CODEWITHSUNDEEP
pythonstringpython-3.x
Denys
Denys

Reputation: 4557

Replace value after Nth delimiter

Original string looks like this:

a,b,c,d,e

How can I replace the comma separated value that comes after the Nth comma?

So for example how can i replace the value that comes after 3rd comma with x to create a following string?

a,b,c,x,e

Upvotes: 0

Views: 241

Answers (4)

alec_djinn
alec_djinn

Reputation: 10819

The code I am posting here should be self-explanatory, if not, feel free to ask for explanations with a comment.

s = 'a,b,c,d,e'
n = 3
to_replace_with = 'x'

l = s.split(',')
l[n] = to_replace_with
result = ','.join(l)

>>>print(result)
'a,b,c,x,e'

Upvotes: 0

Krzysztof Krasoń
Krzysztof Krasoń

Reputation: 27516

It depends how you want to do it, there are several ways, e.g.:

using split

list = "a,b,c,d,e".split(",")
list[3] = "x"
print ",".join(list)

using regex

import re
print re.sub(r"^((?:[^,]+,){3})([^,]+)(.*)$", "\\1x\\3", "a,b,c,d,e")

in the regexp example, {3} is how many entries to skip

Upvotes: 1

Anmol Singh Jaggi
Anmol Singh Jaggi

Reputation: 8576

mystr = 'a,b,c,d,e'

mystr = mystr.split(',')
mystr[3] = 'x'
mystr = ','.join(mystr)

print mystr

Upvotes: 1

nanithehaddock
nanithehaddock

Reputation: 257

Yes It is possible

def replaceNthComma(data, indexOfComma, newVal): _list = list(data) _list[indexOfComma*2] = newVal return ''.join(_list)

Which will return the exact ouput as you expect.

ouput: replaceNthComma("a,b,c,x,e", 3, 'x') ==> 'a,b,c,x,e'

Upvotes: 0

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