flask

PyCharm连接linux服务器,且每次按Ctrl+S后就自动同步代码:
 
①tools:Deployment→ Configuration:+→比如hello, SFTP;
②选项卡 Connectionhost如http://httpbin.org, User name保持默认的root, Password如1~6;③选项卡 MappingsLocalPath填入要上传的项目文件夹,后俩 path都填/;
④tools:Deployment→ OptionsUpload下拉框选择On…Ctrl+S
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一句代码搭建服务器:
 
①目标文件夹如www下进入cmd→ python -m http.server --cgi 7788;
②同网段的电脑用浏览器输入本机IP(可ipconfig查询):7788,即可查看www目录结构(若有 index.html文件,则默认打开它)。若上句代码用的是默认端口80,则浏览器端可不写【:80】。
③若www内有 cgi-bin文件夹,其内有Python文件如test.py,用浏览器如本机的输入网址http://localhost:7788/cgi-bin/test.py,可运行此Python文件。
 
test.py的内容:
html='''
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset=" gb2312">
    <title>服务器</title>
</head>
<body>
<h1>hello,世界</h1>
</body>
</html>
'''
print(html)
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flask之签名设计:
 
flask之签名设计.py:
 
import requests
from bs4 import BeautifulSoup
from flask import Flask,render_template,request
 
indexUrl='http://www.uustv.com/'
app = Flask(__name__)
 
@app.route('/',methods=['GET','POST'])
def index():
    if request.method=='GET':
        return render_template('index之签名设计.html')
    word=request.form.get('word')
    sizes=request.form.get('sizes')
    fonts=request.form.get('fonts')
    fontcolor=request.form.get('fontcolor')
    data=dict(word=word,sizes=sizes,fonts=fonts,fontcolor=fontcolor)
    html=requests.post(indexUrl,data=data).text
    soup=BeautifulSoup(html,'lxml')
    imgUrl=indexUrl+soup.select('.tu > img') [0]['src']
    context=dict(imgUrl=imgUrl,word=word,fonts=fonts)
    return render_template('index之签名设计.html', **context)
 
if __name__ == '__main__':
    app.run(debug=True,port=80)
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注:早期我用某浪写blog,那里不支持书写html格式,故把半角的<替换为了全角的<
 
templates文件夹下的——index之签名设计.html:
 
<!DOCTYPE html><html lang="en">
<head><meta charset="UTF-8"><title>签名设计</title></head>
<body><div style=" text-align:center; line-height:200px">
<form method="post">
    输入名字:<input type="word" name="word" value="{{ word |default('') }}">
    <select name="sizes" style="display:none;"><option value="60">60</option></select>
    样式:<select name="fonts" id="fonts">
        <option value="jfcs.ttf">个性签</option>
        <option value="bzcs.ttf" >潇洒签</option>
        <option value="zql.ttf" >商务签</option>
        <option value="yqk.ttf" >可爱签</option>
    </select>
    <script>$("#fonts option[text='可爱签']").attr("selected", true);</script>
    <script>$("#fonts").val("{{ fonts|default("yqk.ttf") }}");</script>
 
    <input name="fontcolor" value="#000000" style="display:none;">
    <input type="submit" value="设计" />
</form>
<img src="{{ imgUrl |default('http://www.uustv.com/1.gif ') }}">
</div></body>
</html>
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flask之酷我音乐:
 
flask之酷我音乐.py:
 
import requests
from fake_useragent import UserAgent
 
def downLoadKuwo(url):
    musicID=url.split('?')[0].split('/')[-1]
    h={'User-Agent':UserAgent().random}
    return requests.get(f'http://antiserver.kuwo.cn/anti.s?format=aac|mp3\
    &rid=MUSIC_{musicID}&type=convert_url&response=res',headers=h) .url
 
from flask import Flask,render_template,request,redirect
 
app = Flask(__name__)
 
@app.route('/',methods=['GET','POST'])
def index():
    if request.method=='GET':
        return render_template('flask之酷我音乐.html')
    url=request. form[' url']
    if not url:
        return '需要先填写url,才能下载哦'
    downUrl=downLoadKuwo(url)
    if not downUrl:
        return '输入的载网址不对,应形如:www.kuwo.cn/yinyue/97881'
    return  redirect(downUrl)
 
if __name__ == '__main__':
    app.run(debug=True) #host=' 0.0.0.0', port =5001
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templates文件夹下的——flask之酷我音乐.html:(body中的部分)
 
<form action="/" method=" post">
    搜索格式:来自百度,如:http://bd.kuwo.cn/yinyue/7746750<br>
    或直接在酷我搜索的,如:www.kuwo.cn/yinyue/97881<br>
    <br>
    <input type="text" name=" url" style="width: 400px" >
    <input type="submit" value="百度一下">
</form>
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把【斗图啦】的图片展示在自己的网站上:
 
1、把图片数据爬到mySql数据库:爬虫.py
 
import requests,re,pymysql
from fake_useragent import UserAgent
 
conn=pymysql.connect(host='localhost',port=3306,user='斗图啦',password='',
            db='斗图啦', charset='utf8')
cur=conn.cursor()
 
reg=re.compile('data-original="(.*?)".*?alt="(.*?)"',re.S)
for page in range(1,1084):
    print('正在下载第%s页' %page)
    url='http://www.doutula.com/photo/list/?page=%s' %page
    h={'User-Agent':UserAgent ().random}
    response=requests.get(url,headers=h).text
    results=reg.findall(response)
    for image in results:
        if len(image[1])<50:    #字太多的图不要
            cur.execute('insert into image(name,imageUrl) values( "%s ", "%s ")' %(image[::-1]))
            conn.commit()
cur.close()
conn.close()
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2、flask之斗图啦.py:
 
from flask import Flask,request,render_template
import pymysql,random
 
app = Flask(__name__)
 
@app.route('/')
def index():
    return render_template('index之斗图啦.html')
 
@app.route('/search')
def search():
    kw=request. args[' kw']   #取 PostData网址?后某参数的值, POST用form, GET用args
    count=request.args[' count']
    #SQL语句中, likeregexp_.%.*
    #查询的多行记录:django是[{},{}];flask默认却是[(),()],不方便html调用,连库时要改cursorclass
    # cur.execute('select * from image where name  like " %{} %" limit 1000'.format(kw))
    cur.execute('select * from image where name  regexp " .*%s .*" limit 1000' %kw)
    data=cur. fetchmany( int(count))
    random.shuffle(data)
    return render_template('index之斗图啦.html', images=data)
 
if __name__ == '__main__':
    conn = pymysql.connect(host='localhost', port=3306, user='斗图啦', password='',
                           db='斗图啦', charset='utf8',cursorclass=pymysql.cursors. DictCursor)
    cur = conn.cursor()
    app.run(debug=True)
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3、index之斗图啦.html:(body中的部分)
 
<form action="/search" method=" get">
    搜索内容:<input type="text" name=" kw" style="width: 240px"><br>
    展示数量:<input type="text" name=" count" value="10">
    <input type="submit" value="查询">
</form>
{% for image in  images %}
    <img src="{{image .imageUrl}}" alt="{{image .name}}"> <!--改为 DictCursor的目的所在-->
{% endfor %}
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制作名片二维码:
flask之名片二维码.py,文件夹templates和static,都在同一目录下
 
1、flask之名片二维码.py:
 
from flask import Flask,request,render_template
import qrcode
 
def code(form):
    t=form['name'],form.get('company'),form.get('title'),form.get('address'),\
       form.get('mobile'),form.get('email'),form.get('url'),form.get('note')
    qr=qrcode.QRCode(version=1,box_size=4,border=2,
                     error_correction=qrcode.ERROR_CORRECT_Q)   #容错范围25%
    qr.add_data('''BEGIN:VCARD\nVERSION:3.0\n
    FN:{}\nORG:{}\n
    TITLE:{}\nADD;WORK:{}\n
    TEL;WORK:{}\nEMAIL;WORK:{}\n
    URL:{}\nNOTE:{}\n
    END:VCARD'''.format( *t))
    path='static/CardImg/%s.png' %','.join(t[:4])   #取前4条做二维码图片名
    qr.make_image().save(path)
     return path
 
app = Flask(__name__)
 
@app.route('/',methods=['GET','POST'])
def index():
    if request.method =='GET':
        return render_template('index之名片二维码.html')
    form=request.form   #若取Get请求的各参数,则是request.args
    path=code(form)
    context={ ' path ':path,' info':path.split('/')[-1]}
    return  render_template('index之名片二维码.html', **context)
 
if __name__ == '__main__':
    app.run(debug=True,host='127.0.0.1',port=5000)
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2、index之名片二维码.html:(body中的部分)
 
<form action="/" method="post">
    姓名:<input type="text" name="name" style="width: 150px">
    公司:<input type="text" name="company" style="width: 150px"><br>
    职位:<input type="text" name="title" style="width: 150px">
    地址:<input type="text" name="address" style="width: 150px"><br>
    手机:<input type="text" name="mobile" style="width: 150px">
    邮箱:<input type="text" name="email" style="width: 150px"><br>
    主页:<input type="text" name="url" style="width: 150px">
    备注:<input type="text" name="note" style="width: 150px"><br>
    <input type="submit" value="生成二维码"><br>
</form>
<img src="{{ path}}" alt="{{ info}}">
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转自:潭州学院李天强
 
二维码:
 
from flask import Flask,request,render_template
import qrcode,time
 
app=Flask(__name__,template_folder=r'E:\pTest\templates')
 
def codeUrl(img):
    # 图片等资源的路径要以static开头,新生成文件所在的各层文件夹要提前建好
    path=' static /CodeImg/%s.png' %time.time()
    img.save(path)
    return render_template('img.html',codeImg=path)
 
@app.route('/hello')
def chengy():
    return 'hello world'
 
@app.route('/')
def index():
    return render_template('url.html')
 
@app.route('/url',methods=['Get','Post'])
def url():
    if request.method=='GET':   #用了==,则全部大写
        return '当前为GET请求'
    httpUrl=request. form.get('text')    #Post请求用form方法,Get用args
    img=qrcode.make(httpUrl)
    return codeUrl(img) #此处也要有return:return render_template……
 
@app.route('/text',methods=['Get','Post'])
def text():
    if request.method=='GET':
        return render_template('text.html')
    text=request.form.get('text')
    if len(text)<=1108:
        img=qrcode.make(text)
        return codeUrl(img)
    txt=' static /codeFile/%s.txt' %time.time()
    with open(txt,'w',encoding='utf-8') as f:
        f.write(text)
    img=qrcode.make('http://127.0.0.1:5000/%s' %txt)
    return codeUrl(img)
 
if __name__ == '__main__':
    app.debug=True
    app.run()
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templates下的3个html模板:
 
1、url.html:

<!DOCTYPE html><html lang="en">
<head><meta charset="UTF-8"><title>网址生成二维码</title></head>
<body><form action="/url" method="post">
    url:<input type="text" name="text" value="https://www.x.com/" style="width: 240px">
    <input type="submit" value="生成">
</form></body>
</html>
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2、text.html:

<!DOCTYPE html><html lang="en">
<head><meta charset="UTF-8"><title>文字生成二维码</title></head>
<body><form action="/text" method="post">
    请输入文字:<textarea name="text" id="" cols="30" rows="10"></textarea>
    <input type="submit" value="生成">
</form></body>
</html>
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3、img.html:
 
<!DOCTYPE html><html lang="en">
<head><meta charset="UTF-8"><title>二维码图片</title></head>
<body><img src="{{codeImg}}" alt=""></body>
</html>
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网盘:
 
网页端的网盘.py:
 
from flask import Flask,render_template,request
 
app=Flask(__name__)
 
@app.route('/')
def index():
    context={' name':'上传文件'}
    return render_template('index.html', **context)
 
@app.route('/upload',methods=['POST'])
def upload():
    file=request.files.get(' file')
    if not file:
        return '请先选择文件再上传'
    file.save('static/%s' %file.filename)   #static是根目录,前面不能加/
    return 'http://127.0.0.1:5000/static/%s' %file.filename
 
if __name__ == '__main__':
    app.run(debug=True)
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index.html:(body中的部分)
 
<form action="/upload" method="post" enctype="multipart/form-data">
    <input type="file" name=" file">
    <input type="submit" value="{{ name}}">
</form>
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app客户端的网盘.py:
 
from tkinter import *
from tkinter.filedialog import *
import requests,urllib
 
def upload():
    filename= askopenfilename(title='选择文件')
    fileUpload=open(filename,'rb').read()
    #复制F12看到的data,存放二进制数据的俩空行也不能省略
    data='''------WebKitFormBoundarysGPHg93Da3yvEPAa
Content-Disposition: form-data; name="file"; filename="%s"
Content-Type: application/octet-stream
 
[file]
------WebKitFormBoundarysGPHg93Da3yvEPAa--''' %filename.split('/')[-1]
    data= bytes(data .encode()).replace( bytes( b' [file]'),fileUpload)
    headers={'Content-Type':'multipart/form-data; boundary=----WebKitFormBoundarysGPHg93Da3yvEPAa'}
    result=requests.post('http://127.0.0.1:5000/upload',headers=headers,data=data).content
    ent.delete(0,END)   #清空输入框,防止在原文末尾追加
    ent.insert(0,result)
 
def download():
    urllib. request.urlretrieve(ent.get(),asksaveasfilename())
    root.quit()
 
root=Tk()
root.title('网盘')
root.geometry('+800+400')   #表示窗体大小的500x600,用的小写英文字母x,不是中文乘号
ent=Entry(root,width=50)
ent.grid()
btnUpload=Button(root,text='    上    传    ',command=upload)
btnUpload.grid()
btnDownload=Button(root,text='    下    载    ',command=download)
btnDownload.grid()
root.mainloop()
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微信公众号的二次开发:
网友给你的微信公号发个照片,就自动对其回复3样信息——性别、年龄、微笑指数
 
faceRecognition.py:
 
import requests
from fake_useragent import UserAgent
 
def getFaceInfo(image_url):
    h={'User-Agent':UserAgent().random}
    url='https://api-cn.faceplusplus.com/facepp/v3/detect'
    #copy自一网友的face++账号的api_key和api_secret,有效期大概半年
    data={'api_key':'RU8VkInUd4zpcCo2GbKxPz90rPoaY5O0',
          'api_secret':'01YadiHNX_Fpqw6saBYa2POD6ozL6gWu',
          'image_url':image_url,
          'return_attributes':'gender,age,smiling'}
    r=requests.post(url,data,headers=h).json()['faces'][0]['attributes']
    gender=r['gender']['value'];age=r['age']['value'];smile=r['smile']['value']
    return gender,age,smile
 
if __name__ == '__main__':
    print(getFaceInfo('http://img1.gtimg.com/ent/pics/hv1/205/194/2126/138292825.jpg'))
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微信人脸识别.py:
 
from faceRecognition import getFaceInfo
from xml.etree import ElementTree as et
from flask import Flask,request,render_template
 
app = Flask(__name__)
 
@app.route('/')
def hello_world():
    return 'Hello World!'
 
@app.route(' /wx',methods=['GET','POST'])
def winxin():   #强子院长在其微信公号所关联的网址:www.litianqiang.com /wx
    if request.method=='GET':
        return request .args['echostr']   #get请求取网址尾的参数的值
    data=request .get_data() #取正文;此处是网民发了图,微信转义后再post来的 图片消息的xml
    xml=et.fromstring(data)
    ToUserName=xml.findtext('.//ToUserName')    #To…指你的微信公号,From则是网民个人号
    FromUserName=xml.findtext('.//FromUserName')    #xpath定位,或者用正则
    CreateTime=xml.findtext('.//CreateTime')
    PicUrl=xml.findtext('.//PicUrl')    #网民发来的xml是 image消息,公号返回他的xml是 text消息
    gender,age,smile=getFaceInfo(PicUrl)
    Content=f'人脸信息如下:\n性别:{gender}\n年龄:{age}\n微笑指数:{smile}'
    context={'FromUserName':FromUserName,'ToUserName':ToUserName,
             'CreateTime':CreateTime,'Content':Content}
    return render_template('index之微信人脸识别.html', **context)
 
if __name__ == '__main__':
    app.run(debug=True,host=' 0.0.0.0',port=2346)    #用域名而非IP访问,改host为全0
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templates文件夹下的index之微信人脸识别.html
 
<xml>
    < ToUserName><![CDATA[{{  FromUserName }}]]></ToUserName>
    < FromUserName><![CDATA[{{  ToUserName }}]]></FromUserName>
    <CreateTime>{{ CreateTime }}</CreateTime>
    <MsgType><![CDATA[ text]]></MsgType>
    <Content><![CDATA[{{ Content }}]]></Content>
</xml>

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