nodeLists = [dom.xpath('//exercises//problem-set/entry | //exercises//multi-part/entry') for dom in doms]
assert len(nodeLists[0]) == len(nodeLists[1])
for tagName in ['solution','correct']:
for nodeIndex in range(len(nodeLists[0])):
entries = [nodeList[nodeIndex] for nodeList in nodeLists]
solutions = [entry.find(tagName) for entry in entries]
solutionStrings = []
for solution in solutions:
if solution is None:
solutionStrings.append('')
else:
solutionStrings.append(strip_namespaces(etree.tostring(solution, with_tail=False)))
if solutionStrings[0] != solutionStrings[1]:
blocks = StringMatcher.matching_blocks(StringMatcher.editops(solutionStrings[0], solutionStrings[1]), solutionStrings[0], solutionStrings[1])
if sum([block[2] for block in blocks])/max(len(solutionStrings[0]), len(solutionStrings[1])) < 0.1:
blocks = []
for i, col in [(0,'old'), (1,'new')]:
pos = 0
output = ''
for block in blocks:
if block[i] > pos:
output += termColors[col] + solutionStrings[i][pos:block[i]] + termColors['reset']
output += solutionStrings[i][block[i]:block[i]+block[2]]
pos = block[i]+block[2]
if pos < len(solutionStrings[i]):
output += termColors[col] + solutionStrings[i][pos:] + termColors['reset']
print '===', col.upper(), '===================================================='
print output
print '============================================================'
