CODEWITHSUNDEEP
pythonpython-2.7
aste123
aste123

Reputation: 1242

What is the last position of a string in python?

Is it true that the last position of a string in python comes after the last character of that string? If it is true does it mean if k='asdf' then at index position 4 there is a ''? If so, why doesn't k[4] return '' instead of out of range error. It has been suggested to me to try k[4:4] to see this behavior but I think the slice returns a '' because it hasn't been given anything to contain and not specifically because of presence of a '' at the end of every string. If I do k[300:782], I still get '' but `find('asdf','',300)' returns -1 so this should confirm my beliefs.

Upvotes: 2

Views: 1480

Answers (2)

M. K. Hunter
M. K. Hunter

Reputation: 1828

Kyle does a great job of answering. I will only add that you can reference the last position of a string with the index -1. so in your example k[-1] produces 'f' just as k[3] produces 'f'.

Upvotes: 1

Kyle Neary
Kyle Neary

Reputation: 899

That is not true. The last position in k='asdf' is k[3] with is 'f'.

You are also correct that when trying to examine a slice that doesn't contain anything (k[4:4] or k[300:2345] or k[6:5]) python will give you an empty result.

'' is an empty string; it is not returning a quotation mark.

@BrenBarn is absolutely right about find

Upvotes: 4

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