4.1. Set 转换为 Dict: 注意:Set 中的元素必须是可哈希的,因此只能转换包含元组的集合。 my_set = {('a', 1), ('b', 2), ('c', 3)}set_to_dict = dict(my_set)print(set_to_dict) 4.2. Set 转换为 List 或 Tuple: 由于Set 是无序的,转换为 List 或 Tuple 时顺序不确定,可以通过排序使...
1.set() 语法:set([iterable]) 参数:可迭代对象(可选),a sequence (string, tuple, etc.) or collection (list, set, dictionary, etc.) or an iterator object to be converted into a set 返回值:set集合 作用:去重,因为set集合的本质是无序,不重复的集合。所以转变为set集合的过程就是去重的过程 1...
sample_set = {10, 20, 30, 40} my_list = sorted(sample_set) print(my_list) Output[10, 20, 30, 40] 5) Unpack set inside the parenthesisIn this method, you have to unpack the set inside the list literal, which is created due to the presence of the single comma(,). This ...
1.set() 语法:set([iterable]) 参数:可迭代对象(可选),a sequence (string, tuple, etc.) or collection (list, set, dictionary, etc.) or an iterator object to be converted into a set 返回值:set集合 作用:去重,因为set集合的本质是无序,不重复的集合。所以转变为set集合的过程就是去重的过程 1...
Help on built-in function sorted in module builtins:sorted(iterable, /, *, key=None, reverse=False) Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the reverse flag can be set to request...
Help on built-in function sorted in module builtins:sorted(iterable, /, *, key=None, reverse=False) Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the reverse flag can be set to request...
print list_after_sorted[i][0],list_after_sorted[i][1] def main(): dict_word = get_list_dict() sort_dict_get_ten(dict_word) if __name__ == '__main__': main() [('hello', 4), ('kitty', 3), ('he', 2), ('good', 1), ('hasd', 1), ('wangleai', 1), ('has...
reverse is a boolean value. If set to True, then the list elements are sorted as if each comparison were reversed.In general, the key and reverse conversion processes are much faster than specifying an equivalent cmp function. This is because cmp is called multiple times for each list ...
集合(set) # listnumbers=[3,1,4,1,5,9]sorted_numbers=sorted(numbers)print(sorted_numbers)# 输出: [1, 1, 3, 4, 5, 9] key 函数,用来提取待排序元素的关键字(排序依据) 常见key函数: len(按长度排序) str.lower(忽略大小写排序)
不管是 list.sort 方法还是 sorted 函数,都有两个可选的关键字参数: key: 接收一个只有一个参数的函数,这个函数会被用在序列里的每一个元素上,所产生的结果将是排序算法依赖的对比关键字。 比如说,在对一些字符串排序时,可以用 key=str.lower 来实现忽略大小写的排序,或者是用 key=len 进行基于字符串长度的...