Create a list of substrings from string

Question

I have this string:

"<C (programming language)> <C++ (programming language)> <Programming Languages> <Computer Programming> "

And i want to obtain a list of substrings, like this:

['<C (programming language)>','<C++ (programming language)>','<Programming Languages>','<Computer Programming>']

I tried to use re library python but without success

What regular expressions have you tried so far? Are you able to extract at least one substring, e.g. just the first: "<C (programming language)>"? — Rishi
– Rishi, Commented Nov 11, 2015 at 20:35
I have tried re.search or re.match for find all substrings with this feature <sub-string> So i use this pattern <.*?> but i have no match. — Cosma Iaffaldano
– Cosma Iaffaldano, Commented Nov 11, 2015 at 20:47
<.*?> should have worked, as you have correctly used the non-greedy *?. Try that with the answer you picked. But this greedy * vs. non-greedy *? is always confusing, so I'd also go with the much clearer <[^>]*> or <[^>]+>. — Rishi
– Rishi, Commented Nov 11, 2015 at 21:50

tobspr · Accepted Answer · 2015-11-11 20:40:32Z

6

Using regular expressions, you can use:

import re
regexp = re.compile("<[^>]+>")
matches = regexp.findall(my_string)

The regular expression basically matches everything starting with a '<' and ending with a '>'. findall then returns all found matches.

answered Nov 11, 2015 at 20:40

tobspr

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Comments

Daniel · Accepted Answer · 2015-11-11 20:45:27Z

1

This can be done using the re import, although another solution would be to use the split method as shown here:

st = st.split('>')  # splits the string to a list made of elements divided by the '>' sign but deletes the '>' sign
del st[len(st) - 1]  # Splitting your String like we did will add another unneccesary element in the end of the list
st = [i + ">" for i in st]  # adds back the '>' sign to the every element of the list

Hope it helped

answered Nov 11, 2015 at 20:45

Daniel

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