How to extract 4 characters after '-' in a hostname

Question

I have hostname of format xxxxxxxx-abcdxxxxx the x is not a set number so can't use print text[10:14] because I don't have a set location, the only pattern is 4 chars after -.

Split on dash, get the first 4 chars of the second split – OneCricketeer Dec 15 '15 at 02:04 — OneCricketeer, Dec 15 '15 at 02:04

Patrick Yu · Accepted Answer · 2015-12-15T16:42:48.607

6

Assuming your first string is

s = "xxxxxxxx-abcdxxxxxxxxx"

you just do:

s.split("-",1)[1][:4]

which splits s into two strings in an array, ['xxxxxxxx','abcdxxxxxxxxx'] and you get the result by taking the splicing of the 2nd array from index 0 to 4.

abcd

edited Dec 15 '15 at 16:42

answered Dec 15 '15 at 02:06

Patrick Yu

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thx have to wait 8 mins to accept your answer. text.split("-")[1][0:4] – Victor Dec 15 '15 at 02:08
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I think OP wanted abcd, not the other chars – OneCricketeer Dec 15 '15 at 02:09
Your `[4:]` is going to return the `ssometiff` portion after the `abcd` – m_callens Dec 15 '15 at 02:09
Yeah, true. Going to fix... – Patrick Yu Dec 15 '15 at 02:11
How do i check if it isalpha on the result string ? – Victor Dec 15 '15 at 02:13
@Victor I updated my answer for `isalpha` – m_callens Dec 15 '15 at 02:15
@m_callens thanks +1 – Victor Dec 15 '15 at 02:17

m_callens · Answer 2 · 2015-12-15T02:16:00.507

5

Option 1

Get the index of the dash and select from +1 to +5:

a = 'xxxxxxx-abcdxxxxxxx'
i = a.index('-')
print(i[i+1:i+5])

Option 2

Use the split function and then get the first 4 values of the second element.

a = 'xxxxxxx-abcdxxxxxx'
print(a.split('-')[1][:4])

To see if a string is alphabetic, simply call the isalpha function:

str.isalpha()

It will return true or false based on result.

edited Dec 15 '15 at 02:16

answered Dec 15 '15 at 02:07

m_callens

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How to extract 4 characters after '-' in a hostname

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