bug#38426: 27.0.50; [PATCH] * python.el: new function python-shell-send-statement

[lin.sun]

>From 61db0e91094297ddca302eaf691cf5b4ff82ebf6 Mon Sep 17 00:00:00 2001
From: "lin.sun" <lin.sun@zoom.us>
Date: Fri, 29 Nov 2019 03:10:12 -0500
Subject: [PATCH] * python.el: new function python-shell-send-statement

Add new function `python-shell-send-statement' and bind to key "C-c
C-e" for sending statement under cursor to inferior Python process.
---
 lisp/progmodes/python.el | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 8e7d9f2..24216af 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -318,6 +318,7 @@ python-mode-map
     ;; Shell interaction
     (define-key map "\C-c\C-p" 'run-python)
     (define-key map "\C-c\C-s" 'python-shell-send-string)
+    (define-key map "\C-c\C-e" 'python-shell-send-statement)
     (define-key map "\C-c\C-r" 'python-shell-send-region)
     (define-key map "\C-\M-x" 'python-shell-send-defun)
     (define-key map "\C-c\C-c" 'python-shell-send-buffer)
@@ -357,6 +358,8 @@ python-mode-map
          :help "Eval string in inferior Python session"]
         ["Eval buffer" python-shell-send-buffer
          :help "Eval buffer in inferior Python session"]
+        ["Eval statement" python-shell-send-statement
+         :help "Eval statement in inferior Python session"]
         ["Eval region" python-shell-send-region
          :help "Eval region in inferior Python session"]
         ["Eval defun" python-shell-send-defun
@@ -3123,6 +3126,23 @@ python-shell-send-region
     (message "Sent: %s..." (match-string 1 original-string))
     (python-shell-send-string string process)))
 
+(defun python-shell-send-statement (&optional send-main msg)
+  "Send the statement delimited by `python-nav-beginning-of-statement' and
+`python-nav-end-of-statement' to inferior Python process. When optional
+argument SEND-MAIN is non-nil, allow execution of code inside blocks
delimited
+by \"if __name__== \\='__main__\\=':\". When called interactively SEND-MAIN
+defaults to nil, unless it's called with prefix argument. When optional
+argument MSG is non-nil, forces display of a user-friendly message if
there's
+no process running; default to t when called interactively. If there is
region
+be activated, it present as `python-shell-send-region'."
+  (interactive (list current-prefix-arg t))
+  (if (region-active-p)
+      (python-shell-send-region (region-beginning) (region-end) send-main
msg)
+    (python-shell-send-region
+     (save-excursion (python-nav-beginning-of-statement))
+     (save-excursion (python-nav-end-of-statement))
+     send-main msg)))
+
 (defun python-shell-send-buffer (&optional send-main msg)
   "Send the entire buffer to inferior Python process.
 When optional argument SEND-MAIN is non-nil, allow execution of
-- 
2.2.0