Looking for indent advice howto in emacs python-mode

[Steven W. Orr]

Here's what I want to do:

if ( ( v == 1 )
or ( v == 2 )
or ( v == 3 ) ):
pass

but emacs (left to its own devices, does this.

if ( ( v == 1 )
or ( v == 2 )
or ( v == 3 ) ):
pass

It works great for me in C-mode. Does anyone know how to jimmie up
python-mode so it would know how to do this?

TIA


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steveo at syslang.net

 

[bruno.desthuilliers]

Here's what I want to do:

if ( ( v == 1 )
or ( v == 2 )
or ( v == 3 ) ):
pass

Why the parens ?

if a == 1 \
or b == 2 \
or c == 3:
pass

 

[Gabriel Genellina]

En Mon, 31 Mar 2008 16:36:13 -0300, (e-mail address removed)

Why the parens ?

if a == 1 \
or b == 2 \
or c == 3:
pass

I know it's mostly a matter of style, but I prefer to add parenthesis and
avoid line continuation characters. Sometimes I use parenthesis for
strings too, when multiline strings are not a good choice:

txt = ("En un lugar de "
"la Mancha, de cuyo "
"nombre no quiero "
"acordarme, no ha "
"mucho tiempo...")

(A multiline string would keep the inner \n but in this case I don't want
that)

 

[7stud]

Here's what I want to do:

if ( ( v == 1 )
   or ( v == 2 )
   or ( v == 3 ) ):
     pass

python indenting = 4 spaces

 

[Carl Banks]

Here's what I want to do:

if ( ( v == 1 )
or ( v == 2 )
or ( v == 3 ) ):
pass

but emacs (left to its own devices, does this.

if ( ( v == 1 )
or ( v == 2 )
or ( v == 3 ) ):
pass

It works great for me in C-mode. Does anyone know how to jimmie up
python-mode so it would know how to do this?

Not sure about the python.el that ships with emacs 21, but the python-
mode.el that is used in emacs 20, it can't be done without modifying
the Lisp code.

An open nesting character with nothing on the line following it will
indent the following line 4 (or whateve py-basic-indent is set to)
spaces. An open nesting character with something following it will
indent the following line to match the column of the first item.
There is no option to change this.

If you are not afraid of Elisp, then the function to modify is called
py-compute-indentation, and you should look for a comment with the
text "again mimic the first line item". That is where the indent in
this case is set. The code following the comment "elset they're about
to enter the first item" sets the indent for the other case. You
might want to use that code in all cases. (Warning: this may cause
problems elsewhere, such as nesting function call.)

And once again, all bets are off if you're using python.el in Emacs
21.


Carl Banks