python get value from dictionary

. viewvalues ( D. eq (d. iter (d. repr (d. fromkeys (d. pop ( D. format (d. le (d. setattr (d. get (d. popitem ( >>> D. Add dictionary elements >>> Nameinfo = {} >>> Nameinfo ['A1'] = 'yangrong '# if the dictionary contains an a1 primary key, it overwrites the original value. If no, it is added. >>> Nameinfo {'A1': 'ya

Adding and traversing Python dictionary key-value pairsTo add a key-value pairFirst define an empty dictionarydic={}1Assign a value directly to a key that does not exist in the dictionary to adddic[' name ']= ' Zhangsan 'Dic{' nam

dictionary contains the following built-in functions:CMP (Dict1, DICT2) #比较两个字典元素. Len (dict) #计算字典元素个数, which is the total number of keys. STR (dict) #输出字典可打印的字符串表示. Type (variable) #返回输入的变量类型 returns the dictionary type if the variable is a dictionary. The Python

a list. Iterkeys, however, returns an iterator for the key.Pop pops up the value of the given key. Popitem pops up the last element (actually a random item), but if you want to remove and process the dictionary one after another, the popitem is much more efficient because you don't have to get a list of the dictionary's key values first. Values and Itervalues m

Basic python tutorials-A Dictionary of notes Create dictionary A dictionary consists of multiple key-value pairs. Each key and corresponding value are separated by a colon, and items are separated by a comma. The entire

Dictionary dict:A dictionary is actually the equivalent of a map in Java to store key-value pairs. The data stored in it is unordered.If there is such a data:t1=[' name ', ' age ', ' sex 't2=[' Tom ', ' Male 'by Zip (t1,t2) you can get to such data [(' Name ', ' Tom '), (' Age ', ' + '), (' Sex ', ' male ')]The

First, what is a dictionaryA dictionary is the only type of mapping in the Python language.A hash value (key, key) and a pointer to an object (values, value) are a one-to-many relationship that is often considered a mutable hash table in the mapping type object.The Dictionary