Fork of original lightweight-charts with enhancements and supporting vectorbtpro workflow

• colored legends
• automatic colors if not provided
• support for left and mid price scales
• accepts df,pd.series or vectorbtpro indicator object (including unpacking multi outputs)
• new markers_set method allowing to set pd.series or dataframe as markers input
• supports simple df/sr accessors close.lw.plot() for quick visualization of single panel chart
• supports ch = chart([pane1, pane2], sync=True, title="Title", size="m") to quickly display chart with N panes (Panels). Also supports syncing the Panels sync=True or using xloc.

Examples

from lightweight_charts import chart, Panel

#one liner, displays close series as line on single Panel
close.lw.plot()

#quick few liner, displays close series with label "close" on right pricescale and rsi on left price scale, all on single Panel
pane1 = Panel(
    right=[(close, "close")],
    left=[(rsi,"rsi")]
)
ch = chart([pane1])

# display two Panels
# on first displays ohlcv data, orderimbalance volume as histogram with opacity, bbands on the right pricescale and
# sma with short_signals and short_exits on the left pricescale
pane1 = Panel(
    ohlcv=(t1data.data["BAC"],),     #(series, entries, exits, other_markers)
    histogram=[(order_imbalance_allvolume, "oivol",None, 0.3)],  # [(series, name, "rgba(53, 94, 59, 0.6)", opacity)]
    
    #following attributes assign lineseries series to different priceScaleIds, format: # [(series, name, entries, exits, other_markers)]
    right=[(bbands)],   #multioutput indicator, outputs are autom.extracted
    left=[(sma, "sma", short_signals, short_exits) #simple vbt indicator with markers in and outs
          (supertrend.trend, "ST_trend") #explicitly just one output of multioutput indicator
         ], 
    middle1=[],
    middle2=[],
)
#on second panel displays also ohlcv data, and sma on the left pricescale and histogram
pane2 = Panel(
    ohlcv=(t1data.data["BAC"],),
    right=[],
    left=[(sma, "sma_below", short_signals, short_exits)],
    middle1=[],
    middle2=[],
    histogram=[(order_imbalance_sma, "oisma")],
)

#display both Panels, sync them and pick size, use xloc
ch = chart([pane1, pane2], sync=True, title="Title", size="l", xloc=slice("1-1-2024","1-2-2024")

Example with markers

#assume i want to display simple entries or exits on series or ohlcv 
#based on tuple positions it determines entries or exits (and set colors and shape accordingly)
pane1 = Panel(
    ohlcv=(ohlcv_df, clean_long_entries, clean_short_entries)
)
ch = chart([pane1], title="Chart with Entry/Exit Markers", session=None, size="s")

#if you want to display more entries or exits, use tuples with their colors

# Create Panel with OHLC data and entry signals
pane1 = Panel(
    ohlcv=(data.ohlcv.get(),
           [(clean_long_entries, "yellow"), (clean_short_entries, "pink")], #list of entries tuples with color
           [(clean_long_exits, "yellow"), (clean_short_exits, "pink")]), #list of exits tuples with color
)

# # Create the chart with the panel
ch = chart([pane1], title="Chart with EntryShort/ExitShort (yellow) and EntryLong/ExitLong markers (pink)", session=None, size="s")

lightweight-charts-python

lightweight-charts-python aims to provide a simple and pythonic way to access and implement TradingView's Lightweight Charts.

Installation

pip install lightweight-charts

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Features

1. Streamlined for live data, with methods for updating directly from tick data.
2. Multi-pane charts using Subcharts.
3. The Toolbox, allowing for trendlines, rectangles, rays and horizontal lines to be drawn directly onto charts.
4. Events allowing for timeframe selectors (1min, 5min, 30min etc.), searching, hotkeys, and more.
5. Tables for watchlists, order entry, and trade management.
6. Direct integration of market data through Polygon.io's market data API.

Supports: Jupyter Notebooks, PyQt6, PyQt5, PySide6, wxPython, Streamlit, and asyncio.

PartTimeLarry: Interactive Brokers API and TradingView Charts in Python

---

1. Display data from a csv:

import pandas as pd
from lightweight_charts import Chart


if __name__ == '__main__':
    
    chart = Chart()
    
    # Columns: time | open | high | low | close | volume 
    df = pd.read_csv('ohlcv.csv')
    chart.set(df)
    
    chart.show(block=True)

---

2. Updating bars in real-time:

import pandas as pd
from time import sleep
from lightweight_charts import Chart

if __name__ == '__main__':

    chart = Chart()

    df1 = pd.read_csv('ohlcv.csv')
    df2 = pd.read_csv('next_ohlcv.csv')

    chart.set(df1)

    chart.show()

    last_close = df1.iloc[-1]['close']
    
    for i, series in df2.iterrows():
        chart.update(series)

        if series['close'] > 20 and last_close < 20:
            chart.marker(text='The price crossed $20!')
            
        last_close = series['close']
        sleep(0.1)

---

3. Updating bars from tick data in real-time:

import pandas as pd
from time import sleep
from lightweight_charts import Chart


if __name__ == '__main__':
    
    df1 = pd.read_csv('ohlc.csv')
    
    # Columns: time | price 
    df2 = pd.read_csv('ticks.csv')
    
    chart = Chart()
    
    chart.set(df1)
    
    chart.show()
    
    for i, tick in df2.iterrows():
        chart.update_from_tick(tick)
            
        sleep(0.03)

---

4. Line Indicators:

import pandas as pd
from lightweight_charts import Chart


def calculate_sma(df, period: int = 50):
    return pd.DataFrame({
        'time': df['date'],
        f'SMA {period}': df['close'].rolling(window=period).mean()
    }).dropna()


if __name__ == '__main__':
    chart = Chart()
    chart.legend(visible=True)

    df = pd.read_csv('ohlcv.csv')
    chart.set(df)

    line = chart.create_line('SMA 50')
    sma_data = calculate_sma(df, period=50)
    line.set(sma_data)

    chart.show(block=True)

---

5. Styling:

import pandas as pd
from lightweight_charts import Chart


if __name__ == '__main__':
    
    chart = Chart()

    df = pd.read_csv('ohlcv.csv')

    chart.layout(background_color='#090008', text_color='#FFFFFF', font_size=16,
                 font_family='Helvetica')

    chart.candle_style(up_color='#00ff55', down_color='#ed4807',
                       border_up_color='#FFFFFF', border_down_color='#FFFFFF',
                       wick_up_color='#FFFFFF', wick_down_color='#FFFFFF')

    chart.volume_config(up_color='#00ff55', down_color='#ed4807')

    chart.watermark('1D', color='rgba(180, 180, 240, 0.7)')

    chart.crosshair(mode='normal', vert_color='#FFFFFF', vert_style='dotted',
                    horz_color='#FFFFFF', horz_style='dotted')

    chart.legend(visible=True, font_size=14)

    chart.set(df)

    chart.show(block=True)

---

6. Callbacks:

import pandas as pd
from lightweight_charts import Chart


def get_bar_data(symbol, timeframe):
    if symbol not in ('AAPL', 'GOOGL', 'TSLA'):
        print(f'No data for "{symbol}"')
        return pd.DataFrame()
    return pd.read_csv(f'bar_data/{symbol}_{timeframe}.csv')


def on_search(chart, searched_string):  # Called when the user searches.
    new_data = get_bar_data(searched_string, chart.topbar['timeframe'].value)
    if new_data.empty:
        return
    chart.topbar['symbol'].set(searched_string)
    chart.set(new_data)


def on_timeframe_selection(chart):  # Called when the user changes the timeframe.
    new_data = get_bar_data(chart.topbar['symbol'].value, chart.topbar['timeframe'].value)
    if new_data.empty:
        return
    chart.set(new_data, True)


def on_horizontal_line_move(chart, line):
    print(f'Horizontal line moved to: {line.price}')


if __name__ == '__main__':
    chart = Chart(toolbox=True)
    chart.legend(True)

    chart.events.search += on_search

    chart.topbar.textbox('symbol', 'TSLA')
    chart.topbar.switcher('timeframe', ('1min', '5min', '30min'), default='5min',
                          func=on_timeframe_selection)

    df = get_bar_data('TSLA', '5min')
    chart.set(df)

    chart.horizontal_line(200, func=on_horizontal_line_move)

    chart.show(block=True)

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Inquiries: shaders_worker_0e@icloud.com

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This package is an independent creation and has not been endorsed, sponsored, or approved by TradingView. The author of this package does not have any official relationship with TradingView, and the package does not represent the views or opinions of TradingView.