variables in string.count

Peter Otten __peter__ at web.de
Fri Jun 4 08:54:23 CEST 2004


ntg85 wrote:

> Can you use variables in string.count or string.find? I tried, and
> IDLE gives me errors.
> Here's the code:

I assume you omitted

import string
list = ["a", "b", "c"]

> while list:
>     print
>     letter = raw_input("What letter? ")
>     string.lower(letter)

Strings are immutable, i. e. they cannot be modified. Therefore the above
should be:

      letter = string.lower(letter) 

or even better:

      letter = letter.lower()   

The string module is rarely needed these days as most functions are also
available as string methods.

>     guess = string.count(letter, list)

To check if a string (letter) is in a list, use the "in" operator:

      if letter in list:
          list.remove(letter)
      else:
          print "Try again!"

>     if guess == -1:
>         print "Try again!"
>     else:
>         list.remove(letter)
> the error is:
> TypeError: expected a character buffer object
> Thanks.

Note that list is also a Python builtin and should not be used as a variable
name to avoid confusing the reader. For a complete list of builtins type

dir(__builtins__)

in the interpreter.

Peter



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