Create a tabular data from raw datafile

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Input in a text file :

Combination: 1 . 1 . 1 . 1
var_a: 33
op: -9.234727046103648
Combination: 1 . 1 . 1 . 2
var_a: 31
op: -9.234270216065962
Combination: 1 . 1 . 1 . 3
var_a: 39
op: -9.233204788566372
Combination: 1 . 1 . 1 . 4
var_a: 50
op: -9.235195862495413

Desired output in a csv/txt:

combination,var_a,op
1.1.1.1,33,-9.234727046103648
1.1.1.2,31,-9.234270216065962
1.1.1.3,39,-9.233204788566372
1.1.1.4,50,-9.235195862495413 <pre>

What I have tried:

Should I use regex or is there a simple way?

Posted 25-Apr-22 21:08pm

A v Nov2021

Updated 25-Apr-22 22:14pm

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Richard MacCutchan · Answer 1 · 2022-04-25T21:35:00

You should create a list of tuples from the inputs. Read each set of three lines, and extract the values. Create a tuple of these values and add it to the list. Once you have all the data you can write it out to a .csv file.

See 7. Input and Output — Python 3.10.4 documentation[^] and 5. Data Structures — Python 3.10.4 documentation[^].

CPallini · Answer 2 · 2022-04-25T22:14:00

Solution 2

There is a way simpler than using regular expressions: you can split every line, using ":" as separator, e.g.

Python

line = "Combination: 1 . 1 . 1 . 1"
l = line.split(":")
print(l[1])

outputs

1 . 1 . 1 . 1

Posted 25-Apr-22 22:14pm

CPallini