zaif APIで仮想通貨BTCの価格推移をグラフ表示する。サンプルソース

グラフ表示のサンプル・pythonソース・コードです。
動作確認済です。
以下をそのまま実行して下さい。
pip install zaifapi　コマンドプロンプトにて投入する

from zaifapi import ZaifPublicApi
zaif_public = ZaifPublicApi()

import time            
import threading        
import tkinter       
import requests
import json

loop  = 1260 
hei   = 680
count = -1

root = tkinter.Tk()
root.geometry("1300x715")   
ca = tkinter.Canvas(width=loop, height=hei, bg="white")   
ca.pack()
me = tkinter.Message(root, text="銭の生る樹", font=("Times New ZRoman", 16), width=500)
me.place(x=20, y=100)
me2 = tkinter.Message(root, text="countがloopに成るとコイン価格推移グラフが表示されます", font=("Times New ZRoman", 16), width=550)
me2.place(x=20, y=130)


flag = "off"
histry1s  = []        

market = "bitflyer" 

def func1():
    global flag
    global loop
    global ca
    global count
    global loop
    global histry1s
    
    while True:
        time.sleep(0.001)

        count = count + 1

        if market == "bitflyer":
            # bitflyer
            #res = requests.get('https://api.zaif.jp/api/1/last_price/btc_jpy')
            res = requests.get('https://api.bitflyer.jp/v1/getboard?product_code=BTC_JPY')
            if res.status_code != 200:
                raise Exception('return status code is {}'.format(res.status_code))
            price = json.loads(res.text)
            graph_y = int(price["mid_price"])
        else:
            # zaif
            res = zaif_public.last_price('btc_jpy')   
            graph_y = int(res["last_price"])         

        me["text"] = "count = {}".format(count),str(graph_y)

        if count < loop:
            histry1s.append(graph_y)
        else:
            for i in range(1,loop):
                histry1s[i-1] = histry1s[i]
            histry1s[loop - 1] = graph_y
            
        max_price = int(max(histry1s)) / 100 + 10
        min_price = int(min(histry1s)) / 100 - 10
        #print("max_price = {}".format(max_price))

        hi_range = max_price - min_price
        bai = hei / hi_range

        ca.delete("all")

        index = len(histry1s)
        print("index = {}".format(index))
        bar_x = 10
        j = -1
        for i in range(loop):
            if i > loop - index:
                j = j + 1
                hi = max_price - int(histry1s[j] /100)
                bar_y = hi * bai
                ca.create_line(bar_x, bar_y, bar_x + 1, bar_y + 1, fill="black",width=2)
            bar_x = bar_x + 1
            
        if flag == "on":
            flag = "off"
            break
    print("loop end")


def btn_on2():
    global flag
    global bu2

    bu2["text"] = "ループ終了"
    flag = "on"

bu2 = tkinter.Button(root, text="ループ終了", font=("Times New ZRoman", 16), command=btn_on2)
bu2.place(x=20, y=50)

thread_1 = threading.Thread(target=func1)

thread_1.start()

root.mainloop()