Extracting a determined value from a list

Question

I have a list from which I want to extract a number which corresponds to totalsec. I proceeded with the split method to constitute a list of list and then extract the totalsec but I got an error

"list has no attribute split".

Here is my list:

['nbresets:0,totalsec:14,lossevtec:0,lossevt:0,sevlossec:0,sevloss:0,paclosevtec:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,paclosevt:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,dellosevtec:0:0:0:0:0:0:0:0:0:0:0,dellosevt:0:0:0:0:0:0:0:0:0:0:0,dursevlossec:0:0:0:0:0:0:0:0:0:0:0:0,dursevloss:0:0:0:0:0:0:0:0:0:0:0:0,nbfailures:0,notif:2']

the number I want to extract from this list is 14.

Please if you have any Idea how to do that please help!

Asked By: Iriel

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Source

Answer 1

You cannot perform a split directly on the list, you can only perform a split on a string (since the list is already split). So iterate over your list of strings and split each of them.

I will shorten the code to make it more readable, just replace it with your list.

strings = ['nbresets:0,totalsec:14,lossevtec:0,lossevt:0']
for s in strings:
    # first split by comma to get the single entries
    for line in s.split(','):
        params = line.split(':')
        if params[0] == 'totalsec':
            print(params[1]) # this should return 14

Answered By: Leon

Answer 2

import re

my_lst = ['nbresets:0,totalsec:14,lossevtec:0,lossevt:0,sevlossec:0,sevloss:0,paclosevtec:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,paclosevt:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,dellosevtec:0:0:0:0:0:0:0:0:0:0:0,dellosevt:0:0:0:0:0:0:0:0:0:0:0,dursevlossec:0:0:0:0:0:0:0:0:0:0:0:0,dursevloss:0:0:0:0:0:0:0:0:0:0:0:0,nbfailures:0,notif:2']


print re.findall(pattern="totalsec:(d+)", string=my_lst[0])[0]

output:

Answered By: Mahesh Karia

Answer 3

Why are you using a list as container? Your list has only one entry (everything between ‘ ‘). And you can only use split on a string.
Just split the string into a list. Then iterate over the list and extract the key / value pairs by again splitting:

myString = 'nbresets:0,totalsec:14,lossevtec:0,lossevt:0,sevlossec:0,sevloss:0,paclosevtec:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,paclosevt:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0,dellosevtec:0:0:0:0:0:0:0:0:0:0:0,dellosevt:0:0:0:0:0:0:0:0:0:0:0,dursevlossec:0:0:0:0:0:0:0:0:0:0:0:0,dursevloss:0:0:0:0:0:0:0:0:0:0:0:0,nbfailures:0,notif:2'
result = {}
for item in myString.split(","):
    key, value = item.split(':', 1)
    result[key] = value

print(result['totalsec'])

Answered By: Frieder

Answer 4

You can try this also:-

for i in a:  #a is your list of data here
    gen = i.split(",")
    result = [x for x in gen if x.startswith('totalsec')] #which can be dynamic
    for st in result:
        name,value = st.split(":")
        print(value)

Answered By: Narendra

Extracting a determined value from a list

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