Bug Fixes:

- Screen now defaults to the active screen rather than the `0` screen.
- `null` values given in chart data are now removed and replaced with whitespace.
- Closing the chart window now cleanly exits.
- Fixed a bug causing the `offset` parameter to be greater than `0` when there is no offset.

docs/source/conf.py

@@ -3,7 +3,7 @@
 project = 'lightweight-charts-python'
 copyright = '2023, louisnw'
 author = 'louisnw'
-release = '1.0.17.6'
+release = '1.0.17.7'
 
 extensions = [
     "myst_parser",

docs/source/reference/abstract_chart.md

@@ -324,11 +324,11 @@ ___
 
 
 
-```{py:method} hotkey(modifier: 'ctrl' | 'alt' | 'shift' | 'meta', key: 'str' | 'int' | 'tuple', func: callable)
+```{py:method} hotkey(modifier: 'ctrl' | 'alt' | 'shift' | 'meta' | None, key: 'str' | 'int' | 'tuple', func: callable)
 
 Adds a global hotkey to the chart window, which will execute the method or function given.
 
-When using a number in `key`, it should be given as an integer. If multiple key commands are needed for the same function, a tuple can be passed to `key`.
+If multiple key commands are needed for the same function, a tuple can be passed to `key`.
 ```
 ___
 

lightweight_charts/abstract.py

@@ -134,6 +134,7 @@ def __init__(self, chart: 'AbstractChart', name: str = None):
         self._last_bar = None
         self.name = name
         self.num_decimals = 2
+        self.offset = 0
 
     def _set_interval(self, df: pd.DataFrame):
         if not pd.api.types.is_datetime64_any_dtype(df['time']):
@@ -155,7 +156,7 @@ def _set_interval(self, df: pd.DataFrame):
             value = value.total_seconds()
             if value == 0:
                 continue
-            elif value > self._interval:
+            elif value >= self._interval:
                 break
             self.offset = value
             break

lightweight_charts/chart.py

@@ -31,8 +31,8 @@ def __init__(self, q, start_ev, exit_ev, loaded, emit_queue, return_queue, html,
         webview.start(debug=debug)
         self.exit.set()
 
-    def create_window(self, width, height, x, y, screen=0, on_top=False, maximize=False):
-        screen = webview.screens[screen]
+    def create_window(self, width, height, x, y, screen=None, on_top=False, maximize=False):
+        screen = webview.screens[screen] if screen is not None else None
         if maximize:
             width, height = screen.width, screen.height
         self.windows.append(webview.create_window(
@@ -69,7 +69,7 @@ class Chart(abstract.AbstractChart):
     _q, _emit_q, _return_q = (mp.Queue() for _ in range(3))
     _loaded_list = [mp.Event() for _ in range(MAX_WINDOWS)]
 
-    def __init__(self, width: int = 800, height: int = 600, x: int = None, y: int = None, screen: int = 0,
+    def __init__(self, width: int = 800, height: int = 600, x: int = None, y: int = None, screen: int = None,
                  on_top: bool = False, maximize: bool = False, debug: bool = False, toolbox: bool = False,
                  inner_width: float = 1.0, inner_height: float = 1.0, scale_candles_only: bool = False):
         self._i = Chart._window_num
@@ -121,6 +121,7 @@ async def show_async(self, block=False):
                 if self._exit.is_set():
                     self._exit.clear()
                     self.is_alive = False
+                    self.exit()
                     return
                 elif not self._emit_q.empty():
                     func, args = parse_event_message(self.win, self._emit_q.get())
@@ -146,4 +147,5 @@ def exit(self):
         Chart._main_window_handlers = None
         Chart._window_num = 0
         Chart._q = mp.Queue()
+        Chart._exit.clear(), Chart._start.clear()
         self.is_alive = False

lightweight_charts/util.py

@@ -1,4 +1,5 @@
 import asyncio
+import json
 from datetime import datetime
 from random import choices
 from typing import Literal, Union
@@ -34,8 +35,13 @@ def parse_event_message(window, string):
 
 
 def js_data(data: Union[pd.DataFrame, pd.Series]):
-    orient = 'columns' if isinstance(data, pd.Series) else 'records'
-    return data.to_json(orient=orient, default_handler=lambda x: 'null' if pd.isna(x) else x)
+    if isinstance(data, pd.DataFrame):
+        d = data.to_dict(orient='records')
+        filtered_records = [{k: v for k, v in record.items() if v is not None} for record in d]
+    else:
+        d = data.to_dict()
+        filtered_records = {k: v for k, v in d.items()}
+    return json.dumps(filtered_records, indent=2)
 
 
 def jbool(b: bool): return 'true' if b is True else 'false' if b is False else None

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name='lightweight_charts',
-    version='1.0.17.6',
+    version='1.0.17.7',
     packages=find_packages(),
     python_requires='>=3.8',
     install_requires=[