learning python 4th edition pdf

functions. For example: POW is used to calculate standard functions such as Solutionkeys GT;GT;GT;2**38GT;GT;GT;POW (2.3) 8pow, called built-in functions, or you can customize functions. The 1.9 module can be thought of as an extension that imports into Python to enhance its functionality and is imported using the Import command. For example: Import the Math module with import and use >>>importmath>>>math.floor (32.9) in the format "module. function"

Basic Python Tutorial (second edition) Learning Note Strings (Chapter 3rd)All basic sequence Operations (index, Shard, multiply, Judge membership, seek length, maximum minimum) also apply to strings.The string is not to be changed;The left side is the format string, and the right side is the value that needs to be formattedprint '%s=%d '% (' x ', ') ==> x=100% in

"Basic Python Tutorial (second edition)" Learning note statements/loops/conditions (Chapter 5th)print ' AB ', 123 ==> AB 123 # Insert a spaceprint ' AB ', ' CD ' ==> AB CD # Inserted a spacePrint ==> 1 2 3Print (==>) (1, 2, 3)#在脚本中以下ABCD连在一起输出print ' AB ',print ' CD 'Import Somemodule #导入模块From Somemodule import somefunction #导入函数From Somemodule import Function1,

"Basic Python Tutorial (second edition)" Learning notesBasic part (1th chapter)IdeWindows:idle (GUI), Eclipse+pydev; Python (command line);Linux/unix:python>>> 1/2=0 note divisible by 0.>>> from __future__ Import Division performing normal divisionPython-qnew Perform a normal divisionDivide, 1//2=0;% take the remainder

() if user== Username and Passwd==password:print ("\033[32;1muser has passed authentication\033[0m") Res=func (*args,**kwargs) # print ("---after authentication---") #保留要装饰函数home的输出结果 r Eturn Res else:exit ("\033[31;1minvalid username or password\033[0m") elif au th_type== "LDAP": Print ("Engage the yarn LDAP, will not ....") ") return wrapper return Outer_authdef index (): Print (" Welcome to Index page ") @auth (auth_type=" local ") def Hom E (): Print ("Welcome to Home Pag

Basic Python Tutorial (second edition) Learning note files and materials (11th)Open File:Open (Filename[,mode[,buffering]])Mode is the pattern of reading and writing filesF=open (R ' c:\somefile.txt ') #默认是读模式+ means can read and write, R read mode, W write mode, a append mode, b binary mode;The newline character is \ r \ n in Windows, and in Unix,

a success to see when the value2 is assigned. In the same way, we can use __setattr__ to prevent subsequent assignments of properties that are already in the class: classGet_try ():def__init__(Self, value):Self. value=valuedef__getattr__(Self, item): Self. Value=itemdef__getattribute__(Self, item):PrintItemdef__setattr__(Self, key, value):offKeyinchSelf.__dict__: Print ' already exist 'else :self. __dict__[Key]=valueif __name__ = = "__main__":G=get_try (' value ')G.value=4g.value1=3Print

Basic Python Tutorial (second edition) Learning Note function (Chapter 6th)To create a function:def function_name (params):BlockReturn valuesRecord function:def function_name (params):' NOTE ' #注释BlockReturn valuesfunction_name.__doc__Help (Function_name)Return # no value returnedPosition parameters and keyword parameters:Keyword parameter to provide the name of

Code:# Jigsaw Puzzle fromsysimportexitfromrandomimportshuffle# game Victory def Victory (): print ("' ******666**victory* *!!!!! ****** ") # definition maindefmain (): boxs= [' ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ']shuffle (boxs) whiletrue:boxs_num=boxs print ("' ******%s%s%s**%s %s%s**%s%s%s****** ' %tuple (boxs_num)) ins =input (' Please enter the number to be moved, (0 exit game) \> ') Ifins== ' 0 ': exit () kong_index=boxs_num.index (' ') num_index=boxs_num.index (