Python change index for value array

Question

In python I have the following array:

['75920-c1-u1 .pdf', '75920-c1-u2 .pdf', '75920-c1-u3 .pdf', '75920-c1-u4 .pdf', '75920-c1-u5 .pdf' , '75920-c1.pdf']

I would like to make the element: 75920-c1.pdf be on the index 0 and after it the rest should follow, so 75920-c1-u1 .pdf, 75920-c1-u2 .pdf etc…

I can’t even manage to do this…

Asked By: CoderCoder42

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Source

Answer 1

    ls = ['75920-c1-u1 .pdf', '75920-c1-u2 .pdf', '75920-c1-u3 .pdf', '75920-c1-u4 .pdf', '75920-c1-u5 .pdf' , '75920-c1.pdf']
    ls.sort(key=lambda s:(len(s),s))
    # ls = ['75920-c1.pdf', '75920-c1-u1 .pdf', '75920-c1-u2 .pdf', '75920-c1-u3 .pdf', '75920-c1-u4 .pdf', '75920-c1-u5 .pdf']

Answered By: Shiva_Adasule

Answer 2

You need to (simple, but not necessarily the solution for large lists) slice your list or write a sort function.

Slicing could be done by (I assume you called it "array" bc it is a np array?) list(NP_ARRAY)[-1]+list(NP_ARRAY)[:-1].

A list named "name" is sliced from a to b by name[a:b]. The – means count from the end.

A sort function should split the string after ‘75920-c1’ and sort from there.

Answered By: Arbor Chaos

Answer 3

just pop the value and insert it in the first index
here is the code

a= ['75920-c1-u1 .pdf', '75920-c1-u2 .pdf', '75920-c1-u3 .pdf', '75920-c1-u4 .pdf', '75920-c1-u5 .pdf' , '75920-c1.pdf']
p = a.pop()
a.insert(0,p)

Hope it helps 🙂

Answered By: Vivek Maddeshiya

Python change index for value array

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