Answer In fact, this is a problem caused by the format of the image itself. There is an incompatibility issue with opencv. I don’t know if it’s a bug. This problem can be solved in two ways. or
Tag: python
Dataframe to Excel, with no border formatting, and auto column width
In writing dataframe to Excel spreadsheet, I want the file to have no border on the first row and column width to be auto adjusted. With the old package xlwt and xlrd, I can read the file from Pandas produced, to a new file with no border on the header. But it’s .xls (not .xlsx) format. I can’t ma…
Generalize algorithm for a loop comparing to last record?
I have a data set which I can represent by this toy example of a list of dictionaries: Here is an algorithm in Python which collects each of the keys in each ‘collection’ and whenever there is a key change, the algorithm adds those keys to output. The correct output given here records each change …
Authentication using python Kubernetes api in GCP is not working
I would like to be able to access GKE (kubernetes) cluster in GCP from python kubernetes client. I cant authenticate and connect to my cluster and i dont find the reason. Here is what i tried so far. Answer I’d like to get the configuration working I have it work where, the code is running off cluster a…
3.11 Lab: Smallest number
Write a program whose inputs are three integers, and whose output is the smallest of the three values. If the input is: The output is: 3 This is the code I have come up with: This code works for that input, however if you input “29, 6, 17” it returned no output with an error I have dinked around q…
pandas MultiIndex: insert a row at top and keep first level of index hidden
In MultiIndex dataframe: I want to insert a row ex at top and keep the first level of MultiIndex hidden. The expected result is I tried concat: However it become I also tried first concat without index, then groupby multiply index. But pandas will automatically sort by MultiIndex. As a result, ex row cannot b…
Drop first nan rows in multiple columns
I have the below df: I want to structure the data so the first NaN rows are deleted by column. Resuling df: I’m essentially trying to shift the column data up by n rows depending on where the data starts for that column, so at the first rows of ID there is always data in at least 1 of the
Find end point on each line using OpenCV
I’m trying to get the coordinate of every end point on every line, but i couldn’t come up with a solution, this is what I’ve currently got but its finding the outline of the lines not the lines itself Answer The hit-or-miss transform can be used to find end points of a line after skeletoniza…
Algorithm to position diners at a table with social distancing guidelines
Trying to solve this task: A cafeteria table consists of a row of N seats, numbered from 1 to N from left to right. Social distancing guidelines require that every diner be seated such that K seats to their left and K seats to their right (or all the remaining seats to that side if there are fewer than K)
Assigning an Excel Chart Object Name with XlsxWriter
Is it possible to assign an Excel Chart Object name to a chart I am creating with XlsxWriter? Thanks Answer It is (unintentionally) undocumented but you can set the object name for a chart when you create it. Like this: Output: Update: It is documented now.