Interactive pyplot window (poc 2018)

poc2018.py

@@ -25,6 +25,14 @@ class VisuFile:
 	def __exit__(self, _et, _ev, _tb):
 		plt.savefig(self.filename, format='pdf')
 
+class VisuInter:
+	def __init__(self):
+		plt.ion()
+	def __enter__(self):
+		plt.clf()
+	def __exit__(self, _et, _ev, _tb):
+		plt.show(block=False)
+
 def get_xml():
 	URL=r'https://www.volby.cz/pls/prez2018/vysledky'
 	response = requests.get(URL)
@@ -65,7 +73,7 @@ def fill_data(vysl) -> tuple[datetime, dict[str, int]]:
 	return vysl.timestamp, vysl.kandidati
 
 def plot(ts, kand):
-	with VisuFile('/tmp/volby.pdf'):
+	with VisuInter():
 		order = (
 			'Jiří Drahoš',
 			'Jiří Hynek',
@@ -112,4 +120,9 @@ def visu_once():
 	ts, k = fill_data(v)
 	plot(ts, k)
 
-visu_once()
+def loop(refresh=30):
+	while True:
+		visu_once()
+		plt.pause(refresh)
+
+loop()