Thanks to Ihor Radchenko and Liu Hui for valuable feedback on this
patch.
* lisp/ob-python.el (org-babel-execute:python): Parse graphics-file
from params, and pass it to `org-babel-python-evaluate'.
(org-babel-python--output-graphics-wrapper): New constant. Python
code to save graphical output.
(org-babel-python--def-format-value): New constant. Python function
to format and save value results to file. Includes handling for
graphics, dataframes, and arrays.
(org-babel-python-table-or-string): Prevent `org-babel-script-escape'
from mangling dict results.
(org-babel-python--setup-session): New function to
run setup code within Python session.
(org-babel-python-initiate-session-by-key): Replace lambda with
`org-babel-python--setup-session' in `python-shell-first-prompt-hook',
or run it directly if the session was started outside Org.
(org-babel-python-wrapper-method): Removed. Instead use part of the
string directly in `org-babel-python-evaluate-external-process'.
(org-babel-python-pp-wrapper-method): Removed. Pretty printing is now
handled by `org-babel-python--def-format-value'.
(org-babel-python--exec-tmpfile): Removed. Instead use the raw string
directly in `org-babel-python-evaluate-session'.
(org-babel-python-format-session-value): Updated to use
`org-babel-python--def-format-value' for formatting value result.
(org-babel-python-evaluate): New parameter graphics-file. Pass
graphics-file onto downstream helper functions.
(org-babel-python-evaluate-external-process): New parameter
graphics-file. Use `org-babel-python--output-graphics-wrapper' for
graphical output. For value result, use
`org-babel-python--def-format-value'. Don't call `org-trim' on
results, to prevent misalignment of pandas DataFrames.
(org-babel-python-evaluate-session): New parameter graphics-file. Use
`org-babel-python--output-graphics-wrapper' for graphical output.
Replace the removed constant `org-babel-python--exec-tmpfile' with the
string directly. Rename local variable tmp-results-file to
results-file, which may take the value of graphics-file when provided.
(org-babel-python-async-evaluate-session): New parameter
graphics-file. Use `org-babel-python--output-graphics-wrapper' for
graphical output. Rename local variable tmp-results-file to
results-file, which may take the value of graphics-file when provided.
579e8c5723