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A string composed of FT is given. f Represents Forward, t represents turn, and the initial direction is 1. After turning, F changes from 1 to-1 (or-1 to 1) For example, the value of ftfffffff is 3. Given N, you must perform n operations (Change F to T or change t to F) to find how far forward from the original place (absolute value) You can search to solve this problem. For each trip, we can choose Continue in the current direction Or change the direction. In a rough estimation, the m

tables, translation tables are converted through the Maketrans method. Deletechars--a list of characters to filter in the string.Translate is a one by one mapping of characters. Each character will be replaced with the corresponding character as soon as it appears.Replace is a string substitution, and the string is replaced as a whole. The two string parameter lengths of replace can be different.Thezfill(width) method returns a string of the specified length, the original string is right-ali

1. Note the differences between the two codes3=4print (b)3=4(in Python, variables are simply labeled)2.str = r"c:\\w\e\we\weee""\ \"print (" str")3. (Version 2.7)month =int(Raw_input ("Please enter the number of months:")) Day=int(Raw_input ("Please enter the number of days:")) Hour=int(Raw_input ("Please enter the number of hours:")) minute=int(Raw_input ("Please enter the number of minutes:")) Second=int(Raw_input ("Please enter the number of seconds:") ) Result= -* -* -* -*month + -* -* -*d

1. VariablesIn other programming languages, when a variable is assigned a value to a name, the value is stored in memory, and the name is called a variable.In Python, it's a bit different, it's more like putting a name on top of a value, so you can say that Python has no variables.34= a + bprint (c)2. Places to note when using variables:You need to assign a value to the its first before using the variable.Variable names can include letters, numbers, and underscores, but variable names cannot beg

1. What is BIFBif is a built-in function, English is all called build-in-function3. Is there a difference between "FISHC" and "FISHC"?There's a difference, he's two different strings.The difference between 4.= and = == Assign a value in Python, that is, assign a value to the variable. = = represents equal to5 What is the meaning of stitching?Stitching can be easily understood in Python as a concatenation of two of the same types.Hands-on program1.Name = input ( " Please enter your name:")print("

Today I learned mainly about the main points of the cycle,1.use ofelif whiletrue:temp= Input ("Please enter a score:") score=int(temp)if ->= score >= -: Print ("A") Elif ->= score >= the: Print ("B") Elif the>= score >= -: Print ("C") Elif ->Score:print ("D") Else: Print ("Input Error")2. Use ofassert :When the following condition is true, the error occurs when the condition is false.3. Ternary conversion4,5if x > y = yelse: = xEquivalent to:if Else yThat is, the x if condition else yN

1. Use of flowchart.In the early stages of writing a program, you can try to write a flowchart, understand the logical sequence, realize the function, judge the condition, etc.2. Built-in functionsBIF = = Built-in-function, querying the built-in functions in Python, you can use code:Dir (__builtins__)3. For a function that is not clear, you can learn about functions by using Help (function).4. The game source code in the classroom:Print("...................... I love you, the union ......... ...

and self-made examplesThe following choicebox, He applies to what situation? Is that there are too many options, resulting in a buttonbox that will pull the interface too big.Here are the tutorials and examples of what you doThe next section is important to let users enter content, tutorials and testing as follows:A chapter is more important than a chapter, here is a function of multiple filling functions, multenterbox, specific tutorials and experiments are as follows:Here is the PasswordBox

) \1","FISHCFISHC") -'FISHCFISHC'> - #141 is a (decimal ASCII value of 97) value of octal binary ->>> Re.search (r"(fishc) \141","FISHCFISHC") ->>> Re.search (r"(fishc) \141","FISHCFISHCA") -'FISHCA'> in>>> Re.search (r"(fishc) \060","FISHCFISHCA") ->>> Re.search (r"(fishc) \060","FishCFishC0") to'FishC0'> +>>> Re.search (r"\.","fishcfishc0.com") -'.'> the>>> Re.search (r"[.]","fishcfishc0.com") *'.'> $>>> Re.search (r"c*","fishcfishc0.com")Panax Notoginseng"'> - #* indicates repeated unlimited

Title: Create a two-fork tree and output the number of layers where each character resides. If output is requiredA on the first floorB, C on the second floorD, E on the third floorThe code is as follows:#include #includetypedefstructBitnode {Chardata; structBitnode *lchild,*Rchild;} Bitnode,*Bitree;//Create a binary tree and contract the user to enter the data in the same way as the pre-order traversalvoidCreatebitree (Bitree *T) {CharC; scanf ("%c",c); if(' '==c) { *t =NULL; } Else {

corresponding improvements to the code:1AssumeCS:codeseg2 codeseg Segment3 movAX,0FFFFH4 movDs,ax;(DS) =0FFFFH5 6 movax,0020h7 movEs,ax;(es) =0020h8 9 movBx0 ;(BX) = 0, at this time, Ds:bx point ffff:0,es:bx refers to 0020:0Ten movCx A One A S: - movDL,[BX];(DL) = ((DS) *16+ (BX)), the data in the FFFF:BX is passed to the DL - mov es:[BX],DL;((es) *16+ (bx)) = (DL), the data in the DL is passed into the 0020:BX the - IncBX -

right child lead }}//initialize a head pointervoidInorderthreading (Bithrtree *p, Bithrtree T) { *p = (Bithrnode *)malloc(sizeof(Bithrnode)); (*P)->ltag =Link; (*P)->rtag =Link; (*P)->rchild = *p; if(!T) {(*P)->lchild = *p; }Else { (*P)->lchild =T; Pre= *p; Inthreading (T); Pre->rchild = *p; Pre->rtag =Thread; (*P)->rchild =Pre; }}voidVisit (Charc) {printf ("%c", c);}//Middle sequence Traversal binary tree, iterativevoidInordertraverse (Bithrtree T) {Bithrtree p; P= t->Lchil

The GUI class library (Easygui) for Python's third-party simple graphical interface is downloaded and installedDownload : Easygui official website http://easygui.sourceforge.net Download Easygui compression pack Install : Copy the extracted easygui.py to Python under the Lib\site-packages folder under the installation directory Test : Bring up Python's idle, enter>>>import Easygui>>>easygui.msgbox ("This is test!")If a dialog box appears, it proves that the installation was successful

identical tangent circlesImport turtleturtle.speed (turtle.circle)turtle.circle(()turtle.circle ( ) turtle.circle (40) draw a pentagram import Turtleturtle.speed ( 100) Turtle.forward ( 100 144) Turtle.forward ( 100 144) Turtle.forward ( 100 144) Turtle.forward ( 100 144) Turtle.forward ( 100 144) Draw an all-yellow pentagramImport turtleturtle.speed (turtle.fillcolor) ("yellow") Turtle.begin _fill (Turtle.forward)turtle.right(144) Turtle.forward (+) turtle.right(144 ) Turtle.forward

) {fx2-=20;fx3-=20;}}If the right button is pressedif (E.getkeycode () ==keyevent.vk_right) {if (FX1f = 1;}else {f = 0;}x+=10;if (f = = 1) {fx1+=20;fx4+=20;}if (f = = 0) {fx2+=20;fx3+=20;}}/*if (E.getkeycode () ==keyevent.vk_down fy1>0) {y=y+10;if (fy1fy1+=20;fy4+=20;}else {fy2+=20;fy3+=20;}SYSTEM.OUT.PRINTLN ("Test key");}if (E.getkeycode () ==keyevent.vk_left fx1>0) {x-=10;if (FX1GT;=FX2) {fx1-=20;fx4-=20;}else {fx2-=20;fx3-=20;}SYSTEM.OUT.PRINTLN ("Test left button");}if (E.getkeycode () ==k

0. Please describe what is a list in a sentence? Describe what a tuple is in a sentence?List: A large warehouse where you can add and remove anything at any time.Tuples: Closed lists, once defined, cannot be changed (cannot be added, deleted, or modified).1. Under what circumstances do you need to use tuples instead of lists?When we want content not to be easily rewritten, we use tuples (putting power into a cage).When we need to change data frequently, we use lists.2. Connect the built-in metho

easily manipulate the URL# the URL can be constructed into a Request object first and passed into the urlopen #Request The meaning of existence is to facilitate the passing of some information at the time of the request, while urlopen does not8. because urlopen () is not supported for advanced features of some HTTP, we can use the Urllib.request.build_opener () method if we want to modify the header. Of course, you can also use Urllib.request.Request () to implement browser simulations. Focus

What language is 1.python?Python is an object-oriented, interpretive, high-level language that is part of a scripting language.What is 2.IDLE?Idle is the basic IDE for developing Python programs (integrated development environment) with basic IDE functionality and a good choice for non-commercial python development.What is the role of 3.print ()?Print () method for printing outputWhat are the symbols in 4.python that represent multiplication?*5. Why print ("I love You" + 5) can not execute error

! ‘) Return FuninFunout () ()6. Below is an example of a "closure", so what do you print out visually?Def funx (): x = 5 Def funy (): nonlocal x x + = 1 return x Return FunyA = Funx ()Print (A ())Print (A ())Print (A ())678Some fish oil may be more confused, this ... What is the same as a global variable? The local variable x should not be reinitialized every time it is called?!In fact, we have a closer look to understand that when a = Funx (), as long as the A v

; score >= 0: print (' D ') Else: print (' Input error! ‘)　　 Of the above three scenarios, the third one has the lowest time complexity. #注意 Hang ElseFor example, a beginner in C can easily be fooled by a bit of code. if (Hi > 2) if (Hi > 7) printf (' good ') Else printf (' Fuck ')　　 Conditional expressions (Ternary operators) syntax: x if condition else y Assertion (Assert) Assert this keyword we call assertions, when the condit