python的小作业

目录

python安装

2.打印0-100，遇到19的时候跳出循环  

3.只打印90以内的奇数

4.对发送邮件代码进行修改，换成自己的邮箱并截图保存。

5.对指导书中海龟画图和TCP/UDP的案例进行学习并运行结果。

python小项目

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python安装

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1，

def index_str(L,str):
    for i in L:
        for l in i :
            if(l == str):
                return l



if __name__ == '__main__':
    L = [
        ['Apple', 'Google', 'Microsoft'], ['Java', 'Python', 'Ruby', 'PHP'], ['Adam', 'Bart', 'Lisa']
    ]
    # 方法一
    for i in L:
        for l in i :
            if(l == 'Apple'):
                print(l)
            elif(l == 'Python'):
                print(l)
            elif(l =='Lisa'):
                print(l)


    # 方法二
    l = len(L)
    str = len(L[0])
    for i in range(l):
        for j in range(str):
            # print(L[i][j])
            if(i==0 and j== 0 ):
                print(L[i][j])
            elif(i==1 and j== 1 ):
                print(L[i][j])
            elif (i == 2 and j == 2):
                print(L[i][j])


    #方法三
    s1=index_str(L,'Apple')
    print(s1)
    s2 = index_str(L, 'Python')
    print(s2)
    s3 = index_str(L, 'Lisa')
    print(s3)

2.打印0-100，遇到19的时候跳出循环  

if __name__ == '__main__':
    num = 0 ;
    while(num < 100):
        print(num)
        num+=1
        if(num >= 20):
            break;

3.只打印90以内的奇数

def odd_number(n):
    if( n % 2 != 0):
        return n

# 不能num%2 == 0 奇数
if __name__ == '__main__':

    # 方法一
    for i in range(1,90,2):
        print(i)

    #方法二
    num = 1 ;
    while(num < 91):
        if(num % 2 != 0):
            print(num)
        num+=1

    #方法三
    for i in range(90):
        num = odd_number(i)
        if num != None:
            print(num)

4.对发送邮件代码进行修改，换成自己的邮箱并截图保存。

先开启邮箱中的设置

 点击账户

 开启pop3/SMTP与IMAP/SMTP哦（很重要！！！）

 账户是qq号或者是邮箱号，但是密码是授权码（很重要！！！）

 

 

import smtplib
from email.mime.text import MIMEText
email = 'smtp.qq.com'
from_addresses = '发送者@qq.com'
codes = 'xxxxxxxx'
to_addresses = '接收者@qq.com'

msg = MIMEText('连心爱的女人都留不住，python再吊有什么用！','plain','utf-8')



server = smtplib.SMTP_SSL(email)
server.connect(email,465)
server.login(from_addresses,codes )
server.sendmail(from_addresses,to_addresses,msg.as_string())

server.quit()

 

5.对指导书中海龟画图和TCP/UDP的案例进行学习并运行结果。

from turtle import *

# 设置色彩模式是RGB:
colormode(255)

lt(90)

lv = 14
l = 120
s = 45

width(lv)

# 初始化RGB颜色:
r = 0
g = 0
b = 0
pencolor(r, g, b)

penup()
bk(l)
pendown()
fd(l)

def draw_tree(l, level):
    global r, g, b
    # save the current pen width
    w = width()

    # narrow the pen width
    width(w * 3.0 / 4.0)
    # set color:
    r = r + 1
    g = g + 2
    b = b + 3
    pencolor(r % 200, g % 200, b % 200)

    l = 3.0 / 4.0 * l

    lt(s)
    fd(l)

    if level < lv:
        draw_tree(l, level + 1)
    bk(l)
    rt(2 * s)
    fd(l)

    if level < lv:
        draw_tree(l, level + 1)
    bk(l)
    lt(s)

    # restore the previous pen width
    width(w)

speed("fastest")

draw_tree(l, 4)

done()

 

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import socket

# 创建一个socket:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 建立连接:
s.connect(('www.sina.com.cn', 80))

# 发送数据:
s.send(b'GET / HTTP/1.1\r\nHost: www.sina.com.cn\r\nConnection: close\r\n\r\n')

# 接收数据:
buffer = []
while True:
    # 每次最多接收1k字节:
    d = s.recv(1024)
    if d:
        buffer.append(d)
    else:
        break

data = b''.join(buffer)

# 关闭连接:
s.close()

header, html = data.split(b'\r\n\r\n', 1)
print(header.decode('utf-8'))

# 把接收的数据写入文件:
with open('sina.html', 'wb') as f:
    f.write(html)

 

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import socket

# 创建一个socket:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 建立连接:
s.connect(('www.sina.com.cn', 80))

# 发送数据:
s.send(b'GET / HTTP/1.1\r\nHost: www.sina.com.cn\r\nConnection: close\r\n\r\n')

# 接收数据:
buffer = []
while True:
    # 每次最多接收1k字节:
    d = s.recv(1024)
    if d:
        buffer.append(d)
    else:
        break

data = b''.join(buffer)

# 关闭连接:
s.close()

header, html = data.split(b'\r\n\r\n', 1)
print(header.decode('utf-8'))

# 把接收的数据写入文件:
with open('sina.html', 'wb') as f:
    f.write(html)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 绑定端口:
s.bind(('127.0.0.1', 9999))

print('Bind UDP on 9999...')

while True:
    # 接收数据:
    data, addr = s.recvfrom(1024)
    print('Received from %s:%s.' % addr)
    reply = 'Hello, %s!' % data.decode('utf-8')
    s.sendto(reply.encode('utf-8'), addr)

现象

 

 

 

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