How to populate a dataframe from row-by-row calculations?
I am seeking to populate a pandas dataframe row-by-row, whereby each new row is calculated on the basis of the contents of the previous row. I am using this for simple financial projections.
Python
Issues with clockwise polar plot
I have a list of values representing radius (r) and another representing angles (theta). I am trying to make a polar plot with North as 0 deg, East as 90 deg and so on.
Python pandas how increase +1 end of each sku?
I have an pandas dataframe like this:
How to pass params in jaydebeapi .execute?
I want to select data from oracle DB using python and jaydebeapi. I’m trying to get data using next script:
FastAPI Model error one to many relationship
I’m new to fastapi and I’m having some issues setting up a one to many relationship. My API works fine when I have the code for the relationship commented out but when trying to have the relationship in it causes an error saying
Poisson random variable in python
Assume that number of calls that some call center receives during one minute is Poisson random variable with parameter λ=2. Use Python to find probability that number of calls is larger than 5. Enter number with first 5 digits after the decimal point.
BeautifulSoup – Can’t find children tags by CSS selectors
I tried all the solutions mentionned here but none of it is working on my code.
My problem is i only want to get the text from spans tags which are children of h2 tags (and not h3 tags) on this Wikipedia page (https://fr.wikipedia.org/wiki/Manga)
This is my code :
about pandas dataframe reverse column’s data order
Code import pandas as pd import numpy as np df = pd.DataFrame({"K1":[1,2,3],"K2":[4,5,6]}) df["result"] = (df["K1"].shift(1)*df["K2"]).fillna(1)[::-1] #line A print(df["result"]) print((df["K1"].shift(1)*df["K2"]).fillna(1)[::-1]) #line B print((df["K1"].shift(1)*df["K2"]).fillna(1)) # line C Output 0 1.0 1 5.0 2 12.0 Name: result, dtype: float64 2 12.0 1 5.0 0 1.0 dtype: float64 0 1.0 1 5.0 2 12.0 dtype: float64 Why column result … Read more
Matplotlib : Horizontal Bar Plot with Color Range
Please forgive the crude explanation but I’m unsure how to describe the issue and as they say, a picture says a thousand words, so what I am trying to achieve is to draw a graph in matplotlib that looks like the below:
whereby the scale of the color range is the same across all bars as the x limits of the x-axis.
Trying to append a new row to the first row in a the table body with BeautifulSoup
Having trouble appending a new row to the first row (the header row) in the table body ().