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louisnw01 committed May 10, 2023
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21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2023 louisnw01

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
205 changes: 205 additions & 0 deletions README.md
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# lightweight_charts_python

lightweight-charts-python aims to provide a simple and pythonic way to access and implement [TradingView's Lightweight Charts](https://www.tradingview.com/lightweight-charts/).

## Installation
```
pip install lightweight_charts
```
___

## Features
1. Simple and easy to use.
2. Blocking or non-blocking GUI.
3. Streamlined for live data, with methods for updating directly from tick data.
4. Support for wxPython.
___

### 1. Display data from a csv:

```python
import pandas as pd
from lightweight_charts import Chart


if __name__ == '__main__':

chart = Chart()

# Columns: | time | open | high | low | close | volume (if volume is enabled) |
df = pd.read_csv('ohlcv.csv')
chart.set(df)

chart.show(block=True)

```
![setting_data image](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/1_setting_data/setting_data.png)
___

### 2. Updating bars in real-time:

```python
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]

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)

```

![live data gif](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/2_live_data/live_data.gif)
___

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

```python
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 | volume (if volume is enabled) |
df2 = pd.read_csv('ticks.csv')

chart = Chart(volume_enabled=False)

chart.set(df1)

chart.show()

for i, tick in df2.iterrows():
chart.update_from_tick(tick)

sleep(0.3)

```
![tick data gif](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/3_tick_data/tick_data.gif)
___

### 4. Line Indicators:

```python
import pandas as pd
from lightweight_charts import Chart


def calculate_sma(data: pd.DataFrame, period: int = 50):
def avg(d: pd.DataFrame):
return d['close'].mean()
result = []
for i in range(period - 1, len(data)):
val = avg(data.iloc[i - period + 1:i])
result.append({'time': data.iloc[i]['date'], 'value': val})
return pd.DataFrame(result)


if __name__ == '__main__':

chart = Chart()

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

line = chart.create_line()
sma_data = calculate_sma(df)
line.set(sma_data)

chart.show(block=True)

```
![line indicators image](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/4_line_indicators/line_indicators.png)
___

### 5. Styling:

```python
import pandas as pd
from lightweight_charts import Chart


if __name__ == '__main__':

chart = Chart(debug=True)

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)

```
![styling image](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/5_styling/styling.png)
___

### 6. Callbacks:

```python
import pandas as pd
from lightweight_charts import Chart


def on_click(bar: dict):
print(f"Time: {bar['time']} | Close: {bar['close']}")


if __name__ == '__main__':

chart = Chart()

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

chart.subscribe_click(on_click)

chart.show(block=True)

```
![callbacks gif](https://github.com/louisnw01/lightweight-charts-python/blob/main/examples/6_callbacks/callbacks.gif)
___
## Wiki

For a detailed guide of lightweight-charts-python, view the wiki [here](https://github.com/louisnw01/lightweight-charts-python/wiki).

___

_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._



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