Add ION feature flag

gamestonk_terminal/screener/screener_controller.py

@@ -4,6 +4,7 @@ __docformat__ = "numpy"
 import os
 import argparse
 from typing import List
+import matplotlib.pyplot as plt
 from gamestonk_terminal import feature_flags as gtff
 from gamestonk_terminal.helper_funcs import get_flair
 from gamestonk_terminal.menu import session
@@ -237,6 +238,8 @@ def menu():
             an_input = input(f"{get_flair()} (scr)> ")
 
         try:
+            plt.close("all")
+
             process_input = scr_controller.switch(an_input)
 
             if process_input is not None:

gamestonk_terminal/screener/yahoo_finance_view.py

@@ -7,7 +7,7 @@ import configparser
 import yfinance as yf
 from finvizfinance.screener import ticker
 from gamestonk_terminal.screener import finviz_view
-
+from gamestonk_terminal import feature_flags as gtff
 from gamestonk_terminal.helper_funcs import (
     parse_known_args_and_warn,
     plot_autoscale,
@@ -173,6 +173,10 @@ def historical(other_args: List[str], preset_loaded: str):
         plt.grid(b=True, which="minor", color="#999999", linestyle="-", alpha=0.2)
         # ensures that the historical data starts from same datapoint
         plt.xlim([max(l_min), df_similar_stock.index[-1]])
+
+        if gtff.USE_ION:
+            plt.ion()
+
         plt.show()
         print("")