I am trying to make a standalone GUI application that displays real time price data from a stock price API. Due to the API, it is much easier to make this program Python based.
The stock data from a domain of stocks is streamed from an API and stored at a set interval (atm around 500ms).
My aim is to insert the price information for the stock, when that stock makes a new high or a new low. Additionally the rows will need to be coloured different colours based on the price (red/blue)
E.g:
Time | Ticker | Price
11:00:00 | ABCD | 109.50
11:00:50 | WXYZ | 123.30
11:01:00 | ABCD | 110.01
11:01:50 | EFGH | 50.38
As you can imagine, very quickly this table will fill up, and it will be running all day during trading hours, so will need to keep up with constant additions.
At the moment, I've been looking at using Tkinter, but I am inexperienced with GUI related programming, so I'm not sure if it is capable of achieving what I would like. I have made a start with dummy data, and a worst case scenario (adding every 100ms). It already seems fairly sluggish, so I'm not sure if this is the way to go, particularly with the scrollbar workaround required (Adding a scrollbar to a group of widgets in Tkinter) :
import tkinter as tk
import tkinter.ttk as ttk
class StockDisplay(tk.Frame):
def __init__(self):
tk.Frame.__init__(self)
self.main_frame = tk.Frame()
self.main_frame.bind("<Configure>", lambda e: self.my_canvas.configure(scrollregion=self.my_canvas.bbox("all")))
self.main_frame.pack(fill=tk.BOTH, expand=1)
self.my_canvas = tk.Canvas(self.main_frame)
self.my_canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=1)
self.my_scrollbar = ttk.Scrollbar(self.main_frame, orient=tk.VERTICAL, command=self.my_canvas.yview)
self.my_scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
self.my_canvas.configure(yscrollcommand=self.my_scrollbar.set)
self.second_frame = tk.Frame(self.my_canvas)
self.my_canvas.create_window((0, 0), window=self.second_frame, anchor="nw")
self.height = 0
self.init_table()
self.add_row()
def init_table(self):
tk.Label(self.second_frame, text="Time",).grid(row=self.height, column=0, padx=10)
tk.Label(self.second_frame, text="Ticker").grid(row=self.height, column=1, padx=10)
tk.Label(self.second_frame, text="Price").grid(row=self.height, column=2, padx=10)
def add_row(self):
self.height += 1
tk.Label(self.second_frame, text="Time").grid(row=self.height, column=0, padx=10)
tk.Label(self.second_frame, text="Ticker " + str(self.height)).grid(row=self.height, column=1, padx=10)
tk.Label(self.second_frame, text="Price").grid(row=self.height, column=2, padx=10)
self.reset_scrollregion()
self.after(100, self.add_row)
def reset_scrollregion(self):
self.my_canvas.configure(scrollregion=self.my_canvas.bbox("all"))
if __name__ == '__main__':
root = tk.Tk()
root.title('Tkicker')
root.geometry("500x400")
display = StockDisplay()
root.mainloop()
My questions are:
1.) Is Tkinter going to be able to acheive my goal?
a.) If yes: Is there a good/better way to allow this updating table (i/e is the grid method the best way)?
b.) If no: Is there a better GUI application that I could use to achieve this?
Any advice is very much appreciated.
Thanks!
