Python-mode: Eval-Buffer [C-c C-c] doesn't run my script

Question

Here are my steps:

1- Switch to Shell C-c C-z

2- Click enter to accept

3- Eval-Buffer C-c C-c to run the script

I just got the following message:

sent: #!/usr/bin/env python...

Running Eval-File works fine. It's just Eval-Buffer what doesn't work.

Have I miss anything?

UPDATE:

I've just noticed that before running the script I get the following line printed in my messages buffer:

Can't guess python-indent-offset, using defaults: 4

Which is very strange because C-h-v python-indent-offset shows me that it's already set to 4 spaces...

Answer 1

You need to call eval-buffer with a prefix argument, C-uC-c C-c

From documentation of python-shell-send-buffer

(python-shell-send-buffer &optional SEND-MAIN)

Send the entire buffer 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.

Answer 2

I use this function for that

(defun shell-compile ()
      (interactive)
      (shell-command (concat "python " (buffer-file-name)))
      (if (<= (* 2 (window-height)) (frame-height))
          (enlarge-window 20)
        (/ (frame-height) 2)))
    (add-hook 'python-mode-hook
              '(lambda ()
                 (define-key (kbd "C-c C-c") 'shell-compile python-mode-map)))