can i insert of my list with List Comprehensions

Question

I want to make an insert on the List Comprehensions. I can do it?

t = ['test','tes']
x = ['1','2','3','4','5']
t.insert([0,i]for i in x)

What exactly are you trying to achieve? What's the expected output? — Mureinik, Jul 27 '17 at 16:14
t = t + x see as this was already answered https://stackoverflow.com/questions/1720421/how-to-append-list-to-second-list-concatenate-lists — ttallierchio, Jul 27 '17 at 16:18
Insert an item at a given position. The first argument is the index of the element before which to insert, so `a.insert(0, x)` inserts at the front of the list, and `a.insert(len(a), x)` is equivalent to `a.append(x)`. — Avihoo Mamka, Jul 27 '17 at 16:21

score 1 · Answer 1 · answered Jul 27 '17 at 16:21

1

If the result you're looking for is something like this

['test', 'tes', [0, 'test'], [0, 'tes']]

The code is below:

t = ['test','tes']
x = ['1','2','3','4','5']
t.extend([[0,i]for i in t])

print t

answered Jul 27 '17 at 16:21

XPLOT1ON

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thank but I want to keep the elements as strings in the list – Konstantinos Spanos Jul 27 '17 at 16:24
can you post your expected output? So I know exactly what you're trying to achieve – XPLOT1ON Jul 27 '17 at 16:26

score 1 · Answer 2 · answered Jul 27 '17 at 16:39

1

You can do it in a list comprehension but it ends up doing extra work. Just do it in a for loop:

for thing in x:
    t.insert(0, thing)

answered Jul 27 '17 at 16:39

wwii

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score 0 · Answer 3 · answered Jul 27 '17 at 16:24

0

t = ['test','tes']
x = ['1','2','3','4','5']
out = t + x

your out put will be ['tes','test','1','2','3','4','5','6'] or something alone those lines. python allows you to concatenate strings

answered Jul 27 '17 at 16:24

ttallierchio

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score 0 · Answer 4 · answered Jul 27 '17 at 16:32

The ListItemLabel accepts only strings. I want to give it more than one element in a list, I use in ListItemLabel front str, but it does not do anything.

I do not know if it's the way you think

Python:

result_true = ListProperty([])

extra = self.viewedit.adapter.data 

for edit in extra: 
   if edit['active'] == True:

    app.result_true.append(edit['text'])
    #app.result_true = (edit['text'])
    print app.result_true

Kivy:

ListItemLabel:
text:str(ctx.edit)

Return:

['\xce\xbb\xce\xb9\xce\xb1\xcf\x83\xcf\x84\xce\xae \xce\xbd\xcf\x84\xce\xbf\xce\xbc\xce\xac\xcf\x84\xce\xb1', '\xcf\x83\xce\xbf\xcf\x85\xcf\x83\xce\xac\xce\xbc\xce\xb9', '\xcf\x84\xcf\x85\xcf\x81\xce\xaf']

can i insert of my list with List Comprehensions

4 Answers4