quickest way to learn python

return function, try writing a few functions yourself to get them to return some values. You can put anything that can be placed on the right side as the return value of a function. The end of the script is a puzzle. I use the return value of a function as a parameter to another function. I link them together, just like I write math equations. It may be a bit hard to read, but you'll know the result if you run it. Next, you need to try to make the same function as the expression in the nor

. - - """% (like, age)The results are as follows: (performed under PowerShell)Ps:1. Pydoc in Windows usage, must go into the Python installation directory, execute python-m pydoc raw_input; (Of course you can replace the raw_input with other modules, such as Open, OS,)Here is the exercise code for Exercise 14:1 fromSysImportargv2 3Script, user_name =argv4prompt ='>'5 6 Print "Hi%s, I ' m the%s script."%(u

;>Next we have to do an exercise, you must be very careful, I ask you to write down this exercise, and then try to understand what it does. This exercise is very interesting, you may have the feeling of being enlightened when you finish it.1Cities = {'CA':'San Francisco','MI':'Detroit',2 'FL':'Jacksonville'}3 4cities['NY'] ='New York'5cities['OR'] ='Portland'6 7 def find_city (Themap, State):8 ifState in Themap:9 return Themap[state]Ten Else: OneReturn"Not found." A

notation reserved 2 decimal places>> 1.29e+00Formatting operator Auxiliary directivesSymbolic effect* Define width or decimal point accuracy-Used for left alignment+ Show plus sign (+) in front of positive number# 0 (' 0 ') is displayed in front of the octal number, preceded by ' 0x ' or ' 0X ' in hexadecimal (depending onUsing ' x ' or ' x ')0 The number shown is preceded by ' 0 ' instead of the default space% ' percent ' output a single '% '(VAR) mapping variable (dictionary parameter)M.N m i

Exercise 37: Reviewing various symbolsIt's time to review your learned symbols and Python keywords, and you'll learn something new in this section. What I'm doing here is a list of all the Python symbols and keywords that are worth mastering.In this lesson, you need to review every keyword, remember its role and write it down, and then search the Web for its true

mistaken. You need a way to tell that the double quotes inside the Python string are not true double quotes.To solve this problem, you need to escape the double and single quotes, and let Python enclose the quotation marks in the string. Here's an example:The second method is to use "three quotation marks (triple-quotes)", or "" ", you can put any number of line

honey.The fat bear is in front if another door.How are you going to move the bear?> Taunt bearThe bear has moved from the door. you can go through it now.> Taunt bearI got no idea what that means.> Open doorThis room is full of fold. How much do you take?> 4Man, learn to type a number. Good job!Root @ he-desktop :~ /Mystuff # python ex35.pyYou are in a dark room.There is a door to your right and left.Which

find a problem with the map, adjust the map so that the code and the map match each other.One last suggestion: Every programmer will be influenced by irrational fears when they start a big new project. In order to avoid this fear, they will stall time and end up doing nothing. I sometimes do that, everyone has this experience, the best way to avoid this situation is to make a list of what you want to do, one time to complete the same.Start doing it.

explain the meaning of the code to yourself through annotations. Explain how each function is used, the purpose of each variable, and any other aspect of the content, as long as it helps you to understand the code.Finally, each part of the code that is difficult to track, line-by-row or function-by-bit tracking variable values. You can print one more copy and write the value of each variable you want to "track" in the blanks.Once you have a basic understanding of the function of the code, go ba

Exercise: Your first website Exercise: getting input from the browser Exercise: Create your Web game Select a project, read through its documentation and easy tutorials. During the reading process, write the code in the document yourself and let them operateYes. I learned this way, in fact, every programmer is doing so. After reading the tutorials and documentation, try writing something.Come out. Write anything, even if it is written by others can b

Now we enter more variables and print them. We usually use "" to refer to strings. Strings are quite convenient. In practice, we will learn how to create strings containing variables. There is a special way to insert a variable into a string, which is equivalent to telling Python: "Hey, this is a formatted string. Put the variable here ." Enter the following prog

done."Out_file.close ()In_file.close ()#另一种写法 (only one line):From sys import ARGVScript,from_file,to_file = argvOpen (To_file, ' W '). Write (open (from_file). Read ())Exercise: naming, variables, code, functionsWhat are the rules for function names?As with the variable name, it can be as long as it consists of alphanumeric and underscore, and not the number beginning.What does it mean to be *args *?Its function is to tell Python to accept all the p

It seems that the following is the most elegant implementation.Other, either node redundancy, or initialize ugly ...#!/usr/bin/env python#-*-coding:utf-8-*-classNode:def __init__(self, initdata): Self.__data=InitData self.__next=NonedefGetData (self):returnSelf.__data defGetNext (self):returnSelf.__next defSetData (Self, newdata): Self.__data=NewDatadefSetnext (Self, newnext): Self.__next=Newnextclasssincyclinkedlist:def __init__(self): Self.head=No

The 32-33 chapters will be for-loop and while-loop loops.The two kinds of syntax will not be said. Simply say the individual's understanding for and while.I think he learn python.First say the same point:1, can not do a single operation, For-loop if the collection is empty, the condition behind the while is false he can also do a loop operation is not done, the test method is as follows:　　 for inch []: Print " 1 " , I, 　　　 While I : Print 1

line, and clarify your ideas for yourself. Even if you can't clear your mind, you can also know exactly where you really didn't understand. Write a script similar to the one in the previous exercise and read the file you just created, using Read and argv . There are too many places to repeat in the file. Try to print line1, line2, line3 with a target.write () , you can use strings, format characters, and escape characters. Find out why we need to give open multiple a ' W ' paramete

!" - Else: - Print "Well , doing%s is probably better. Bear runs away."% Bear - + elifDoor = ="2": - Print "You stare to the endless Abyss at Cthulhu ' s retina." + Print "1. Blueberries." A Print "2. Yellow jacket clothespins." at Print "3. Understanding revolvers yelling melodies." - -Insanity = Raw_input (">") - - ifInsanity = ="1" orInsanity = ="2": - Print "Your body survives powered by a mind of Jello. Good job!" in Else: - Print "The

Today read the 40th chapter of LPTHW after the enlightened, the original has been dull, do not understand the definition and use of the class, there is not quite understand the definition of self.class MyStuff (object): def __init__ "and nowa thousand years between"def Apple: print "I AM classy apples! "　　Say the class and the Mini module is similar, then for the class, there must be an import-like concept. The concept name is "instance (instance)". This is just a acting knowledgeable, it

,%r tall,and%r heavy. "% (age,height,weight)#exercise12 prompting othersY=raw_input ("Name?") #这句话会用 "Name" prompts the user and assigns the result of the user input to the variable Y.#这就是我们提问用户并且得到答案的方式.Age=raw_input ("How old is You?")Height=raw_input ("How Tall is You?")Weight=raw_input ("How much does you weigh?")Print "So" is%r old,%r tall,and%r heavy. "% (age,height,weight)#exercise13 parameters, unzip, variableFrom sys import ARGVScript, first, second, third = argvPrint "The script is cal

? What happens if you don't indent? Is it possible to put the other Boolean expressions in Exercise 27 in the "if statement"? Try it. What happens if I change the initial value of the variable people, Cats, and dogs ? Exercise Exercises1.The IF statement.if sentence1: sentence2The sentence one is the judgment part , of course, it can also be a Boolean expression of the previous lesson.The white space in front of the statement two is also part of the IF statement, and using i

":Return ' death 'elif action = = "Slowly Place the bomb":Return ' Escape_pod 'ElseReturn ' The_bridge 'def escape_pod (self):Good_pod = Randint (1,5)Guess = Raw_input ("[Pod #]>>>")if int (guess)! = good_pod:Return ' death 'ElseExit (0)Class Engine (MAP):def __init__ (Self,start):Self.start = Startdef play (self):Next = Self.startWhile True:print "\ n-----------"GetAttr (Self,next)Next = Guest ()A_game = Engine ("Central_corridor")A_game.play () Remark: Beginner young novice, Welcome to the gre