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Tag: python
Pandas, get all possible value combinations of length k grouped by feature
I have a Pandas dataframe something like: Feature A Feature B Feature C A1 B1 C1 A2 B2 C2 Given k as input, i want all values combination grouped by feature of length k, for example for k = 2 I want: How can I achieve that? Answer This is probably not that efficient but it works for small scale.
Convert a Pandas DataFrame with true/false to a dictionary
I would like to transform a dataframe with the following layout: into a dictionary with the following structure: Answer IIUC, you could replace the False to NA (assuming boolean False here, for strings use ‘false’), then stack to remove the values and use groupby.agg to aggregate as list before co…
python printing correct line in program
I am taking a Python programming course with this question on strings: Which prints: I’m getting tripped up on the questions: What is the first, second, third, and fourth line printed by the code above? If a blank line is printed, write Blank. If there is no third line, write None. The only question I g…
Python: simulate tossing a die until all values have appeared at least once
I want to sample from a list until all elements have appeared at least once. We can use tossing a die as an example. A die has six sides: 1 through 6. I keep tossing it until I see all six values at least once, then I stop. Here is my function. cur_val is the value from the current toss.
How to click through multiple elements with same XPATH in selenium using for loop?
I’m trying to web scrape different elements with same class name. The following statements works well. … and so on. Now, if I put this in a loop, it doesn’t work. Looks like, it doesn’t recognize (//div[@class= ‘jumbo-tracker’])[i] Here’s the code: Here’s the ex…
Pandas to read a excel file from s3 and apply some operation and write the file in same location
i am using pandas to read an excel file from s3 and i will be doing some operation in one of the column and write the new version in same location. Basically new version will overwrite the original version. with csv file i am able to achieve using the below code but not sure of excel(.xlsx). Please can someon…
How can I print more links from the HTML DOM using Python Selenium?
Html: Python selenium code trials: Output: How print ooooo.pdf and aaaaa.pdf? I want to print more links, what should I do? Answer element_to_be_clickable() returns a single WebElement hence href attribute of only the first matching element is printed. Solution To extract all the href attribute values you hav…
How to Read data from Jdbc and write to bigquery using Apache Beam Python Sdk
I am trying to write a Pipeline which will Read Data From JDBC(oracle,mssql) , do something and write to bigquery. I am Struggling in the ReadFromJdbc steps where it was not able to convert it correct schema type. My Code: My data has three columns two of which are Varchar and one is timestamp. Error which i …
Select specific rows from pivot table in pandas
I have a dataframe which I pivoted and I now want to select spefici rows from the data. I have seen similar questions such as the one here: Selecting columns in a pandas pivot table based on specific row value?. In my case I want to return all the columns but I want to select only specific rows. I have