being pre-pended instead of being replaced to the results block. Below is a working example: #+begin_src python :session *python-test* :results output raw replace print('This line will be added every time this code runs') #+end_src #+RESULTS: This line will be added every time this code runs Best regards, Sergey Koshelev. Setup info: Emacs : GNU Emacs 26.2 (build 1, x86_64-apple-darwin18.2.0, NS appkit-1671.20 Version 10.14.3 (Build 18D109)) of 2019-04-12 Package: Org mode version 9.3.7 (9.3.7-22-gbd9785-elpaplus @ /Users/skoshelev/.emacs.d/elpa/26.2/develop/org-plus-contrib-20200824/) current state: ============== (setq org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer) org-latex-listings 'minted org-capture-prepare-finalize-hook '(org-roam-capture--install-finalize) org-link-shell-confirm-function 'yes-or-no-p org-babel-after-execute-hook '(spacemacs/ob-fix-inline-images) org-metadown-hook '(org-babel-pop-to-session-maybe) org-roam-title-to-slug-function 'org-roam--title-to-slug org-clock-out-hook '(org-clock-remove-empty-clock-drawer) org-refile-targets '((org-agenda-files :maxlevel . 3)) org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function org-enforce-todo-dependencies t org-src-tab-acts-natively t org-odt-format-headline-function 'org-odt-format-headline-default-function org-latex-pdf-process '("pdflatex -shell-escape -interaction nonstopmode -output-directory %o %f" "pdflatex -shell-escape -interaction nonstopmode -output-directory %o %f") org-imenu-depth 8 org-download-annotate-function 'org-download-annotate-default org-agenda-files '("~/org/gcal.org" "~/org/Projects.org" "~/org/brain/Brain.org" "~/org/todo list.org") org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default org-latex-to-mathml-convert-command "latexmlmath \"%i\" --presentationmathml=%o" org-reveal-start-hook '(org-decrypt-entry) org-modules '(org-habit ol-w3m ol-bbdb ol-bibtex ol-docview ol-gnus ol-info ol-irc ol-mhe ol-rmail ol-eww) org-blocker-hook '(org-block-todo-from-children-or-siblings-or-parent) org-roam-buffer-prepare-hook '(org-roam-buffer--insert-title org-roam-buffer--insert-backlinks org-roam-buffer--insert-ref-links) org-archive-location "~/org/Archived projects.org::" org-mode-hook '(org-tempo-setup flyspell-mode spacemacs/org-setup-evil-surround spacemacs/load-yasnippet toc-org-enable org-superstar-mode #[0 "\301\211\207" [imenu-create-index-function org-imenu-get-tree] 2] #[0 "\300\301\302\303\304$\207" [add-hook change-major-mode-hook org-show-all append local] 5] #[0 "\300\301\302\303\304$\207" [add-hook change-major-mode-hook org-babel-show-result-all append local] 5] org-babel-result-hide-spec org-babel-hide-all-hashes org-download-enable dotspacemacs//prettify-spacemacs-docs spacemacs//org-babel-do-load-languages spacemacs//evil-org-mode org-eldoc-load spacemacs//init-company-org-mode company-mode) org-roam-mode t org-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"] org-outline-path-complete-in-steps nil org-archive-hook '(org-attach-archive-delete-maybe) org-agenda-restore-windows-after-quit t org-confirm-elisp-link-function 'yes-or-no-p org-startup-indented t org-gcal-fetch-file-alist '(("srg.koshelev@gmail.com" . "~/org/gcal.org") ("lifg1dsiqjkpd3ms7sq3sctr4s@group.calendar.google.com" . "~/org/work.org") ) org-roam-title-change-hook '(org-roam--update-file-name-on-title-change org-roam--update-links-on-title-change) org-brain-visualize-sort-function 'org-brain-title< org-download-file-format-function 'org-download-file-format-default org-roam-db-gc-threshold 402653184 org-roam-capture-function 'org-capture org-journal-mode-hook '(#[0 "\301\302\303\304$\207" [org-journal-encrypt-on add-hook org-journal-encryption-hook nil t] 5] (lambda nil (add-hook org-journal-encrypt-on (quote org-journal-encryption-hook) nil t) ) ) org-projectile-per-project-filepath "TODOs.org" org-agenda-before-write-hook '(org-agenda-add-entry-text) org-metaup-hook '(org-babel-load-in-session-maybe) org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn ENTRY)"] org-latex-format-drawer-function #[514 "\207" [] 3 "\n\n(fn _ CONTENTS)"] org-babel-pre-tangle-hook '(save-buffer) org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand) org-babel-load-languages '((python . t) (calc . t) (shell . t) (gnuplot . t) (ditaa . t)) org-log-done 'time org-journal-date-format "%A, %B %d %Y" org-brain-visualize-mode-hook '((lambda nil (define-key org-brain-visualize-mode-map (kbd "o") (quote brain-open-narrow)) ) ) org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS WIDTH)"] org-src-lang-modes '(("arduino" . arduino) ("redis" . redis) ("php" . php) ("C" . c) ("C++" . c++) ("asymptote" . asy) ("bash" . sh) ("beamer" . latex) ("calc" . fundamental) ("cpp" . c++) ("ditaa" . artist) ("dot" . fundamental) ("elisp" . emacs-lisp) ("ocaml" . tuareg) ("screen" . shell-script) ("shell" . sh) ("sqlite" . sql)) org-gcal-client-secret "h2gaJ80b9y0DIv4pWC5l7pi-" org-occur-hook '(org-first-headline-recenter) org-journal-encrypt-journal t org-log-into-drawer t org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines org-optimize-window-after-visibility-change) org-todo-keywords '((sequence "TODO(t)" "NEXT(n)" "WAITING(w)" "|" "POSTPONED(p)" "CANCEL(c)" "DONE(d)") ) org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate) org-capture-before-finalize-hook '(org-gcal--capture-post) org-capture-mode-hook '(spacemacs//org-capture-start) org-clock-persist-file "/Users/skoshelev/.emacs.d/.cache/org-clock-save.el" org-gcal-client-id "525889303624-nlher67h6k5pq5n8p2r288gv7a7s6unf.apps.googleusercontent.com" org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function org-latex-prefer-user-labels t org-journal-dir "~/org/journal/" org-babel-tangle-lang-exts '(("python" . "py") ("emacs-lisp" . "el") ("elisp" . "el")) org-publish-timestamp-directory "/Users/skoshelev/.emacs.d/.cache/.org-timestamps/" org-export-async-init-file "/Users/skoshelev/.emacs.d/layers/+emacs/org/local/org-async-init.el" org-refile-use-outline-path 'file org-id-locations-file "/Users/skoshelev/.emacs.d/.cache/.org-id-locations" org-confirm-shell-link-function 'yes-or-no-p org-link-parameters '(("eww" :follow eww :store org-eww-store-link) ("rmail" :follow org-rmail-open :store org-rmail-store-link) ("mhe" :follow org-mhe-open :store org-mhe-store-link) ("irc" :follow org-irc-visit :store org-irc-store-link :export org-irc-export) ("info" :follow org-info-open :export org-info-export :store org-info-store-link) ("gnus" :follow org-gnus-open :store org-gnus-store-link) ("docview" :follow org-docview-open :export org-docview-export :store org-docview-store-link) ("bibtex" :follow org-bibtex-open :store org-bibtex-store-link) ("bbdb" :follow org-bbdb-open :export org-bbdb-export :complete org-bbdb-complete-link :store org-bbdb-store-link) ("w3m" :store org-w3m-store-link) ("brainswitch" :complete org-brain--switch-link-complete :follow org-brain--switch-link-follow) ("brain-friend" :complete #[0 "\301!\207" [org-brain-friend-link-name org-brain-link-complete] 2] :follow org-brain-goto) ("brain-parent" :complete #[0 "\301!\207" [org-brain-parent-link-name org-brain-link-complete] 2] :follow org-brain-goto) ("brain-child" :complete #[0 "\301!\207" [org-brain-child-link-name org-brain-link-complete] 2] :follow org-brain-goto) ("brain" :complete org-brain-link-complete :follow org-brain-goto :store org-brain-link-store) ("attachment" :follow org-attach-open-link :export org-attach-export-link :complete org-attach-complete-link) ("roam" :follow org-roam-link-follow-link) ("id" :follow org-id-open :face org-roam--id-link-face) ("orgit-rev" :store orgit-rev-store :follow orgit-rev-open :export orgit-rev-export :complete orgit-rev-complete-link) ("orgit-log" :store orgit-log-store :follow orgit-log-open :export orgit-log-export :complete orgit-log-complete-link) ("orgit" :store orgit-status-store :follow orgit-status-open :export orgit-status-export :complete orgit-status-complete-link) ("file+sys") ("file+emacs") ("shell" :follow org-link--open-shell) ("news" :follow #[257 "\301\300\302Q!\207" ["news" browse-url ":"] 5 "\n\n(fn URL)"]) ("mailto" :follow #[257 "\301\300\302Q!\207" ["mailto" browse-url ":"] 5 "\n\n(fn URL)"]) ("https" :follow #[257 "\301\300\302Q!\207" ["https" browse-url ":"] 5 "\n\n(fn URL)"]) ("http" :follow #[257 "\301\300\302Q!\207" ["http" browse-url ":"] 5 "\n\n(fn URL)"]) ("ftp" :follow #[257 "\301\300\302Q!\207" ["ftp" browse-url ":"] 5 "\n\n(fn URL)"]) ("help" :follow org-link--open-help) ("file" :complete org-link-complete-file :face org-roam--file-link-face) ("elisp" :follow org-link--open-elisp) ("doi" :follow org-link--open-doi)) org-journal-file-type 'monthly org-latex-format-headline-function 'org-latex-format-headline-default-function org-present-mode-hook '(spacemacs//org-present-start) org-capture-templates '(("t" "Next" entry (file "~/org/todo list.org") "* NEXT %?\n%U" :empty-lines 1) ("p" "Project" entry (file "~/org/Projects.org") "* %? [%]\n%U\n** NEXT Define next action" :empty-lines 0) ) org-link-translation-function 'toc-org-unhrefify org-link-elisp-confirm-function 'yes-or-no-p org-capture-after-finalize-hook '(google-calendar/sync-cal-after-capture) org-latex-format-inlinetask-function 'org-latex-format-inlinetask-default-function org-tab-before-tab-emulation-hook '(org-tempo-complete-tag) org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"] org-latex-packages-alist '(("" "minted")) org-image-actual-width nil org-roam-directory "~/org/roam" org-journal-file-format "%Y-%m" org-present-mode-quit-hook '(spacemacs//org-present-end) org-html-format-headline-function 'org-html-format-headline-default-function org-confirm-babel-evaluate nil org-agenda-custom-commands '(("w" "Weekly review" tags "CLOSED>=\"<-1w>\"")) org-download-link-format-function 'org-download-link-format-function-default org-download-abbreviate-filename-function 'file-relative-name org-default-notes-file "/Users/skoshelev/org/notes.org" ) Sent with [ProtonMail](https://protonmail.com) Secure Email.