从小白出发带你领略Python爬虫之美，关注微信公众号:机智出品(jizhjchupin)，免费获取源代码及实战教程
一、系统环境：
Windows7+Python3.6+Echart3
二、结果展示：
股票实时行情.gif
三、实现过程：
PART ONE：tushare数据获取sqlite存储[monitor.py]
step 1：需要的库
from sqlalchemy import create_engine
import tushare as ts
import time
import pandas as pd
step2：获取行情并存储
这里我们使用的是Tushare隔3S获取一次股票实时行情数据，并存储至sqlite。
def stoc(i):
df = ts.get_realtime_quotes('600031')
data=[i]
s1 = pd.Series(data, index=range(0,1,1))
df['id'] = s1
engine = create_engine('sqlite:///test.db', convert_unicode=True)
#追加数据到现有表
df.to_sql('tick_data',engine,if_exists='append')
i=0
while True:
stoc(i)
time.sleep(3)
i=i+1
print('insert %s datas'%i)
PART TWO：路由器[app.py]
step 1：需要的库
import sqlite3
from flask import *
import os
step 2：设置
app = Flask(__name__)
app.config['USERNAME']='finance'#账号密码
app.config['PASSWORD']='finance'
app.secret_key=os.urandom(24)
step 3：URL
@app.route('/login', methods=['GET', 'POST'])
def login():
error = None
if request.method == 'POST':
if request.form['username'] != app.config['USERNAME']:
error = 'Invalid username'
elif request.form['password'] != app.config['PASSWORD']:
error = 'Invalid password'
else:
session['logged_in'] = True
flash('You were logged in')
return redirect(url_for('index'))
return render_template('login.html', error=error)
@app.route('/logout')
def logout():
session.pop('logged_in', None)
flash('You were logged out')
return redirect(url_for('login'))
def get_db():
db = sqlite3.connect('test.db')
db.row_factory = sqlite3.Row
return db
def query_db(query, one=False):#, args=()
db = get_db()
cur = db.execute(query)#, args
db.commit()
rv = cur.fetchall()
db.close()
return (rv[0] if rv else None) if one else rv
@app.route("/", methods=["GET"])
def index():
if session.get('logged_in'):
return render_template("index.html")
else:
return redirect(url_for('login'))
@app.route("/finance", methods=["POST"])
def finance():
if request.method == "POST":
res = query_db("SELECT * FROM tick_data ")
print(int(request.form['id']))
return jsonify(time = [x[32] for x in res],
price = [x[4] for x in res]) # 返回json格式
if __name__ == "__main__":
app.run(debug=True)
PART THREE：页面[index.html]
<!DOCTYPE html>
<html style="height: 100%" lang="en">
<head>
<meta charset="utf-8">
<title>My Finance</title>
<script src="{{ url_for('static', filename='jquery-3.1.1.js') }}"></script>
<script src="{{ url_for('static', filename='echarts.js') }}"></script>
<!-- 引入 vintage 主题 -->
<script src="{{ url_for('static', filename='dark.js') }}"></script>
</head>
<body style="height: 100%; margin: 0">
<div id="main" style="height: 100%"></div>
<script type="text/javascript">
var myChart = echarts.init(document.getElementById('main'), 'dark');
myChart.setOption({
title: {
top: 5,
left: 'center',
text: 'My Finance',
textStyle: {
color: '#00FFFF',
fontSize: 18
}
},
tooltip: {
trigger: 'axis',
axisPointer: {
animation: false,
type: 'cross',
lineStyle: {
color: '#376df4',
width: 2,
opacity: 1
}
}
},
legend: {
top: 30,
left: 'center',
data:['price']
},
toolbox: {
show : true,
orient : 'vertical',
top : '35%',
right : 45,
feature : {
mark : {show: true},
dataView : {show: true, readOnly: false},
magicType : {show: true, type: ['line', 'bar']},
restore : {show: true},
saveAsImage : {show: true}
}
},
xAxis: {
data: [],
axisLine: { lineStyle: { color: '#8392A5' } }
},
yAxis: {
//maxInterval: 0.1
//interval:0.1,
min:'dataMin',
axisLine: { lineStyle: { color: '#8392A5' } }
//max:'dataMax'
//splitNumber:5
},
dataZoom: [
{
"show": true,
textStyle: {
color: '#8392A5'
},
"type": "slider",
handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
handleSize: '80%',
dataBackground: {
areaStyle: {
color: '#8392A5'
},
lineStyle: {
opacity: 0.8,
color: '#8392A5'
}
},
handleStyle: {
color: '#fff',
shadowBlur: 3,
shadowColor: 'rgba(0, 0, 0, 0.6)',
shadowOffsetX: 2,
shadowOffsetY: 2
},
"start": 50,
"end": 100,
"orient": "horizontal"
}
],
series: [{
name: 'price',
type: 'line',
//smooth:true,
sampling:'average',
areaStyle: {
normal: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
offset: 0,
color: 'rgba(0, 136, 212, 0.3)'
}, {
offset: 0.8,
color: 'rgba(0, 136, 212, 0.1)'
},{
offset: 1,
color: 'rgba(0, 136, 212, 0)'
}], false),
shadowColor: 'rgba(0, 0, 0, 0.1)',
shadowBlur: 10
}
},
itemStyle: {
normal: {
color: 'rgb(0,136,212)',
borderColor: 'rgba(0,136,212,0.2)',
borderWidth: 12
}
},
data: []
}]
});
var time = [],
price = [],
lastID = 0;
//准备好统一的 callback 函数
var update_mychart = function (data) { //data是json格式的response对象
myChart.hideLoading(); // 隐藏加载动画
dataLength = data.time.length;
if (dataLength == lastID){clearInterval(timeTicket);};//取得数据和上次长度一样停止ajax
lastID = dataLength;
time = time.slice(dataLength).concat(data.time);
price = price.slice(dataLength).concat(data.price.map(parseFloat));
// 填入数据
myChart.setOption({
xAxis: {
data: time
},
series: [{
name: 'price',
data: price
}]
})
}
myChart.showLoading(); // 首次显示加载动画
$.get('/finance').done(update_mychart);
var timeTicket = setInterval(function () {
$.post('/finance',{id: lastID}).done(update_mychart);
}, 3000);
</script>
</body>
</html>
先运行monitor.py获取一些数据，再运行app.py，然后打开http://127.0.0.1:5000，就可以看到如下界面：
Login.PNG
My Finance.PNG
源代码链接：http://pan.baidu.com/s/1eSw53we
关注微信公众号“机智出品”，回复0825，获取密码
机智出品.jpg
