this is my Python3 project hiearchy: From script.py, I would like to run a http server which serve the content of the web folder. Here is suggested this code to run a simple http server: but this actually serve project, not web. How can I specify the path of the folder I want to serve? Answer In Python 3.7 Si…
How can I copy one collection from MongoDB using pymongo and paste to another empty collection?
I want to copy full collection (e.g. name ‘home’). Then do some changes in the ‘home’ collection or remove doc inside it (not a collection). And then replace changed ‘home’ collection to its default state from item 1. I do next: But the collection is empty. Answer The probl…
Visual C++ for python failed with exit status 2 when installing divisi2
I am using Python 2.7 on Windows 8.1 46 bit. I want to install divisi2 I have installed NumPy and SciPy which are the pre-requisites for divisi2 already. I have installed Visual C++ for python 9.0. Whenever I issue the pip install divisi2 command I get the following error in the console. Answer I finally solv…
How to use Basemap (Python) to plot US with 50 states?
I am aware that the powerful package Basemap can be utilized to plot US map with state boundaries. I have adapted this example from Basemap GitHub repository to plot 48 states colored by their respective population density: Now my question is: Is there a simple way to add Alaska and Hawaii to this map and pla…
Python type hinting without cyclic imports
I’m trying to split my huge class into two; well, basically into the “main” class and a mixin with additional functions, like so: main.py file: mymixin.py file: Now, while this works just fine, the type hint in MyMixin.func2 of course can’t work. I can’t import main.py, because I…
covariance between two columns in pandas groupby pandas
I am trying to calculate the covariance between two columns by group. I am doing doing the following: Ideally, I would like to get the covariance between X and Y and not the whole variance-covariance matrix, since I only have two columns. Thank you, Answer You are almost there, only that you do not clear unde…
how to trigger function in another object when variable changed. Python
As far as I know, this is like an Observer pattern. Scenario: A Center object keeps a list (queue) of all its clients. I’m using Twisted. One of client objects changes a variable in center object OR notify the center to change the variable, and then the center object detects the change immediately; then…
Ordering of batch normalization and dropout?
The original question was in regard to TensorFlow implementations specifically. However, the answers are for implementations in general. This general answer is also the correct answer for TensorFlow. When using batch normalization and dropout in TensorFlow (specifically using the contrib.layers) do I need to …
Scrapy: populate items with item loaders over multiple pages
I’m trying to crawl and scrape multiple pages, given multiple urls. I am testing with Wikipedia, and to make it easier I just used the same Xpath selector for each page, but I eventually want to use many different Xpath selectors unique to each page, so each page has its own separate parsePage method. T…
Adding API to Usage Plan using Serverless Framework
My serverless.yaml file is as follows: I want to add this API to a Usage Plan. How is this done? Answer Used the AWS CLI with the following command