CODEWITHSUNDEEP
pythonpython-3.x
Carl Lind
Carl Lind

Reputation: 43

Trying to make 2 following elements of a list into a seperate list

This is my current code and the output is 

['50003252714', 'Malle Kask', 
'40003252714', 'Endel Kask', 
'30003252714', 'Peeter Kask', 
'60003252714', 'JĆ¼ri MƤnd', 
'70003252714', 'Laura MƤnd', 
'80003252714', 'Kerli MƤnd', 
'10003252714', 'Elvo Pikk', 
'20003252714', 'Signal Pikk']

What I want to do is make a new list inside the original list with 2 following elements. An example of what I want as an end result is 

[["50003252714","Malle Kask"],
["40003252714","Endel Kask"],
[...]]

I tried using for and while loops inside each other but it got really messy and I didn't get my desired result.

nimedFail = open("nimed.txt")
lapsedFail = open("lapsed.txt")

def seosta_lapsed_ja_vanemad(lapsed,nimed):
    nimed = []
    lapsed = []
    eraldatud_nimed_töötlemata = []
    eraldatud_nimed = []
    eraldatud_nimed_listides = []

    for rida in nimedFail:
        nimed.append(rida.strip())
    for rida in lapsedFail:
        lapsed.append(rida.strip())
    for ele in nimed:
        eraldatud_nimed_töötlemata.append(ele.split(" "))
    for ele in eraldatud_nimed_töötlemata:
        x = " ".join(ele[1:3])
        eraldatud_nimed.append(ele[0])
        eraldatud_nimed.append(x)


    return eraldatud_nimed


print(seosta_lapsed_ja_vanemad("nimed.txt","lapsed.txt"))

Upvotes: 2

Views: 89

Answers (3)

Ron Marcelino
Ron Marcelino

Reputation: 533

I really don't understand the variable names but I'll try to code it.

def seosta_lapsed_ja_vanemad(lapsed,nimed):
    with open(lapsed, 'r') as lapsed_file_handler:
        lapsed_content = lapsed_file_handler.readlines()
    with open(nimed, 'r') as nimed_file_handler:
        nimed_content = nimed_file_handler.readlines()

Assuming both files are equal in line numbers, you may just loop through them:

    return [[lapsed_content[i], nimed_content[i]] for i in range(0, len(lapsed_content))]

I suggest you use tuple or dictionary instead of nested list.

Upvotes: 0

Jan Pansky
Jan Pansky

Reputation: 154

There is my way of doing this:

list = ['50003252714', 'Malle Kask',
'40003252714', 'Endel Kask',
'30003252714', 'Peeter Kask',
'60003252714', 'JĆ¼ri MƤnd',
'70003252714', 'Laura MƤnd',
'80003252714', 'Kerli MƤnd',
'10003252714', 'Elvo Pikk',
'20003252714', 'Signar Pikk']

Convert the list using iter() and then within the loop use next() iterator:

it = iter(a)
final = []
for a in it:
    list_of_two = [a, next(it)]
    final.append(list_of_two)
print(final)

Output:

[['50003252714', 'Malle Kask'], ['40003252714', 'Endel Kask'], ['30003252714', 'Peeter Kask'], ['60003252714', 'JĆ¼ri MƤnd'], ['70003252714', 'Laura MƤnd'], ['80003252714', 'Kerli MƤnd'], ['10003252714', 'Elvo Pikk'], ['20003252714', 'Signar Pikk']]

Upvotes: 1

FObersteiner
FObersteiner

Reputation: 25604

you can likely create the combined list / list of lists already when reading the files, something along the lines of

with open("nimed.txt", 'r') as nimedFail, open("lapsed.txt", 'r') as lapsedFail:
    l_out = [[a.strip(), b.strip()] for a, b in zip(nimedFail, lapsedFail) if a.strip() and b.strip()]

Upvotes: 1

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