# Python draws a beautiful cherry tree (different kinds of cherry + Rose + Christmas tree)

There are many tree diagrams drawn in Python (most of them are turnle libraries), which is very beautiful. I sorted them out and selected some code that I think is good to share with you (I have tested these, and they can be generated indeed)
one cherry tree

• Dynamic Cherry Blossom generation
Rendering (this is dynamic):

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• Implementation code

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`import turtle as Timport randomimport time# Painting the trunk of Cherry Blossom(60,t)def Tree(branch, t):    time.sleep(0.0005)    if branch > 3:        if 8 <= branch <= 12:            if random.randint(0, 2) == 0:                t.color('snow')  # white            else:                t.color('lightcoral')  # Pale coral            t.pensize(branch / 3)        elif branch < 8:            if random.randint(0, 1) == 0:                t.color('snow')            else:                t.color('lightcoral')  # Pale coral            t.pensize(branch / 2)        else:            t.color('sienna')  # Ochre(zhě)colour            t.pensize(branch / 10)  # 6        t.forward(branch)        a = 1.5 * random.random()        t.right(20 * a)        b = 1.5 * random.random()        Tree(branch - 10 * b, t)        t.left(40 * a)        Tree(branch - 10 * b, t)        t.right(20 * a)        t.up()        t.backward(branch)        t.down()# Fallen petalsdef Petal(m, t):    for i in range(m):        a = 200 - 400 * random.random()        b = 10 - 20 * random.random()        t.up()        t.forward(b)        t.left(90)        t.forward(a)        t.down()        t.color('lightcoral')  # Pale coral        t.circle(1)        t.up()        t.backward(a)        t.right(90)        t.backward(b)# Drawing areat = T.Turtle()# canvas sizew = T.Screen()t.hideturtle()  # Hidden brusht.getscreen().tracer(5, 0)w.screensize(bg='wheat')  # wheat Wheatt.left(90)t.up()t.backward(150)t.down()t.color('sienna')# Painting the trunk of Cherry BlossomTree(60, t)# Fallen petalsPetal(200, t)w.exitonclick()`
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• Falling effect
Design sketch:
Code:

`from turtle import *from random import *from math import *def tree(n,l):    pd()    #Shadow effect    t = cos(radians(heading()+45))/8+0.25    pencolor(t,t,t)    pensize(n/3)    forward(l)    if n>0:        b = random()*15+10 ා right branch deflection angle        c = random()*15+10 × left branch deflection angle        d = l*(random()*0.25+0.7) × length of next branch        #Turn right at an angle and draw the right branch        right(b)        tree(n-1,d)        #Turn left at an angle and draw the left branch        left(b+c)        tree(n-1,d)        Turn back        right(c)    else:        To draw leaves        right(90)        n=cos(radians(heading()-45))/4+0.5        pencolor(n,n*0.8,n*0.8)        circle(3)        left(90)        #Add 0.3 times of fallen leaves        if(random()>0.7):            pu()            Falling down            t = heading()            an = -40 +random()*40            setheading(an)            dis = int(800*random()*0.5 + 400*random()*0.3 + 200*random()*0.2)            forward(dis)            setheading(t)            To draw leaves            pd()            right(90)            n = cos(radians(heading()-45))/4+0.5            pencolor(n*0.5+0.5,0.4+n*0.4,0.4+n*0.4)            circle(2)            left(90)            pu()            The return of Qi            t=heading()            setheading(an)            backward(dis)            setheading(t)    pu()    backward(l)bgcolor(0.5,0.5,0.5) × background colorht(), hiddenspeed(0) × speed 1-10 progressive, 0 fastesttracer(0,0)pu()backward(100)left(90) × left turn 90 degreespu()backward(300)Tree (12100) - recursion layer 7done()`
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• Dark effect
Effect:

Code

`from turtle import *from random import *from math import *def tree(n, l):    pd()    t = cos(radians(heading() + 45)) / 8 + 0.25    pencolor(t, t, t)    pensize(n / 4)    forward(l)    if n > 0:        b = random() * 15 + 10        c = random() * 15 + 10        d = l * (random() * 0.35 + 0.6)        right(b)        tree(n - 1, d)        left(b + c)        tree(n - 1, d)        right(c)    else:        right(90)        n = cos(radians(heading() - 45)) / 4 + 0.5        pencolor(n, n, n)        circle(2)        left(90)    pu()    backward(l)bgcolor(0.5, 0.5, 0.5)ht()speed(0)tracer(0, 0)left(90)pu()backward(300)tree(13, 100)done()`
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two roses
Effect (with painting process)
Code

`from turtle import *import timesetup(1000,800,0,0)speed(0)penup()seth(90)fd(340)seth(0)pendown()speed(5)begin_fill()fillcolor('red')circle(50,30)for i in range(10):    fd(1)    left(10)circle(40,40)for i in range(6):    fd(1)    left(3)circle(80,40)for i in range(20):    fd(0.5)    left(5)circle(80,45)for i in range(10):    fd(2)    left(1)circle(80,25)for i in range(20):    fd(1)    left(4)circle(50,50)time.sleep(0.1)circle(120,55)speed(0)seth(-90)fd(70)right(150)fd(20)left(140)circle(140,90)left(30)circle(160,100)left(130)fd(25)penup()right(150)circle(40,80)pendown()left(115)fd(60)penup()left(180)fd(60)pendown()end_fill()right(120)circle(-50,50)circle(-20,90)speed(1)fd(75)speed(0)circle(90,110)penup()left(162)fd(185)left(170)pendown()circle(200,10)circle(100,40)circle(-52,115)left(20)circle(100,20)circle(300,20)speed(1)fd(250)penup()speed(0)left(180)fd(250)circle(-300,7)right(80)circle(200,5)pendown()left(60)begin_fill()fillcolor('green')circle(-80,100)right(90)fd(10)left(20)circle(-63,127)end_fill()penup()left(50)fd(20)left(180)pendown()circle(200,25)penup()right(150)fd(180)right(40)pendown()begin_fill()fillcolor('green')circle(-100,80)right(150)fd(10)left(60)circle(-80,98)end_fill()penup()left(60)fd(13)left(180)pendown()speed(1)circle(-200,23)exitonclick()`
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three Christmas tree

• Christmas tree (dynamic generation effect)

Code:

`from turtle import *import randomimport timen = 100.0speed("fastest")screensize(bg='seashell')left(90)forward(3*n)color("orange", "yellow")begin_fill()left(126)for i in range(5):    forward(n/5)    right(144)    forward(n/5)    left(72)end_fill()right(126)color("dark green")backward(n*4.8)def tree(d, s):    if d <= 0: return    forward(s)    tree(d-1, s*.8)    right(120)    tree(d-3, s*.5)    right(120)    tree(d-3, s*.5)    right(120)    backward(s)tree(15, n)backward(n/2)for i in range(200):    a = 200 - 400 * random.random()    b = 10 - 20 * random.random()    up()    forward(b)    left(90)    forward(a)    down()    if random.randint(0, 1) == 0:            color('tomato')    else:        color('wheat')    circle(2)    up()    backward(a)    right(90)    backward(b)time.sleep(60)`

To be continued!

Tags: Python

Posted on Tue, 03 Dec 2019 11:00:11 -0500 by dbradbury