python turtle example

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

can only look at the data to see what kind of things in the class, inheritance, when the creation of the instance when the change occurred.*, The relationship between classes in Python can be vertical, using the inheritance mechanism to use all the properties and methods in the base class, but the parent class can not use the methods and properties of the subclass, such as fish and sharks, carp salmon, and so on; Of course, there can be horizontal re

Python libraries are numerous and constantly updated, so the most efficient way to learn these libraries is to read the official Python documentation. At the same time with the help of Google and Baidu. The official document address for the Turtle Library described in this article is: https://docs.python.org/3.5/library/turtle.html the basic ideas for drawing dyn

num = num-1 print (i)Another elementary turtle'stemp = input (' Please enter an integer: ') number = Int (temp) i = 1while number: print (i) i = i + 1 number = Number-19. (Copy the Little Turtle)temp = input (' Enter an integer: ') number = Int (temp) while number: i = number-1 while I: print (", end =") i = i -1 j = number while J: print (' * ', end = ') j = j-1 print () number = Number-11

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

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 ('

1while statement, when the condition is true, it will continue to loop, such as the following example, but can be used ctral + C to force the end while ' C ' : print ("iLove you")2. Observe the number of printsTen while 0 : print ("iLove you") 13. Note the usage of and (meaning both sides are true)Ten + Ten +4. Short Circuit logicGenerally speaking, the short circuit logic is worth in a logic, only the first half of the judgment, as long a

Drawing with the Turtle module in python Introduction: Turtle is a simple drawing tool. It provides a turtle that you can interpret as a robot, only to understand the limited instructions. 1. Write the following line in the header of the file, which allows us to insert Chinese in the statement #-*-Coding:utf-8-*- 2.

) 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

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;

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

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

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 "#

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) = =

=input (' Cishushaoleyici,%s,chongxinshuru '%ci)Small Turtle Code:Count = 3password = ' fishc.com ' while count: passwd = input (' Please enter password: ') if passwd = = password: print (' Password is correct, Enter program ... ') Break elif ' * ' in passwd: print (' Password cannot contain ' * ')! You also have ', count, ' Chance! ', end= ') continue else: print (' Password input error! You also have ', count-

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