reifying indent and dedent into braces

[Rustom Mody]

At http://www.secnetix.de/olli/Python/block_indentation.hawk
I find that the python code
.... if bar:
.... x = 42
.... else:
.... print foo
....

has its indentation structure made explicit as

<if> <foo> <:> [0]
<INDENT> <if> <bar> <:> [0, 4]
<INDENT> <x> <=> <42> [0, 4, 8]
<DEDENT> <DEDENT> <else> <:> [0]
<INDENT> <print> <foo> [0, 2]
<DEDENT> [0]

Is there any api in python for going from 1st to 2nd and back?

Context: I am trying to generate some python code and its
indentation=structure is giving me a headache!

 

[Stefan Behnel]

I am trying to generate some python code and its
indentation=structure is giving me a headache!

Have you considered searching the web for "Python code generator"?

Stefan

 

[Steven D'Aprano]

At http://www.secnetix.de/olli/Python/block_indentation.hawk I find that
the python code
... if bar:
... x = 42
... else:
... print foo
...

has its indentation structure made explicit as

<if> <foo> <:> [0]
<INDENT> <if> <bar> <:> [0, 4]
<INDENT> <x> <=> <42> [0, 4, 8]
<DEDENT> <DEDENT> <else> <:> [0]
<INDENT> <print> <foo> [0, 2]
<DEDENT> [0]

Have you looked at the tokenize module?

http://docs.python.org/library/tokenize.html

 

[rustom]

Have you looked at the tokenize module?

http://docs.python.org/library/tokenize.html

Thanks Steven -- that was what I was looking for.

 

[greg]

Context: I am trying to generate some python code and its
indentation=structure is giving me a headache!

When I generate Python code (or anything else with an
indented structure) I usually define myself a class with
a method for writing out a line, and a pair of methods
for increasing and decreasing the indentation level.
It keeps track of the current indentation level and
automatically prepends the appropriate amount of
whitespace to each line written out.