python turtle tutorial

integer:"== 1 while number : Print (i) = i + 1 = number-1Question Three: Requirements(read The original answer, still do not understand,) source code attachedtemp = input ('Please enter an integer:') number=int (temp) whilenumber:i= Number-1 whileI:Print(' ', end ="') I= I-1J= number whileJ:Print('*', end ="') J= J-1Print() number= Number-1Proper noun explanation: short circuit logicIf A and B: #如果a是false, then skip B's judgment and result directly falseIf a or B: #如果a为true, then ski

Turtlescreen object, the turtle on.P.speed (10) #Turtlescreen methods can then is called for that object.P.left (90)#Turn Turtle left by angle units. Direction Adjustment BrushP.penup ()#Pull the pen Up–no drawing when moving.P.goto (0,-200)#Move Turtle to an absolute position. If the pen is off, draw line. Don't change the

(points[0][0], points[0][1]) My_turtle.end_fill ()defGet_mid (P1, p2):return((p1[0]+p2[0])/ 2, (p1[1]+p2[1])/ 2)defSierpinski (points, Degree, my_turtle): Color_map=[' Blue ',' Red ',' Green ',' White ',' Yellow ',' Violet ',' Orange '] Draw_triangle (points, Color_map[degree], My_turtle)ifDegree> 0: Sierpinski ([points[0], Get_mid (points[0], points[1]), Get_mid (points[0], points[2]), Degree-1, My_turtle) Sierpinski ([points[1], Get_mid (points[0], points[1]), Get_mid (points[1], points[2]),

1. Hello world!Print("Hello world! ")2. Simple Interactive (interactive, file-style) textbook P19>>> name = input ("pleaseinput your name:")>>> please input Your name:poonprint(name)>>> Poon3, the user input two numbers, calculate and output two numbers of the sum:S1 = float (Input ("Please input the first num:")) S2= Float (Input ("Please input the second num:")) Sum= S1 +S2Print("The result is:%s"%sum)Print("The result is%.2f"% ((Float (input ("The first num is")) + (float (input ("The secibd

()Turtle.forward (400)Turtle.right (90)Turtle.forward (200)Turtle.right (90)Turtle.forward (400)Turtle.right (90)Turtle.forward (200)Turtle.right (90)Turtle.end_fill ()# Time.sleep (5)Def Draw_big_star ():Turtle.color (' Yellow ')Turtle.fillcolor (' Yellow ')# turtle.speed (1)Turtle.penup ()Turtle.goto (-175,155)Turtle.pendown ()Turtle.begin_fill ()For I in range (5):Turtle.forward (50)Turtle.right (144)Turtle.end_fill ()def draw_smallstar (x, Y, z):Turtle.color (' Yellow ')Turtle.fillcolor ('

Turtle Graphics LibraryTurtle Library is a python built-in graphical module, belonging to one of the standard libraries, in the Python installation directory of the Lib folder, commonly used functions are the following: Brush control functions penup(): Lift up the brush; pendown(): Falling brush; pensize(width): Brush width;

Two days ago lazy, did not insist, today began, hope can persist,Today the main learning is the data type, about Python, the data type is mainly integer (int), Boolean type (bool), floating-point (float), e notation (e)As an example, an integer (int) is mostly integers, and a Boolean type (BOOL) is judged, true, or false. Float (float) contains the decimal point, and the e notation is the scientific counting method.For examples, there are a few points

) Turtle.right (90) Turtle.forward (600) Turtle.right (90) Turtle.forward (400) Turtle.end_fill ()##画大五角星Turtle.penup () Turtle.goto (-263,163) Turtle.pendown () Turtle.color ('Yellow') Turtle.fillcolor ('Yellow') Turtle.begin_fill () Turtle.right (90) forIinchRange (5): Turtle.forward (100) Turtle.right (144) Turtle.end_fill ()##画小五角星##第一个Turtle.penup () Turtle.goto (-126,211) Turtle.pendown () Turtle.color ('Yellow') Turtle.fillcolor ('Yellow') Turtle.begin_fill () Turtle.right (90) forIinchRa

Reference blog:Http://biancheng.dnbcw.info/python/443280.htmlHttps://docs.python.org/2/library/turtle.html?highlight=turtle#turtle.speed：CodeImportTurtle as TTImportNumPy as NYImportRANDOMX= Ny.array ([[. 5],[.5]]) p= [. 85,.92,.99,1.00]A1= Ny.array ([[. 85,.04], [-0.04,.85]]) A2= Ny.array ([[. 2,-0.26], [.23,.22]]) A3= Ny.array ([[ -0.15,.28]], [.26,.24]]) A4=Ny.array

the is isn't given, return to the current mode. It means:If the x/y unit ratio is not equal to 1, the pattern angle is distorted. It's supposed to resemble Earth projections. OnTimer (fun,t=0) timer, perform fun function periodically Title (title) set the caption of the windowBye () Destroy objects on the screenSource: def _destroy (self): root = self._root If root is _screen._root: turtle._pen = none

1. Prelude:When drawing with turtle, you need to install the corresponding Python interpreter and IDE, I installed Pycharm, after installing Pycharm, in Pycharm install the corresponding library module, drawing can introduce turtle module, You can introduce NumPy modules if you want to perform operations.Note: Turtle i

1.Print ("helloWorld") Hello World2.>>> name = input (" Enter Name:") Enter name: Guo Jing print ("{} classmate, Learn python well, promising! " . Format (name) Guo Jing students, learn python, promising! Print ("{} heroes, learn Python, promising! ") " . Format (Name[0]) learned, learn python, promising! Print ("{} br

1.floor Division (this is only about division, others do not mention)In Python3, there are two kinds of division operations, one is true, the other is floor division, and the two are separate, as shown in the code:2. Use of power (* *)A = 2**2**32= (2 **2) **323. For an even and odd number within 100, pay attention to the difference between the code.# for an even number within 100 (inclusive)num = when num : if num% 2 :Print () Else: print(num) = num-1 # ask

love" + "You") I loveyou>>> print (' I love ' + ' you ') I love You>>> print ("I love your" *8) I love you I love you I love you I love you I love you I love you I love you I love you >>> print ("I love you\n" *8) I love YouI love YouI love YouI love YouI love YouI love YouI love YouI LoveError code:#python2系列中可以使用, but error >>>print "Hello world!" in Pyhton3 series Syntaxerror:missing parentheses in call to ' print '#C语言输出函数 >>> printf ("Hello world!") Traceback (most recent): File "#

1. Rules for variable naming:1. Variables are assigned before they are used.2 variables can be letters, underscores, numbers, but cannot start with a number.The 3 variables are case-sensitive and represent different meanings.PS: In Python, you just paste the value into a variable, not a store, so you can think of no variable in Python.2. StringThe use of strings is to be noted for consistencyPS: Use of quot

Topic:Hello world!Simple Interactive (interactive, file-style) textbook P19The user enters two numbers, calculates and outputs the sum of two digits (try to implement it in one line of code).The user enters the triangular three-side length and calculates the area of the triangle: (Helen Formula)Enter a radius to calculate the area of the circle.Draw a set of identical tangent circlesDraw a PentagramDraw an all-yellow pentagram1. Hello world!Print ('Hello world! ' ) Hello world!2. Simple interact

">>>for each in Zip (LIST,STR):Print (each)(1. "M") ...4. Create and Invoke functions:>>>def myfirstfunction ():Print ("Hello World")>>> myfirstfunction ()Hello World>>>def First (name):Print (name+ "is Handsome")>>>first ("Myj")Myj is handsome.5. Collecting parameters>>>def Test (*parms):Print ("%d parameters"%len (parms))Print ("The second parameter is:", parms[1]) # * Pack>>>def Test (*parms) #* unpacking>>>a=[1,2,3]>>>test (*a)There are three parameters, the second parameter is 2.6. function

Monte Carlo simulation# param numberdarts (int)# param Grapher (Turtle)# return approximation of Pi (float)def montepi (Numberdarts, Grapher):# Initialize Incirclecount counter (this was an accumulator)Incirclecount = 0# Loop for NumberdartsFor I in range (0, numberdarts):# Get random coordinate and position dartx = Random.random () * 2-1y = random.random () * 2-1# Draw Red dot and INCREMENT COUNTER if in circle, blue dot if notIf InCircle (x, y) = =

1. Leap year (need to be optimized, can only be cycled once)year = Int (input ("Please enter the number of years:"))ifYear% 4: Print("not a leap year")#It can't be divisible by 4.Else: ifYear% 400: ifYear% 100: Print("Leap Year")#That can be divisible by 4, but not divisible by 100. Else: Print("not a leap year")#Divisible by 4 and divisible by 100, but not evenly divisible . Else: Print("Leap Year")#Divisible by 4 can be divisible by 400. E

Hello world!Print ("Hello Word")Simple Interactive (interactive, file-style) textbook P19The user enters two numbers and calculates and outputs the sum of two digits:N1=input ("1") n2=input ("2:")Print (Float (N1) +float (n2))The user enters the triangular three-side length and calculates the area of the triangle: (Helen Formula)A = float (input ('input triangle First side length:')) b= Float (Input ('input Triangle Second side length:')) C= Float (Input ('input triangle Third side length:'))#Ca