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try:
from collections import OrderedDict
except ImportError:
print("SKIP")
raise SystemExit
x = OrderedDict()
y = OrderedDict()
x['a'] = 1
x['b'] = 2
y['a'] = 1
y['b'] = 2
print(x)
print(y)
print(x == y)
z = OrderedDict()
z['b'] = 2
z['a'] = 1
print(y)
print(z)
print(y == z)
del z['b']
z['b'] = 2
print(y)
print(z)
print(y == z)
del x['a']
del y['a']
print(x)
print(y)
print(x == y)
del z['b']
del y['b']
print(y)
print(z)
print(y == z)
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