Grouping values with regular expressions regex - regex

Question

I have got a list of names within an Excel sheet (also in csv) and I made groups with the origin of the names.
This is what the groups I made look like.
Now I want to add a new column with the group name behind the name.
This is what I want to obtain.
How do I get this? Do I have to use regualar expressions for this?

Answer 1

You don't need regex here. For instance, you can use the csv module of python.
old.csv
groups,,,
Dutch,Lore,Kilian,Daan
German,Marte,,
USA,Eva,Judith,
python script using import csv
import csv
rows = []
with open('old.csv','r') as old_csv:
old = csv.reader(old_csv, delimiter=',')
old.next()
for row in old:
for name in row[1:]:
if name:
rows.append({'name':name,'group':row[0]})
with open('new.csv','w') as new_cvs:
fieldnames = ['name', 'group']
new = csv.DictWriter(new_cvs, fieldnames=fieldnames)
new.writer.writerow(new.fieldnames)
new.writerows(rows)
new.csv
name,group
Lore,Dutch
Kilian,Dutch
Daan,Dutch
Marte,German
Eva,USA
Judith,USA
You can also use xlrd and xlwt modules but you have to install them because they aren't standard.