elance checksum demo | Python Fiddle

from hashlib import sha1
__author__ = 'diraven'

# Define simple checksum function for string lists
def sha1_list(target):
    result = ''
    for item in target:
        result = result + item

return sha1(result).hexdigest()

# Define function that will do testing
def test(list1, list2):
    print 'list1: %s' % list1
    print 'list2: %s' % list2
    print 'list1 sha1: %s' % sha1_list(list1)
    print 'list2 sha1: %s' % sha1_list(list2)
    print 'list1 and list2 produce the same result: %s' % (sha1_list(list1) == sha1_list(list2))
    print ""

# Make new list
list1 = []

# Add few test strings
list1.append('test')
list1.append('test2')
list1.append('test3')
list1.append('test45')
list1.append('test68')

# Make another list
list2 = []

# Add same strings
list2.append('test')
list2.append('test2')
list2.append('test3')
list2.append('test45')
list2.append('test68')

# Calculate checksums for these two lists
test(list1, list2)

# Remove some elements from list2
del list2[2]
del list2[1]

# Calculate checksums for these two lists again
test(list1, list2)

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