Python: How to get the Index of a string

Question

How can I write a function that returns the index of a single character in a string without using the index method a.k.a string.index('some random character')?

jhocking -- its specified in the instructions of my hw set not use that method Mr E -- thank you for the link, unfortunately its all greek to me =/ — Jay
– Jay, Commented Apr 2, 2011 at 0:29
Thank you everybody, the answers you all gave are all valid Once again, Thank you very much! — Jay
– Jay, Commented Apr 2, 2011 at 0:36
Mr E gave you the link because you wrote "function that returns the index of a string" whereas you meant "function that returns the index of a char". The first is a much more comple problem. — frnhr
– frnhr, Commented Apr 2, 2011 at 1:01

lecodesportif · Accepted Answer · 2011-04-02 00:31:42Z

3

Another variant that works with multiple occurrences of char in string.

def idx(string, char):
  for key, x in enumerate(string):
    if x == char:
      print key

answered Apr 2, 2011 at 0:31

lecodesportif

11.1k9 gold badges41 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

frnhr · Accepted Answer · 2011-04-02 00:27:26Z

0

it's a school task?

def ind(the_string, the_char):
   i = 0
   for a_char in the_string:
       if a_char == the_char: return i
       i += 1
   return -1

answered Apr 2, 2011 at 0:27

frnhr

13k9 gold badges70 silver badges96 bronze badges

2 Comments

Jay Over a year ago

yes its for a hw set, and thank you very much Cek this did the trick!

frnhr Over a year ago

the enumerate from lecodesportif's answer saves you the two lines of code, and it's nice for i, a_char in enumerate(the_string)

jhocking · Accepted Answer · 2011-04-02 00:26:41Z

0

index() is the same thing as find() except for the error when the string isn't found.

answered Apr 2, 2011 at 0:26

jhocking

5,5871 gold badge27 silver badges39 bronze badges

Collectives™ on Stack Overflow

Python: How to get the Index of a string

3 Answers 3

Comments

2 Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

2 Comments

Comments

Related