sorting list?

[nicstel]

I'm trying to find a way to sort a list..

list =  ["B1", "B2", "B10", "C1", "C2", "VB1", "VB2", "VB15"]
list.sort()

list.sort() give me: ['B1', 'B10', 'B2', 'C1', 'C2', 'VB1', 'VB15', 'VB2']
I want this: ['B1', 'B2', 'B10', 'C1', 'C2', 'VB1', 'VB2', 'VB15']

Do I need to use sting.split or something like that?

Thank You

[bvdet]

You should not use "list" as an identifier. The built-in function list() will be masked and inaccessible until the object is deleted.

You will have to pass a function to sort() sort your list in that manner. This is overkill for your example, but I use it for sorting material piecemarks:

import re

def sortMk(a, b):
    # Sort piece marks
    # Example mark list: [BP1, BP33, BP2, a123, a2, 901T1, p1002, p12, p456, w77, w211]
    # Sorted: ['901T1', 'BP1', 'BP2', 'BP33', 'a2', 'a123', 'p12', 'p456', 'p1002', 'w77', 'w211']
    
    pattA = re.compile('(^[a-z,A-Z]+)')
    pattD = re.compile('(\d+)')
    pattE = re.compile('(\d+$|\d+[a-zA-Z]+$)')
    pattP = re.compile('([a-zA-Z]+)')
    
    try:
        x = cmp(pattA.search(a).group(1), pattA.search(b).group(1))
    except:
        try:
            x = cmp(int(pattD.match(a).group(1)), int(pattD.match(b).group(1)))
        except:
            return cmp(a, b)
        if not x:
            try:
                x = cmp(pattP.search(a).group(1), pattP.search(b).group(1))
            except:
                return cmp(a, b)
        if not x:
            try:
                return cmp(int(pattE.search(a).group(1)), int(pattE.search(b).group(1)))
            except:
                try:
                    return cmp(pattE.search(a).group(1), pattE.search(b).group(1))
                except:
                    return cmp(a, b)
    if not x:
        try:
            return cmp(int(pattD.search(a).group(1)), int(pattD.search(b).group(1)))
        except:
            return cmp(a, b)
    return x

mylist =  mylist =  ['B1', 'B10', 'B2', 'C1', 'C2', 'VB1', 'VB15', 'VB2', 'DEFG4775', 'DEFG12']
mylist.sort(sortMk)
print mylist

The output:

>>> ['B1', 'B2', 'B10', 'C1', 'C2', 'DEFG12', 'DEFG4775', 'VB1', 'VB2', 'VB15']
>>>

[bvdet]

This stripped down version should work for you:

import re
def sortMk(a, b):
    pattA = re.compile('(^[a-z,A-Z]+)([0-9]+$)')
    m1= pattA.search(a)
    a1 = m1.group(1), int(m1.group(2))
    m2= pattA.search(b)
    b1 = m2.group(1), int(m2.group(2))
    return cmp(a1, b1)

[nicstel]

It works perfectly !! it's more complicated as I thought, but I like it.

Thanks BV