不少用Python（大多是turtle庫）繪制的樹圖，感覺很漂亮，我整理了一下，挑了一些我覺得不錯的代碼分享給大家（這些我都測試過，确實可以生成喔~）one 櫻花樹

另外注意：不管你是為了Python就業還是興趣愛好，記住：項目開發經驗永遠是核心，如果你缺新項目練習或者沒有python入門到高級實戰精講教程，可以關注我，後台私信我 ‘py’ 自動獲取最新python教程資料！還有老司機解答哦！

• 動态生成櫻花效果圖（這個是動态的）：​

• 實現代碼

import turtle as T import random import time # 畫櫻花的軀幹(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') # 白 else: t.color('lightcoral') # 淡珊瑚色 t.pensize(branch / 3) elif branch < 8: if random.randint(0, 1) == 0: t.color('snow') else: t.color('lightcoral') # 淡珊瑚色 t.pensize(branch / 2) else: t.color('sienna') # 赭(zhě)色 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() # 掉落的花瓣 def 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') # 淡珊瑚色 t.circle(1) t.up() t.backward(a) t.right(90) t.backward(b) # 繪圖區域 t = T.Turtle() # 畫布大小 w = T.Screen() t.hideturtle() # 隐藏畫筆 t.getscreen().tracer(5, 0) w.screensize(bg='wheat') # wheat小麥 t.left(90) t.up() t.backward(150) t.down() t.color('sienna') # 畫櫻花的軀幹 Tree(60, t) # 掉落的花瓣 Petal(200, t) w.exitonclick()

• 飄落效果效果圖：​代碼：

from turtle import * from random import * from math import * def tree(n,l): pd()#下筆 #陰影效果 t = cos(radians(heading() 45))/8 0.25 pencolor(t,t,t) pensize(n/3) forward(l)#畫樹枝 if n>0: b = random()*15 10 #右分支偏轉角度 c = random()*15 10 #左分支偏轉角度 d = l*(random()*0.25 0.7) #下一個分支的長度 #右轉一定角度,畫右分支 right(b) tree(n-1,d) #左轉一定角度，畫左分支 left(b c) tree(n-1,d) #轉回來 right(c) else: #畫葉子 right(90) n=cos(radians(heading()-45))/4 0.5 pencolor(n,n*0.8,n*0.8) circle(3) left(90) #添加0.3倍的飄落葉子 if(random()>0.7): pu() #飄落 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) #畫葉子 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() #返回 t=heading() setheading(an) backward(dis) setheading(t) pu() backward(l)#退回 bgcolor(0.5,0.5,0.5)#背景色 ht()#隐藏turtle speed(0)#速度 1-10漸進，0 最快 tracer(0,0) pu()#擡筆 backward(100) left(90)#左轉90度 pu()#擡筆 backward(300)#後退300 tree(12,100)#遞歸7層 done()

• 暗色效果效果：​代碼

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()

two 玫瑰花效果（有繪制過程）

​代碼

from turtle import * import time setup(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()

three 聖誕樹

• 聖誕樹 （動态生成效果）​代碼：

from turtle import * import random import time n = 100.0 speed("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)

未完待續！另外注意：不管你是為了Python就業還是興趣愛好，記住：項目開發經驗永遠是核心，如果你缺新項目練習或者沒有python入門到高級實戰精講教程，可以關注我，後台私信我 ‘py’ 自動獲取最新python教程資料！還有老司機解答哦！

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