python built-in function 1: https://www.cnblogs.com/raitorei/p/11813694.html
# Max, min advanced play # L = [1,3,100,-1,2] # Print (max (L)) # Print (min (L)) # # # print(list(zip(('a','n','c'),(1,2,3)))) # print(list(zip(('a','n','c'),(1,2,3,4)))) # print(list(zip(('a','n','c','d'),(1,2,3)))) # # p={'name':'alex','age':18,'gender':'none'} # print(list(zip(p.keys(),p.values()))) # # print(list(p.keys())) # # print(list(p.values())) # # print(list(zip(['a','b'],'12345'))) # L = [1,3,100, -1,2] # print (max (l)) # print (min (l)) # age_dic={'alex_age':18,'wupei_age':20,'zsc_age':100,'lhf_age':30} # print(max(age_dic.values())) # # # The default is relatively dictionary Key # # Print (max (age_dic)) # # for item in zip(age_dic.values(),age_dic.keys()): #[(18,'alex_age') (20,'wupeiqi_age') () () ()] # print(item) # # print('=======>',list(max(zip(age_dic.values(),age_dic.keys())))) # L = [ # (. 5, 'E'), # (. 1, 'B'), # (. 3, 'A'), # (. 4, 'D'), # ] # # L1 = [ 'AlO' , 'b12', 'c10' , 100] # can not be compared between different types # L1 = [ 'AlO', 'A2', 'AlO'] # can not be compared between different types # Print (List (max ( L))) # Print ( '--->', List (max (L1))) # L = [1,3,100,-1,2] # Print (max (L)) # DIC = { 'AGE1': 18 is, 'Age2': 10} # Print (max (DIC)) # key comparison is # Print (max (dic.values ())) # comparison is key, but do not know the key corresponding # # Print (max (zip (dic.values (), dic.keys ()))) # zip used in combination # # # people=[ # {'name':'alex','age':1000}, # {'name':'wupei','age':10000}, # {'name':'yuanhao','age':9000}, # {'name':'linhaifeng','age':18}, # ] # # max(people,key=lambda dic:dic['age']) # print('值：',max(people,key=lambda dic:dic['age'])) # ret=[] # for item in people: # ret.append(item['age']) # print(ret) # max(ret) # Corresponding to the value of ascll # Print (CHR (97)) # Print (the ord ( 'A')) # print(pow(3,3)) #3**3 # print(pow(3,3,2)) #3**3%2 # Reverse # L = [1,2,3,4] # Print (List (the reversed (L))) # Print (L) # Round () method returns the rounded value of the floating point number x. # Print (round (3.5)) # The SET () function to create an unordered set of elements is not repeated, the relationship can be tested, remove duplicate data, you can calculate the intersection, difference, and sets. # Print (SET ( 'Hello')) # 切片 # l='hello' # s1=slice(3,5) # s2=slice(1,4,2) # # print(l[3:5]) # print(l[s1]) # print(l[s2]) # print(s2.start) # print(s2.stop) # print(s2.step) # Sort # L = [3,2,1,5,7] # L1 = [3,2-, 'A', 1,5,7] # Print (the sorted (L)) # # Print (the sorted (L1) ) Sort # essentially size comparison between different types can not compare the size of # people = [ # { 'name': 'Alex', 'Age': 1000}, # { 'name': 'wupei', 'Age ': 10000}, # {' name ':' yuanhao ',' Age ': 9000}, # {' name ':' linhaifeng ',' Age ': 18 is}, # ] # Print (the sorted (people, Key = DIC the lambda: DIC [ 'Age'])) # name_dic = { # 'abyuanhao': 11900, # 'Alex': 1200, # 'Wupei': 300, # } # print(sorted(name_dic)) # # print(sorted(name_dic,key=lambda key:name_dic[key])) # # print(sorted(zip(name_dic.values(),name_dic.keys()))) # print(str('1')) # print(type(str({'a':1}))) # dic_str=str({'a':1}) # print(type(eval(dic_str))) # l=[1,2,3,4] # print(sum(l)) # print(sum(range(5))) # # View Type # Print (of the type (1)) # # msg='123' # # if type(msg) is str: # msg=int(msg) # res=msg+1 # print(res) # VARS () function returns a dictionary object attributes and attribute values of the object of the object. # DEF the Test (): # msg = 'anti-Satan Satan Faesade Van Lang Fei Aisi Aspen Tiffen' # Print (about locals ()) # Print (VARS ()) # the Test () # Print (VARS (int)) # Call other files # Import ------> SYS -----> Import __ __ () # Import the Test # test.say_hi () # import 'test'#报错 # module_name='test' # m=__import__(module_name) # m.say_hi()