About vertical_span ..

[ZED63]

Question

i don't know why i'm having a hard time while trying to add a vertical span to my chart, not sure if i missed something or it's a bug (win11pro/python3.10/lightweight-charts 2.1)

here's the error i'm getting :

(py310) PS C:\Users\zed\Desktop\new_project> python .\tv.py
Exception in thread Thread-2 (loop):
Traceback (most recent call last):
File "C:\Users\zed.conda\envs\py310\lib\site-packages\lightweight_charts\chart.py", line 89, in loop
window.evaluate_js(arg)
File "C:\Users\zed.conda\envs\py310\lib\site-packages\webview\window.py", line 48, in wrapper
return function(self, *args, **kwargs)
File "C:\Users\zed.conda\envs\py310\lib\site-packages\webview\window.py", line 459, in evaluate_js
raise JavascriptException(result)
webview.errors.JavascriptException: {'name': 'ReferenceError', 'stack': 'ReferenceError: calculateTrendLine is not defined\n at eval (eval at (:4:29), :7019:29)\n at :4:29', 'message': 'calculateTrendLine is not defined'}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\zed.conda\envs\py310\lib\threading.py", line 1016, in _bootstrap_inner
self.run()
File "C:\Users\zed.conda\envs\py310\lib\threading.py", line 953, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\zed.conda\envs\py310\lib\site-packages\lightweight_charts\chart.py", line 94, in loop
raise JavascriptException(f"\n\nscript -> '{arg}',\nerror -> {msg['name']}[{msg['line']}:{msg['column']}]\n{msg['message']}")
KeyError: 'line'

Code example

import pandas as pd
from lightweight_charts import Chart


if __name__ == '__main__':
        chart = Chart(inner_width=0.5, inner_height=0.5)
        chart.set(pd.read_csv('bar_data/EURUSD_30min.csv'))
        chart.vertical_span(start_time="2024-12-04 22:00:00",end_time="2024-12-05 22:00:00")

        chart.show(block=True)