Hi, please, need help to comment the below Python code and

explaining what the class, objects, functions, methods, keyword does?

how they work together?

Thanks!

class TagCloud:

def __init__(self):

self.tags = {}

def add(self, tag):

self.tags[tag.lower()] = self.tags.get(tag.lower(), 0) + 1

def __getitem__(self, tag):

return self.tags.get(tag.lower(), 0)

def __setitem__(self, tag, count):

self.tags[tag.lower()] = count

def __len__(self):

return len(self.tags)

def __iter__(self):

return iter(self.tags)

cloud = TagCloud()

cloud["python"] = 30

len(cloud)

cloud.add("Python")

cloud.add("python")

cloud.add("python")

print(cloud.tags)