parsing a tree of text first the right most aligned blocks of text and so on

[arvindikchari]

Hi

I have a tree / table of contents

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Cover     0 0       Copyright     0 0       Credits   0 0       About the Authors     0 0       About the Reviewer    0 0       Link Removed      0 0       Table of Contents     0 0       Preface   0 1       Chapter 1: Current Status of Python   1 2           Why and how does Python change?   2 2           Why and how does Python change?   2 3           Getting up to date with changes – PEP documents   3 4           Python 3 adoption at the time of writing this book    4 5           The main syntax differences and common pitfalls   5 5               The main syntax differences and common pitfalls   5 5               The main syntax differences and common pitfalls   5 6                   Syntax changes    6 7                   Changes in the standard library   7 8                   The popular tools and techniques used for maintaining cross-version compatibility     8 8               The popular tools and techniques used for maintaining cross-version compatibility     8 12          Not only CPython     12 13              Stackless Python     13 13              Stackless Python     13 14              IronPython   14 14              IronPython   14 15              PyPy     15 16          Modern approaches to Python development  16 17          Application-level isolation of Python environments   17 19              Why isolation?   19 21              virtualenv   21 21                  virtualenv   21 23                  venv     23 24                  Which one to choose?     24 24              Which one to choose?     24 25          System-level environment isolation   25 26              Virtual development environments using Vagrant   26 27              Containerization versus virtualization   27 28          Popular productivity tools   28 29              Custom Python shells – IPython, bpython, ptpython, and so on     29 30                  bpython  30 30                  bpython  30 30                  bpython  30 31                  Interactive debuggers

Now first I have to parse those lines of text that are right most aligned, then the next right most aligned and so on.
By right most aligned, I mean the first letter of the first word's starting position 's right alignment relative to pos = 1 cursor from left.

How do I go about doing this?

Thanks
Arvind.

Gribouillis write Nov-18-2024, 12:30 PM:
Please post all code, output and errors (it it's entirety) between their respective tags. Refer to BBCode help topic on how to post. Use the "Preview Post" button to make sure the code is presented as you expect before hitting the "Post Reply/Thread" button.

Also I removed irrelevant link

[Gribouillis]

Which output do you expect from the parsing of this text?

[BashBedlam]

This will give you the number of spaces before each line. I hope this helps

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

raw_text = """Cover     0 0       Copyright     0 0       Credits   0 0       About the Authors     0 0       About the Reviewer    0 0       Link Removed      0 0       Table of Contents     0 0       Preface   0 1       Chapter 1: Current Status of Python   1 2           Why and how does Python change?   2 2           Why and how does Python change?   2 3           Getting up to date with changes – PEP documents   3 4           Python 3 adoption at the time of writing this book    4 5           The main syntax differences and common pitfalls   5 5               The main syntax differences and common pitfalls   5 5               The main syntax differences and common pitfalls   5 6                   Syntax changes    6 7                   Changes in the standard library   7 8                   The popular tools and techniques used for maintaining cross-version compatibility     8 8               The popular tools and techniques used for maintaining cross-version compatibility     8 12          Not only CPython     12 13              Stackless Python     13 13              Stackless Python     13 14              IronPython   14 14              IronPython   14 15              PyPy     15 16          Modern approaches to Python development  16 17          Application-level isolation of Python environments   17 19              Why isolation?   19 21              virtualenv   21 21                  virtualenv   21 23                  venv     23 24                  Which one to choose?     24 24              Which one to choose?     24 25          System-level environment isolation   25 26              Virtual development environments using Vagrant   26 27              Containerization versus virtualization   27 28          Popular productivity tools   28 29              Custom Python shells – IPython, bpython, ptpython, and so on     29 30                  bpython  30 30                  bpython  30 30                  bpython  30 31                  Interactive debuggers """   text_lines = raw_text.splitlines () for line in text_lines :     # determine the number of spaces between first numbers and first letter     new_line = line [2: -1]   # remove leading numbers     indention = len (new_line) - len (new_line.lstrip ())     print ("\n", line)     print (f"     Indenttion is {indention}")