首页 Python

# 第一次作业

# 01-sum.py

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n = int(input('请输入一个整数 : '))
sum = 0
for i in range(n):
    sum += i
print('1~%d的求和结果为%d' % (n, sum))

image-20220311232309939

# 02-sort.py

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l = []
for i in range(3):
    x = int(input('请输入整数 : '))
    l.append(x)
l.sort()
print(l)

image-20220311232513756

# 03-99list.py

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for i in range(1, 10):
    for j in range(1, i + 1):
        print('%d * %d = %-2d' % (j, i, i * j), end=' ')
    print('')
image-20220311232658759

# 04-pentagrams.py

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import turtle as t


def draw_fiveStars(len):
    count = 1
    while count <= 5:
        t.forward(len)
        t.right(144)
        count += 1
    len += 10
    if len <= 100:
        draw_fiveStars(len)


def main():
    t.penup()
    t.backward(100)
    t.pendown()
    t.pensize(2)
    t.pencolor('red')
    segment = 50
    draw_fiveStars(segment)
    t.exitonclick()


if __name__ == '__main__':
    main()

image-20220311233156163

# 5-fiboSeq.py

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l = [1, 2]
n = int(input('斐波那契数列长度 : '))
while len(l) < n:
    l.append(l[len(l) - 1] + l[len(l) - 2])
print(l)
image-20220312122548101

# 6-finalNum.py

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for i in range(2, 1001):
    k = []
    s = i
    count = 0
    sum = 0
    for j in range(1, i):
        if i % j == 0:
            k.append(j)
            count += 1
            sum += j
    if sum == i:
        print(i)
image-20220312122635192

# 7-age.py

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def age(n):
    if n == 1:
        c = 10
    else:
        c = age(n - 1) + 2
    return c


print(age(5))
image-20220312122710520

# 8-printList.py

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ls = ['one', 'two', 'three']
for i in ls[::-1]:
    print(i)
image-20220312122800104

# 9-what.py

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import turtle
ninja = turtle.Turtle()
ninja.speed(10)
for i in range(180):
    ninja.forward(100)
    ninja.right(30)
    ninja.forward(20)
    ninja.left(60)
    ninja.forward(50)
    ninja.right(30)
    ninja.penup()
    ninja.setposition(0, 0)
    ninja.pendown()
    ninja.right(2)
turtle.done()

image-20220312123019467

# 10-drawClock.py

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from turtle import *
from datetime import *


def Skip(step):
    penup()
    forward(step)
    pendown()


# 建立钟表的外框
def setupClock(radius):
    reset()
    pensize(7)
    for i in range(60):
        Skip(radius)
        if i % 5 == 0:
            forward(20)
            Skip(-radius - 20)
        else:
            dot(5)
            Skip(-radius)
        right(6)


# 注册 turtle 形状，建立名字为 name 的形状
def makeHand(name, length):
    reset()
    Skip(-0.1 * length)
    # 开始记录多边形的顶点
    begin_poly()
    forward(1.1 * length)
    # 停止记录多边形的顶点,并与第一个顶点相连
    end_poly()
    # 返回最后记录的多边形
    handForm = get_poly()
    # 注册形状，命名为 name
    register_shape(name, handForm)


def init():
    global secHand, minHand, hurHand, printer
    # 重置 turtle 指针向北
    mode("logo")
    secHand = Turtle()
    makeHand("secHand", 125)
    secHand.shape("secHand")
    minHand = Turtle()
    makeHand("minHand", 130)
    minHand.shape("minHand")
    hurHand = Turtle()
    makeHand("hurHand", 90)
    hurHand.shape("hurHand")
    # shapesize 第一个参数没看到什么用，第二个参数表示几倍的长度，第 3 个参数表示 3倍的宽度
    # speed(0)是最快
    for hand in secHand, minHand, hurHand:
        hand.shapesize(1, 1, 3)
        hand.speed(0)
        # 建立并输出文字的 turtle 对象，printer 对象只是显示文字不显示路径，所以一直是penup 和 hideturtle
        printer = Turtle()
        printer.hideturtle()
        printer.penup()


def Week(t):
    week = ["星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期七"]
    return week[t.weekday()]


def Day(t):
    return "%s %d %d" % (t.year, t.month, t.day)


def Tick():
    t = datetime.today()
    second = t.second + t.microsecond * 0.000001
    minute = t.minute + t.second / 60.0
    hour = t.hour + t.minute / 60.0
    secHand.setheading(second * 6)
    minHand.setheading(minute * 6)
    hurHand.setheading(hour * 30)
    tracer(False)
    printer.fd(70)
    printer.write(Week(t), align="center", font=("Courier", 14, "bold"))
    printer.back(130)
    printer.write(Day(t), align="center", font=("Courier", 14, "bold"))
    printer.home()
    tracer(True)
    ontimer(Tick, 100)  # 100ms 后继续调用 Tick


def main():
    # 关闭动画
    tracer(False)
    init()
    setupClock(200)
    # 开启动画
    tracer(True)
    Tick()
    done()


main()

image-20220312123415620

# 11-drawHeart.py

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from turtle import *
pensize(1)
pencolor('red')
fillcolor('pink')
speed(5)
up()
goto(-30, 100)
down()
begin_fill()
left(90)
circle(120,180)
circle(360,70)
left(38)
circle(360,70)
circle(120,180)
end_fill()
up()
goto(-100,-100)
down()
image-20220312123536163

# 12-drawFx.py

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import numpy as np
import matplotlib.pyplot as plt
X = np.linspace(-4, 4, 1024)
Y = .25 * (X + 4.) * (X + 1.) * (X - 2.)
plt.title('$f(x)=\\frac{1}{4}(x+4)(x+1)(x-2)$')
plt.plot(X, Y, c = 'g')
plt.show()
image-20220312124638549

# 13-randomHearts.py

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import turtle as t
import random as r


def randomcolor():
    color = (r.random(), r.random(), r.random())
    return color


def pink():
    color = (1, r.random(), 1)
    return color


def randomrange(min, max):
    return min + (max - min) * r.random()


def moveto(x, y):
    t.penup()
    t.goto(x, y)
    t.pendown()


def heart(r, a):
    factor = 180
    t.seth(a)
    t.circle(-r, factor)
    t.fd(2 * r)
    t.right(90)
    t.fd(2 * r)
    t.circle(-r, factor)


# set canvas dimension
t.setup(800, 800, 200, 200)
t.speed(9)
t.pensize(1)
t.pencolor(randomcolor())
t.fillcolor(randomcolor())
t.penup()

for i in range(20):
    t.goto(randomrange(-300, 300), randomrange(-300, 300))
    t.begin_fill()
    t.fillcolor(pink())
    heart(randomrange(10, 50), randomrange(0, 90))
    t.end_fill()
moveto(400, -400)

image-20220312124846375
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