I have a folder full of PDFs which I have parsed using Apache Tika, and I have a template excel file which I use to gather specific information from those PDFs and store using openpyxl. The issue I am having is looping through using openpyxl rows. For example, if there is just one PDF in folder, the values go…
using selenium.click() to change pages but gets error
I’m trying to click on a div to get to the next page of a table (the url does not change when the page changes). The go to the next page div has the same class as the go to the previous page’s. ive used: and it worked to get me to page 2, but after page 2 it gives
Most efficient way to get a key from a dictionary
Let d be a large (but still fits into memory) Python dictionary where we do not know what the keys are. What is the most efficient way (efficient should mean something like the memory used to perform the task is small compared to the size of the dictionary and the speed should at least as fast any of the meth…
How to make multiple plots with seaborn from a wide dataframe
I’m currently learning about data visualization using seaborn, and I came across a problem that I couldn’t find a solution to. So I have this data index col1 col2 col3 col4 col5 col6 col7 col8 1990 0 4 7 3 7 0 6 6 1991 1 7 5 0 8 1 8 4 1992 0 5 0 1 9 1
Why does matplotlib.pyplot.savefig() mess up image outputs for very large pandas.plotting.scatter_matrix()?
I was trying to compute the pandas.plotting.scatter_matrix() values for very large pandas.DataFrame() (relatively speaking for this specific operation, most libraries either run OOM most of the time or implement a row count check of 50000, see vaex-scatter). The ‘Time series’ DataFrame shape I hav…
Optimizing python script to produce output faster (Variable Assignment)
I am using python for optimization purposes. I made a graph using Networkx library with 1100 nodes. The python script includes the following lines. In the next step, some random numbers are generated as follows: I compute the distance between nodes in the graph using the following function. Finally, I defined…
Python 3 – How do I extract data from SQL database and process the data and append to pandas dataframe row by row?
I have a MySQL database, its columns are: I need to extract data from it and process the data and add the data to a pandas DataFrame. I know how to extract data from SQL database, and I have already implemented a way to pass the data to DataFrame, but it is extremely slow (about 30 seconds), whereas when I
How to replace any number of special characters with a space in a dataframe column
I have a column in Pandas that has a number of @ characters in between words. The number of consecutive @ is random and I can’t replace them with a single space not blank space since it would create cases such as Original string Replacing with ” Replacing with ‘_’ or single space Sun i…
I’m trying to print the largest number from the inputs that the user gives, but it’s printing the wrong number
Basically, I’m trying to build a code to get the largest number from the user’s inputs. This is my 1st time using a for loop and I’m pretty new to python. This is my code: When I try running my code this is what happens: Any fixes? Answer So, first things first, the use of max can be avoided…
ndpointer in ctypes structure field
I cannot figure out how to use numpy.ndpointer as a field in a python ctypes structure. Here is some basic code, showing how I can do this without using ndpointer, but I would like to know if it’s possible to use ndpointer as well if it’s possible! Using the above code this works fine But when I c…