The sample code in your question is clearly trying to count the number of occurrences of each character: if it already has a count for a given character, get returns it (so it's just incremented by one), else get returns 0 (so the incrementing correctly gives 1 at a character's first occurrence in the string).
Understanding .get() method in Python - Stack Overflow
What is confusing you? You evidently know what .get invoked on a dictionary does, that's what's being called for each key in the dictionary.
Is it possible to pass parameters with an HTTP get request? If so, how should I then do it? I have found an HTTP post requst (link). In that example the string postData is sent to a webserver. I wo...
How to make an HTTP get request with parameters - Stack Overflow
11 Here is my solution. As advised by Andy E while answering this question, it's not good for your script's performance if it's repeatedly building various regex strings, running loops etc just to get a single value. So, I've come up with a simpler script that returns all the GET parameters in a single object.
Get the values from the "GET" parameters (JavaScript)
The get/set pattern provides a structure that allows logic to be added during the setting ('set') or retrieval ('get') of a property instance of an instantiated class, which can be useful when some instantiation logic is required for the property.