mirror of https://github.com/python/cpython
45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
|
"""Various utility functions."""
|
||
|
|
|
||
|
|
def strclass(cls):
|
||
|
|
return "%s.%s" % (cls.__module__, cls.__name__)
|
||
|
|
|
||
|
|
def sorted_list_difference(expected, actual):
|
||
|
|
"""Finds elements in only one or the other of two, sorted input lists.
|
||
|
|
|
||
|
|
Returns a two-element tuple of lists. The first list contains those
|
||
|
|
elements in the "expected" list but not in the "actual" list, and the
|
||
|
|
second contains those elements in the "actual" list but not in the
|
||
|
|
"expected" list. Duplicate elements in either input list are ignored.
|
||
|
|
"""
|
||
|
|
i = j = 0
|
||
|
|
missing = []
|
||
|
|
unexpected = []
|
||
|
|
while True:
|
||
|
|
try:
|
||
|
|
e = expected[i]
|
||
|
|
a = actual[j]
|
||
|
|
if e < a:
|
||
|
|
missing.append(e)
|
||
|
|
i += 1
|
||
|
|
while expected[i] == e:
|
||
|
|
i += 1
|
||
|
|
elif e > a:
|
||
|
|
unexpected.append(a)
|
||
|
|
j += 1
|
||
|
|
while actual[j] == a:
|
||
|
|
j += 1
|
||
|
|
else:
|
||
|
|
i += 1
|
||
|
|
try:
|
||
|
|
while expected[i] == e:
|
||
|
|
i += 1
|
||
|
|
finally:
|
||
|
|
j += 1
|
||
|
|
while actual[j] == a:
|
||
|
|
j += 1
|
||
|
|
except IndexError:
|
||
|
|
missing.extend(expected[i:])
|
||
|
|
unexpected.extend(actual[j:])
|
||
|
|
break
|
||
|
|
return missing, unexpected
|