Python多重赋值技巧

1、多重赋值技巧是一种快捷方式,让你在一行代码中,用列表中的值为多个变量赋值。所以不必像这样:

entrepreneur = ['JackMa', 'PonyMa', 'LeiJun']
Alibaba = entrepreneur[0]
Tencent = entrepreneur[1]
Xiaomi = entrepreneur[2]

而可以这样:

entrepreneur = ['JackMa', 'PonyMa', 'LeiJun']
Alibaba, Tencent, Xiaomi = entrepreneur
print(Alibaba, Tencent, Xiaomi)

打印结果:

JackMa PonyMa LeiJun

2、变量的数目和列表的长度必须严格相等,否则 Python 将给出 ValueError:

entrepreneur = ['JackMa', 'PonyMa', 'LeiJun']
Alibaba, Tencent, Xiaomi, Baidu= entrepreneur

执行结果报错:

ValueError: not enough values to unpack (expected 4, got 3)

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