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Thu Nov 27 05:16:40 EST 2003 · https://mail.python.org/pipermail/python-dev/2003-November/040458.html

Hi !

A.)

The string object have a method named "index", and have a method named
"find".
It is good, because many times we need to find anything, and it is
very long to write this:

try:
   i=s.index('a')
except:
   i=-1
if i<>-1: pass

and not this:

if (s.find('a')<>-1): pass

Why don't exists same method in the list object ?

It is very ugly thing (sorry, but I must say that).

I must write in every times:

l=[1,2,3,4]
try:
   i=l.index(5)
except:
   i=-1
if i<>-1: pass

and not this:
if (l.find(5)<>-1): pass

B.)

Same thing is the deleting.

I think, this method is missing from strings, and lists.

Example:

I must write this:

s='abcdef'
l=[1,2,5,3,4,5]

print s
s=s[:2]+s[3:]
print s

print l
l[2]=None
l.remove(None)
print l

and not this:
s='abcdef'
l=[1,2,5,3,4,5]
s=s.delete(2)
l.delete(2)

and delete more:
s.delete()  # s=''
l.delete()  # l=[]
s.delete(2,2) # s='abef'
l.delete(2,2) #  l=[1,2,4,5]

So: some functions/methods are neeeded to Python-like programming
(less write, more effectivity).

KK

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[Python-Dev] list and string - method wishlist