python print dictionary pretty

painted in incense '} + """Delete1 delinfo["Teacher1"]2 Print("after the deletion:", info)3Info.pop ("Teacher2")4 Print("2 after deletion:", info)5 Info.popitem ()6 Print("after random deletion:", info)7 """8 after deletion: {' teacher2 ': ' Jing Xiang ', ' teacher3 ': ' Yui Hatano ', ' teacher4 ': ' Maria Ozawa ', ' teacher5 ': ' On the original Mövenpick ', '

find each key-value pair in the dictionaryFive. Dictionary method: items (): A list of tuples that generate all key-value pairsKeys (): Generate a list of all keysVALUES (): Generate a list of all valuesCopy (): A shallow copy of the dictionary (referential relationship)Six. An exampleTake "Gettysburg speech" as an example to analyze, judge the number of words and corresponding frequency, and to sort the d

The dictionary in Python belongs to an advanced data structure, which is based on the hash table, and the complexity of the hash table in finding an element is basically O (1), so it is a very useful data structure. The following is a brief introduction to the operation of some dictionaries of capitalCreate a dictionary, assign a value to a dictionarynamerank={}n

‘:"Value1",‘Key2‘:{‘K1‘:‘V1‘,‘K2‘:[‘vv1 ", ' vv2 ' "}, "key3 ": 886, "key4": [ ' armin", Modifications to dictionaries and lists in nested:A_dict ={‘Key1‘:"Value1",‘Key2‘:{‘K1‘:‘V1‘,‘K2‘:[‘Vv1‘,‘Vv2‘]},‘Key3': 886,‘Key4‘:[‘Armin‘,‘Admin ", [1,2,3],{" k41 ": " v41 ' }]} A_dict[ "key4"][3][ ' n "]= "test" #向 Keys4 in the fourth element Add a key n value to test. a_dict[ "key4print (a_dict) Nested applications:A_dict =[ {"Name" :"Armin","Pwd" :"123"}, {"Name" :"Admin","Pwd" :"123

form a list >>> dict = {' X ': 1, ' Y ':2}>>> dict.items () dict_items ([' X ', ' 1 '), (' Y ', 2)]) variable unpacking (both sides to be consistent) >>> Dict = {' x ': 1, ' Y ':2}> >> t1,t2 = Dict.items () >>> print (T1) (' x ', 1) >>> print (T2) (' Y ', 2) >>gt ; Dict.keys (return key list) >>> Dict = {' x ': 1, ' Y ': 2, ' Z ':3}>>> Dict.keys () Dict_keys ([' X ', ' y ', ' z ']) dict.value ( return valu

#字典的一键多值 print ' scheme a list as the value value of Dict allows the repetition of ' d1={} key=1 value=2 D1.setdefault (key,[]). Append (value) value=2 D1.setdefau LT (key,[]). Append (value) print D1 #获取值 print ' scheme one gets the value ' Print List (D1[key]) ' print ' sc

:>>>d.pop (' eggs ') 3>>>del d[' eggs ']Other Dictionary methods:Reading a nonexistent key tends to make an error, using the Get method to avoid errors and only returning none>>>d.get (' spam ') #A key that's There2>>>print (D.get (' toast ')) #A key that's missingnone Gt;>>d.get (' toast ') #if a key is missing, and is default88The dictionary size comparison is

Basic concepts, especially objects and classes, are described in the basic tutorials. The advanced tutorial further expands on the basic tutorials to illustrate Python details. Hopefully, after the advanced tutorial, you have a more comprehensive understanding of python. As we said before, the list is a class in Python. A particular table, such as NL = [1,3,8],

This article describes how to use the items () method to return dictionary element pairs in Python. it is a basic knowledge in Python. For more information, see items () method to return the list of dictionary (key, value) tuples Syntax The syntax of the items () method is as follows: Dict. items () Paramet

This article describes how to implement a simple dictionary tree in Python. The example analyzes the definition, implementation, and usage skills of the Python dictionary tree, for more information about how to implement a simple dictionary tree in

DictionaryPython built-in dictionary: dict support, Dict full name dictionary, in other languages also known as map, using key-value (Key-value) storage, with a very fast search speed.If implemented with Dict, only need a "name"-"score" of the table, directly based on the name of the results, no matter how large the table, the search speed will not be slow. Write a dict in

Python cookbook (data structures and algorithms) keeps the dictionary orderly. This example describes how to keep the dictionary in order by using Python. We will share this with you for your reference. The details are as follows: Problem:When creating a dictionary and perfo

The Python dictionary belongs to a data type, and we can store the data in a dictionary, which is defined using curly braces "{}".For example, now to store a person's information and then read it, you can use a slice of the way to reflect:In [1]: info =‘Tom 180 Male‘In [2]: info[1:3]Out[2]: ‘om‘In [3]: info[0:3]Out[3]: ‘Tom‘So what if we want to save a lot of peo

SQL Db_conn . query (SQL) sql = "INSERT into Vipactiveusernum (active_time) VALUES ('%d ')"% (dword_time) print SQL Db_conn.query (SQL) sql = "Update vipactiveusernum set year_account_num=%d, year_mac_num=%d, year_ip_num=%d, month_account_num=%d, MO nth_mac_num=%d, month_ip_num=%d, week_account_num=%d, week_mac_num=%d, week_ip_num=%d, total_mac_num=%d, Total_ip_ num=%d, before_account_num=%d, before_mac_num=%d, before_ip_num=%d where active_time= '%d