Pythonchallenge Level 7 (python2.7)

In my opinion, this challenge needs more patience and observation!

>>> import Image
>>> image=Image.open('/homeDownloads/oxygen.png')
>>> data=image.convert('L').getdata()
>>> str=''
>>> s_data=[]
>>> for i in range(19918,39836): # 2/3 of the image
s_data.append(data[i])

>>> for t in s_data:
str=str+chr(t)



#find something unusual
#pick these stuff out
>>> import re
>>> s_str=re.search('s{5}.+/b',str)
>>> str=s_str.group()
>>> c='s'
>>> for ch in range(5,len(str),7):
c=c+str[ch]

>>> hint=[105, 110, 116, 101, 103, 114, 105, 116, 121]
>>> m=''
>>> for ch in hint:
m=m+chr(ch)

the final answer is ''integrity''