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Python Python Basics (2015) Python Data Types Index

Posted by ryan smith
ryan smith
687 Points

Why doesn't alpha.index('cd') give the value of 2 AND 3

At 2:30

alpha = 'abcdef' alpha.index('cd')

You get the value of 2. Why doesn't it give the value of 2 and 3 especially since he stated you could do index with groups, but it only states one value?

What if I want both occurrences (if it's just giving me the first occurrence). Why does it even give the first one and not both, is there a important disguised reason?

1 Answer

Sumit Roy
Sumit Roy
2,905 Points
Sumit Roy
Sumit Roy
2,905 Points

here index is returning the first occurrence of the substring 'cd' in the string 'abcde'

ryan smith
ryan smith
687 Points

Thanks. What if i want both occurences?

Sumit Roy
Sumit Roy
2,905 Points

You are asking for the occurence of substring 'cd' and there is only one occurence of that. If you want index of both 'c' and 'd' you have to do two index call. 'abcd'.index('c') and 'abcd'.index('d')