I’m using redis on an AI project. The idea is to have multiple environment simulators running policies on a lot of cpu cores. The simulators write experience (a list of state/action/reward tuples) to a redis server (replay buffer). Then a training process reads the experience as a dataset to generate a …
Tag: python
Convert a variable sized numpy array to Tensorflow Tensors
I am trying Tensorflow 2.0 alpha preview and was testing the Eager execution . My doubt is that if you have a numpy array of variable size in middle like and so on for the rest of the array , how does one eagerly convert them to tensors. when I try or I get ValueError: Failed to convert numpy ndarray
R reticulate libstdc++so GLIBCXX_3.4.21 not found issue
I was trying to use pandas from R . I used the reticulate library for the same. The sample code I used is given below library(reticulate) use_condaenv(“my_env_37”,required=T) py_discover_config() py_run_string(“import pandas as pd”) Error Output from py_discover_config() Conda version …
When is the usage of the Python Ellipsis to be preferred over ‘pass’?
I was just looking up the way to go for defining an abstract base class in Python, when I found the abc module (https://docs.python.org/3/library/abc.html). After a bit of reading I saw the following class: Wondering about the triple dots, which I found it is called the Ellipsis (https://docs.python.org/3/lib…
How to zip together lists of unequal length into a dictionary?
I have three lists. I’d like to make these lists into a dataframe in which each row is the author paired with each coauthor and the frequency of collaborations. Basically if I could zip these three lists together, with the list ‘author’ replicated over and over in each row, this would be gre…
matplotlib: draw a box on axes
I want to draw the box between y=75 and 90 (green and red lines on the chart), but nothing is shown up when I do ax.add_patch this is the image I get: So How do I fill out the area between red and green horizontal lines? Answer If you have a fixed area you want to fill and you want
How do you scan characters in multi-character multi-string arrays in Python?
I’m working on my first Python project for a device that reads a string from OCR and outputs braille. The braille device can only output 6 letters at a time. I’m stuck trying to scan each character in the 6 character long multi-string array. For simplicity’s sake, for now I only want to prin…
Extracting 2gram strings from a column present in a list
I have a dataframe called df and a list called algorithms So technically, for each row of the Comments column, I’m trying to extract words that appear in the algorithms list. This is what I’m trying to achieve However, this is what I’m getting words like machine learning and fraud detection …
Scraping from beautifulsoup in Python with a for loop just returns the last result
I’m trying to scrape data from a webpage using beautifulsoup and (ultimately) output it into a csv. As a first step in this, I’ve tried to get the text of the relevant table. I managed to do this, but the code no longer gives me the same output when I rerun it: instead of returning all 12372 recor…
Separate combination of two separate lists keeping the correspondence/dependence on each other
I have two lists of same length which have one to one correspondence: I want to find combinations of these two lists separately. But the indices of combined elements must be the same for both lists. For example, if I do: I may get I could’ve got too because both are the same. So whatever the combination…