我有两条字:
a = { a : 1, b : 2, c : 3}
b = { a : 2, d : 4, c : 5}
我也希望:
{ a : 2, b : 2, c : 5}
页: 1 页: 1
{ a : 2, b : 2, c : 5, d : 4}
如何利用最简单和最快的方式将钥匙排除在<代码>b之外。
我正在使用3.7 p。
我有两条字:
a = { a : 1, b : 2, c : 3}
b = { a : 2, d : 4, c : 5}
我也希望:
{ a : 2, b : 2, c : 5}
页: 1 页: 1
{ a : 2, b : 2, c : 5, d : 4}
如何利用最简单和最快的方式将钥匙排除在<代码>b之外。
我正在使用3.7 p。
首先,为了不增加任何新内容,你必须过滤第二个<编码>的<>条/代码>的内容。 我谈两种可能的解决办法:
a = { a : 1, b : 2, c : 3}
b = { a : 2, d : 4, c : 5}
for k,v in b.items():
if (k in a.keys()):
a[k] = v
print(a)
a = { a : 1, b : 2, c : 3}
b = { a : 2, d : 4, c : 5}
a.update([(k,v) for k, v in b.items() if k in a.keys()])
print(a)
Output for both:
{ a : 2, b : 2, c : 5}
我认为,理解足够容易:
{ i : (b[i] if i in b else a[i]) for i in a }
引证:
a = { a : 1, b : 2, c : 3}
b = { a : 2, d : 4, c : 5}
result = {}
# Iterate over keys in dictionary a
for key, value in a.items():
# If key exists in dictionary b, choose the maximum value
if key in b:
result[key] = max(value, b[key])
else:
result[key] = value
print(result)
还应当努力:
result = {key: max(a.get(key, 0), b.get(key, 0)) for key in a}
print(result)
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