if get_values_if_any(d1, somekey): if has_key_with_some_values(d1, somekey): However, get_values_if_any is generally handier. For example, you can use it to check if 'freep' is among the values for somekey: if 'freep' in get_values_if_any(d1, somekey): This extra handi...
values with a single key in a dictionary. for example, you might use a tuple as a key to represent the coordinates of a point on a grid, where the values associated with that key could be various properties or attributes related to that point. how can i check if an element exists in...
Introduction: Ubelt is a lightweight library of robust, tested, documented, and simple functions that extend the Python standard library. It has a flat API that all behaves similarly on Windows, Mac, and Linux (up to some small unavoidable differences). Almost every function inubeltwas written...
Oxford concise dictionary of literary terms This dictionary provides succinct and often witty explanations of over 1000 potentially troublesome terms encountered in the study of literature, from absu... C Baldick - 上海外语教育出版社 被引量: 742发表: 2000年 ...
The chembl_id values in molecule_dictionary were added to the connected data (activities, assays, and docs) using molregno (Table 1, Step 3). Compound properties, such as molecular weight (MW) and formula, were collected to identify compounds with the same experimental values. These ...
# viewvalues() # viewitems() # 作用如同Python3.x中的 # Dictionary # view # objects # 计算 # len(info) # 键值对的个数 # 判定 # x in dic # 判定dic中的key, 是否存在x # x not in dic # 判定dic中的key, 是否不存在x # dic.has_key(key) ...
A label consistent K-SVD (LC-KSVD) algorithm to learn a discriminative dictionary for sparse coding is presented. In addition to using class labels of training data, we also associate label information with each dictionary item (columns of the dictionary matrix) to enforce discriminability in spars...
in python, parentheses are used to enclose function arguments, and square brackets are used to access elements of a list or dictionary. curly brackets are not used in python. what is the difference between square brackets and curly brackets? square brackets are used to define arrays or to ...
leafnodes: a dictionary mapping leaf node ids to leaf names The available methods are : get_parent: for a given node id or leaf name, return the parent id get_children: for a given node id or leaf name, return the ids of the child nodes (leaf nodes have no children, so their child...
2)D.has_key(key) :检查字典中是否存在键key,有该键返回TRUE,否则FALSE。 3)D.keys():返回由字典所有键构成的列表。 4)D.values():返回由字典所有值构成的列表。 5)D.items():返回由字典所有键值对构成的列表,即[(key1,value1),(key2,value2),(key3,value3),...]。