importnumpyasnp keys_array=np.array(keys_list)print(keys_array)# 输出:['name' 'age' 'city'] 1. 2. 3. 4. 将dict_keys 转换为其他数据结构 除了列表和 NumPy 数组,您可能会希望将字典的键转换为其他数据结构,如集合。这也是十分简单的: keys_set=set(keys_view)print(keys_set)# 输出:{'age'...
# 将键转换为数组key_array=list(keys) 1. 2. 这里我们使用list()方法将keys转换为数组,并将结果存储在key_array变量中。 完整代码示例 下面是将字典的键转换为数组的完整代码示例: # 创建一个字典my_dict={'name':'Alice','age':25,'city':'New York'}# 获取字典的所有键keys=my_dict.keys()# 将...
def arrays_to_dict(keys, values, fillvalue=None): if len(keys) != len(values): return dict(itertools.zip_longest(keys, values, fillvalue=fillvalue)) else: return dict(zip(keys, values)) keys = ['a', 'b', 'c'] values = [1, 2] result = arrays_to_dict(keys, values, fillval...
You will learn about each approach here one by one to convert a dictionary into a list (or array). Converting Python Dict to Array using List Comprehension List comprehension is a way to create a new list from the existing one, but here, you will use this technique to convert the diction...
* or points to an array of PyObject* for a split table */ typedefstruct{ PyObject_HEAD Py_ssize_t ma_used; PyDictKeysObject *ma_keys; PyObject **ma_values; } PyDictObject; struct_dictkeysobject{ Py_ssize_t dk_refcnt; Py_ssize_t dk_size; ...
values = np.array(['Alice', 25, 'Female']) dictionary = dict(zip(keys, values)) print(dictionary) 在这个示例中,我们使用numpy库创建keys和values数组,并使用zip函数将其转换成字典,最终生成的字典与使用zip函数的方法相同。这种方法适用于需要进行大规模数值计算的场景。
/* The ma_values pointer is NULL for a combined table * or points to an array of PyObject* for a split table */ typedef struct { PyObject_HEAD Py_ssize_t ma_used; PyDictKeysObject *ma_keys; PyObject **ma_values; } PyDictObject; struct _dictkeysobject { Py_ssize_t dk_refcnt;...
Type: <class 'dict'> ndarray: [[ 1. 0. 0. 2.] [ 3. 1. 0. -1.] [ 4. 1. 5. -1.] [ 3. -1. -1. -1.]] Type: <class 'numpy.ndarray'> Explanation: In the above code - udict is a string containing a nested dictionary, where the keys of the outer dictionary are ...
PyObject是python中所有类型对象的基础,这里不多做介绍,重点跟一下PyDictKeysObject的定义。 [Objects/dict-common.h]struct_dictkeysobject { Py_ssize_t dk_refcnt;/* Size of the hash table (dk_indices). It must be a power of 2. */Py_ssize_t dk_size;/* Function to lookup in the hash ta...
my_dict = {'a': [1, 2, 3], 'b': [4, 5, 6], 'c': [7, 8, 9]} my_tuple = tuple((key, tuple(value)) for key, value in zip(my_dict.keys(), my_dict.values())) print(my_tuple) 输出结果为: 代码语言:txt 复制 ...