Python 检查集合中是否存在项目
检查集合中是否存在项目
要确定指定项目是否出现在集合中，请使用 in 关键字
示例
检查 "apple" 是否出现在集合中
thisset = {"apple", "banana", "cherry"}
if "apple" in thisset
print("Yes, 'apple' is in this set")
自己试试 »
要确定指定项目是否出现在集合中，请使用 in 关键字
检查 "apple" 是否出现在集合中
thisset = {"apple", "banana", "cherry"}
if "apple" in thisset
print("Yes, 'apple' is in this set")
自己试试 »
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