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def deep_union(a, b): | |
if not isinstance(a, dict): | |
TypeError("a is not dict") | |
if not isinstance(b, dict): | |
TypeError("b is not dict") | |
if a == b: | |
return a | |
if len(a.keys()) < len(a.keys()): | |
a, b = b, a | |
for key in b.keys(): | |
if key in a.keys(): | |
a[key] = deep_union(a[key], b[key]) | |
else: | |
a[key] = b[key] | |
return a | |
if __name__=="__main__": | |
d1 = {'a': 1, 'b':{'aa': 11, 'bb': 23}} | |
d2 = {'z': 9, 'b':{'cc': 22, 'dd': 343, 'yyy': {'ddd': 324}}, 'c': 2} | |
# test1 | |
d1 = deep_union(d1, d2) | |
print(d1) | |
# test2 | |
d1 = d1 | d2 | |
d1 = deep_union(d1, d2) | |
print(d1) |
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