CODEWITHSUNDEEP
pythonreplacestrip
Johnny
Johnny

Reputation: 181

How do I strip combination of numbers and period in string in python?

I have a column with strings that look like below. They are combination of IP Address and system name. I want to strip the IP address part of the string, which is everything before the first hyphen. 

str = "12.345.678.9-abcd1_0-def-ghi-4567"

So far, I've tried below,

str.replace('\D+', '') 
str.lstrip('\D+', '')
str.rstrip('\D+', '')

'I want to delete everything until the first hyphen.' This sounds like a simple task but I'm experiencing a learning curve. Please help!

Upvotes: 1

Views: 922

Answers (4)

Vaishali
Vaishali

Reputation: 38415

Try this: import re m = re.search('\d+-(.*)', s).group(1)

You get 'abcd1_0-def-ghi-4567'

Upvotes: 0

DYZ
DYZ

Reputation: 57033

A regex-based solution to the collection:

re.findall(r'[^-]+-(.+)',s)[0]
#'abcd1_0-def-ghi-4567'

Upvotes: 0

Dan
Dan

Reputation: 577

You can find() the first '-' and then take a slice from that point on:

>>> s = '12.345.678.9-abcd1_0-def-ghi-4567'
>>> s[s.find('-')+1:]
'abcd1_0-def-ghi-4567'

Upvotes: 0

Zach Ward
Zach Ward

Reputation: 127

If all your strings are formatted in that same way, you could just split the string on the hyphen using the str.split() method, remove the first item of the resulting list, and then use the str.join() method to combine it again like so:

string = "12.345.678.9-abcd1_0-def-ghi-4567".split("-")[1:]
>>> ['abcd1_0', 'def', 'ghi', '4567']
joined_str = "-".join(string)
>>> abcd1_0-def-ghi-4567

Upvotes: 1

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