CODEWITHSUNDEEP
python-3.xsubstring
Rahul Agarwal
Rahul Agarwal

Reputation: 4110

Search for multiple keywords and corresponding index

I have strings like:

a = "currency is like gbp"

a= "currency blah blah euro"

a= "currency is equivalent to usd" .....

I want to substring or slice the above string wherever I found any of "gbp" , "euro" or "usd".

Not Working:

i = a.find("gbp") or a.find("euro") or a.find("usd")
a = a[i:]

Can do:

x = a.find('gbp')
y = a.find('euro')
z = a.find('usd')

But then I need to check which of them is greater than -1 and use that variable to slice the string which will be too much code.

Also, in my original example I have 10+ currencies so want a scalable solution.

Summary:

Want to slice/substring the main sentence from any of the words found till the end

Upvotes: 1

Views: 370

Answers (2)

Austin
Austin

Reputation: 26057

Use regex for such purposes:

import re

a = "currency is like gbp currency"
print(re.findall(r'((?:gbp|euro|usd).*)', a))

# ['gbp currency']

Upvotes: 1

Andrew McDowell
Andrew McDowell

Reputation: 2980

You could try something like:

currency_array = ['gbp', 'euro', 'usd']

index = max(a.find(currency) for currency in currency_array)

print(a[index:])

Upvotes: 1

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