With python; Getting index of wrong item of list

I’m trying to get the indeces of the items of my list but on one item it returns a wrong index. There are two numbers who are the same in the list, maybe it confuses it with the first one.

browser
enumerate
go
indexing
maybe
xpath

The list is: [0,1,0,0,0,0,0,0,0,0,6,1,0]

for i in neu:

   if (i > 0):

      zahl = neu.index(i) + 7
      print(zahl)

      browser.find_element_by_xpath("//*[@id='tabelle_merkliste']/tbody/tr['zahl']/td[10]/img")

      print("found")

"print(Zahl)" returns these sums:
8
17
8 (should be 18)
Maybe someone got an idea why this happens, thanks in advance.

>Solution :

Use enumerate:

for i, value in enumerate(neu):
    if (value > 0):

      zahl = i + 7
      print(zahl)

      browser.find_element_by_xpath("//*[@id='tabelle_merkliste']/tbody/tr['zahl']/td[10]/img")

      print("found")