php三元表达式:[Python 学习笔记] 3: 3元表达式?
方式1 s = "" a = s or "not none" a'not none' s = None a = s or "not none" a'not none' s = "aa" a = s or "not none" a'aa' 方式2 s = None a = "not null" s None s a'not null' s = "aa" a = "not null" s ... [阅读全文]
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