f72baf95ba
- Added async methods to polygon. - The `requests` library is no longer required, with `urllib` being used instead. - Added the `get_bar_data` function, which returns a dataframe of aggregate data from polygon. - Opened up the `subscribe` and `unsubscribe` functions Enhancements: - Tables will now scroll when the rows exceed table height. Bugs: - Fixed a bug preventing async functions being used with horizontal line event. - Fixed a bug causing the legend to show duplicate lines if the line was created after the legend. - Fixed a bug causing the line hide icon to persist within the legend after deletion (#75) - Fixed a bug causing the search box to be unfocused when the chart is loaded.
48 lines
1.1 KiB
Markdown
48 lines
1.1 KiB
Markdown
# YFinance
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```python
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import datetime as dt
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import yfinance as yf
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from lightweight_charts import Chart
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def get_bar_data(symbol, timeframe):
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if timeframe in ('1m', '5m', '30m'):
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days = 7 if timeframe == '1m' else 60
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start_date = dt.datetime.now()-dt.timedelta(days=days)
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else:
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start_date = None
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chart.spinner(True)
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data = yf.download(symbol, start_date, interval=timeframe)
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chart.spinner(False)
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if data.empty:
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return False
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chart.set(data)
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return True
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def on_search(chart, searched_string):
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if get_bar_data(searched_string, chart.topbar['timeframe'].value):
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chart.topbar['symbol'].set(searched_string)
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def on_timeframe_selection(chart):
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get_bar_data(chart.topbar['symbol'].value, chart.topbar['timeframe'].value)
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if __name__ == '__main__':
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chart = Chart(toolbox=True, debug=True)
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chart.legend(True)
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chart.events.search += on_search
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chart.topbar.textbox('symbol', 'n/a')
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chart.topbar.switcher(
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'timeframe',
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('1m', '5m', '30m', '1d', '1wk'),
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default='5m',
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func=on_timeframe_selection
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)
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chart.show(block=True)
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``` |