I am creating a form for the user to enter a valid UK postcode. I currently have the following code for the form: and the template is: but getting the error: TypeError: argument of type ‘StringField’ is not iterable. What can I do to fix this? Edit: Here are the complete form entry and the templat…
Pandas fill in missing dates in DataFrame with multiple columns
I want to add missing dates for a specific date range, but keep all columns. I found many posts using afreq(), resample(), reindex(), but they seemed to be for Series and I couldn’t get them to work for my DataFrame. Given a sample dataframe: My goal is to return below; filling in qty as 0, but fill oth…
Parameters of resource_filename in pkg_resource in python
I don’t understand how exactly pkg_resource.resource_filename() work and what are its parameters. I searched a lot on web but their official documentation does not cover it well. Can someone explain it? Answer Here are a few examples. I have wheel 0.24 installed in an old environment: The first argument…
Translating python function with boolean indexing within loop to cython
Below I’ll write a function in pure python that I want to Cythonize. Suppose that I know how to Cythonize the function do_stuff. The actual do_stuff function I’m interested in is more complicated than the one above but I thought I’d provide an example. The real do_stuff function computes det…
How to set heatmap aspect ratio
I have a single-channel image where each integer pixel value maps to a string. For example 5 -> ‘person’. I’m trying to create an interactive image where hovering over a pixel will display it’s corresponding string. I figured using plotly heatmaps might be the way to do this. The is…
How can I get the text clean with scrapy shell
I’m trying the following command on scrapy shell which returns this result: The thing is, I want to extract only the word “Ajax” that is is between <strong> tags. Answer You need to add <strong> tag to your selector
Web Scraping – URL extraction from Lazada ecommerce platform
I am currently trying to scrape the products URLs from Lazada ecommerce platform, however i am getting random links from the website rather than the products links. https://www.lazada.com.my/oldtown-white-coffee/?langFlag=en&q=All-Products&from=wangpu&pageTypeId=2 My code below: The result I am ge…
How does pytorch’s nn.Module register submodule?
When I read the source code(python) of torch.nn.Module , I found the attribute self._modules has been used in many functions like self.modules(), self.children(), etc. However, I didn’t find any functions updating it. So, where will the self._modules be updated? Furthermore, how does pytorch’s nn.…
How to guess the numerical Solution for Mathieu’s Equation
am trying to predict the exact solution for the mathieu’s equation y”+(lambda – 2qcos(2x))y = 0. I have been able to get five eigenvalues for the equation using numerical approximation and I want to find for each eigenvalues a guessed exact solution. I would be greatfull if someone helps. Th…
Write a Python program to guess a number between 1 to 9
Write a Python program to guess a number between 1 to 9 Note : User is prompted to enter a guess. If the user guesses wrong then the prompt appears again until the guess is correct, on successful guess, user will get a “Well guessed!” message, and the program will exit. The above statement is give…