python序列中是否包含某个元素

http://outofmemory.cn/code-snippet/9098/python-list-contains-with-in-not-in theList = ['a','b','c'] if 'a' in theList: print 'a in the list' if 'd' not in theList: print 'd is not in the list'…

python中如何判断list中是否包含某个元素

在python中可以通过in和not in关键字来判读一个list中是否包含一个元素 pythontab = ['p','y','t','h','o','n','t','a','b'] if 't' in pythontab: print 't in pythontab' if 'w' not in theList: print 'w is not in pythontab'…

在python中可以通过in和not in关键字来判读一个list中是否包含一个元素 theList = ['a','b','c'] if 'a' in theList: print 'a in the list' else: print 'a is not in the list' if 'd' not in theList: print 'd is not in the list' else: print 'd in the list'…

Python 中如何判断 list 中是否包含某个元素

在python中判断 list 中是否包含某个元素: ——可以通过in和not in关键字来判读例如: abcList=['a','b','c',1,2,3] if 'a' in abcList: print('a is in abcList') if 'd' not in abcList: print('d is not in abcList') if 1 in abcList: print('1 is in abcList') 结果为:…

python判断list中是否包含某个元素

python判断list中是否包含某个元素 theList = ['a','b','c'] if 'a' in theList: print 'a in the list' if 'd' not in theList: print 'd is not in the list'…

如何判断list中是否包含某个元素

在python中可以通过in和not in关键字来判读一个list中是否包含一个元素: str = ['s','i','m','o','n'] if 'e' in str: print("e in str") else: print('e not in str') 输出:e not in str if 's' in str : print('s in str') 输出:s in str in 和 not in 是非常常用的关键字.…

JS 验证数组中是否包含重复元素

验证JS中是否包含重复元素,有重复返回true:否则返回false 方案一. function isRepeat(data) { var hash = {}; for (var i in data) { if (hash[data[i]]) { return true; } // 不存在该元素,则赋值为true,可以赋任意值,相应的修改if判断条件即可 hash[data[i]] = true; } return false; } 方案二. function isRepeat(arrs) { i…