Decorators and music tags

Python/PropertyDecorator/property.py

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+class TestThis(object):
+	'''Demonstrates how to use property() as a decorator
+	The power of this will be in declaring essentially private variables
+	Property has built in property.setter, property.getter, property.deleter'''
+	def __init__(self):
+		self.voltage = 0
+
+	@property
+	def voltage(self):
+		return self._voltage
+	
+	@voltage.setter
+	def voltage(self, value):
+		'''Variables inherit name of function, clearly. Can place tests on things here, if desired'''
+		if value < 0:
+			print('Voltage can not be negative')
+			self._voltage=0
+		else:
+			self._voltage = value
+	
+	@voltage.deleter
+	def voltage(self):
+		print('Deleting voltage')
+		del self._voltage
+
+	@property
+	def higher(self):
+		self._higher = self.voltage*3
+		return self._higher
+	
+	@higher.deleter
+	def higher(self):
+		print('deleted higher')
+		del self._higher
+
+if __name__=='__main__':
+	x = TestThis()
+	x.voltage = -217
+	print(x.voltage)
+	print(x.higher)
+	x.voltage = 3
+	print(x.higher)
+	del x.higher
+
+
+ 
+	

Python/mp3_m4a_tags/tagr.py

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+import sys
+from mutagen.mp4 import MP4
+#print(sys.argv[1:])
+# https://mutagen.readthedocs.io/en/latest/api/mp4.html#id1
+conv=sys.argv[1:]
+for item in conv:
+	if item.endswith('m4a'):
+		names=item.split('-')
+		# File names have the metadata in this case:
+		# 00-Song Title-Artist-Album-otherinfo.m4a
+		audio=MP4(item)
+		audio['\xa9nam']=[names[1]]
+		audio['\xa9ART']=[names[2]]
+		audio['\xa9alb']=[names[3]]
+		audio['\xa9gen']=['Electronic']
+		audio.save()
+
+