I am using the Tornado chat demo example from here: https://github.com/tornadoweb/tornado/tree/master/demos/chat and just altering it very slightly. The code change is just a small class called Connections and a bit in the MessageNewHandler(). All I am doing is just saving a reference to self and trying to wr…
Tag: python-3.x
Can I improve this code to a more oriented OOP paradigm?
I am improving this code to a student, here is the image: So I rewrite this using list compreenssion and oriented to a formal class, so the second question is: Can I improve yet more this code? Answer Yes you can improve your code to be more “Object Oriented”. It doesn’t make sence that Alun…
How to temporarily re-name a file or Create a re-named temp-file in Python before zipping it
In the below code I am trying to zip a list list of files, I am trying to rename the files before zipping it. So the file name will be in a more readable format for the user. It works for the first time, but when I do it again It fails with the error the file name already exists
How to reorder Data from yahoo finance(Python)?
I’m trying to write down a python script that allow me to get some items of financial statement from Yahoo.I’ve tried with yahoofinancials library, but I can get only an entire page of data: For istance,with this code: I will get this: I want to get every single element, such as “cash”…
Select n items from a set of subsets [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question I’m wondering if there exists an algorithm that can solve this problem: Suppose you hav…
Dynamically created classes with the same name
I’m trying to dynamically create subclasses in Python with type: and here’s what I see in the output: Obviously, this was not my intention. Two questions in that respect: How does Python handles multiple classes with identical names? What is a pythonic way to handle it? Of course, I can look up th…
How to identify minimum squared value of an entire pandas dataframe column by column?
I have a pandas dataframe like this: How could I calculate the sum of the squared values for the entire column (I am trying something like deviation = df[columnName].pow(2).sum() in a loop, but ideas are very welcome!) but also afterwards identifying the column that has the smallest of those sums and the actu…
Python: Calculate week start and week end from daily data in pandas dataframe?
I have a daily dataset for different months. I want to calculate the week start(sunday) and week end(saturday) based on each product type & country and values should be the average for that particular week. SAMPLE result format: I tried with groupby but I’m not able to get week start and end for eac…
Search substring in list of dictionaries of namedtuples keyed with an event type
I have created a list of dictionaries of named tuples, keyed with an event type. What would be the most pythonic method to return/print results that only contain “approved=1”, or “reviewed=1” and “approved=0”? Answer Not sure what output format you want exactly, but here…
Create subclass from superclass initializer in Python
Suppose I have a class Fruit and two Subclasses of it Orange(Fruit) and Banana(fruit) Fruit has an initializer, and I pass some parameters to it. But I don’t want it to just create and return a fruit necessarily, but based upon the parameters passed to it, to possibly return one of several different sub…