I have a list of filenames but in the directory they are named a little different. I wanna print filenames that are not in directory. Example of files: FOO_BAR_524B_023D9B01_2021-157T05-34-31__00001_2021-08-30T124702.130.tgz I cannot get what I’m doing wrong… Answer The problem is that you iterate…
how to add a constant column to a dataframe without rows
I am trying to add a column with a constant value to a dataframe that does not have any rows. It appears this isn’t as easy as it would be if the rows were populated. How would one accomplish this? Should yield instead it yields Answer You can use .loc specifying the row index and column label, as follo…
how to spatialy aggregate netcdf fields in python, CDO, or NCO?
I want to regrid population data from 0.05 degrees to 0.1 degrees. Because it is population, I should aggregate (sum) population values for resampling data to a coarser resolution. Although I thought that there going to be a simple answer to this question, I did find any yet. I think my question does not need…
Using a for loop with beautiful soup and if statements to populate a dataframe
Goal: The goal of my project is to use BeautifulSoup aka bs4 to scrape only necessary data from an HTML file and import it into excel. The html file is heavily formatted so unfortunately I haven’t been able to tailor more common solutions to my needs. What I have tried: I have been able to parse the HTM…
For doesn’t restart on dataframe in python
i need do read the rows of a dataframe but it seems to stop at the first row. I also tried with iterrows but the results are similar. and the outpus is : so the for doesn’t iterate. I hope someone can help me, thank you so much. Answer You are performing inside the loop. This breaks the loop on
How can I perform the following transformation?
I have a dataframe as follows: And I want to convert this dataframe as follows: I tried a few things but nothing worked. Any ideas? Answer Use Series.str.get_dummies with DataFrame.stack: If order is important:
How to compare 2 dictionary values in Python and make pairs with common ones by keys?
I have 2 columns: one is the Pandas DateTime Dataframe (data[“start”]) and the second is the tags, data[“parallels”] for example. So i’m going to create a dictionary, like this: So, the output dictionary is: {3: ‘1.0’, 5: ‘1.0’} How can i check this dictio…
How drop duplicate rows based on a time delta whilst keep the latest occurrence of that record?
I have a table in the form: ID DATE_ENCOUNTER LOAD 151336 2017-08-22 40 151336 2017-08-23 40 151336 2017-08-24 40 151336 2017-08-25 40 151336 2017-09-05 50 151336 2017-09-06 50 151336 2017-10-16 51 151336 2017-10-17 51 151336 2017-10-18 51 151336 2017-10-30 50 151336 2017-10-31 50 151336 2017-11-01 50 151336 …
UPDATE SQLite database from Python not working as expected
I want to perform an UPDATE? on a SQLite database from Python (2.7). This is the table` and this is how I want to insert rows However, when I do a SELECT * FROM foo it the result set is zero rows.. There is not data in there. Why? Answer It sounds like you want to insert here, not update:
Is it possible to set a jupyter notebook chunk to run with a certain delay after the previous one?
I have the following 2 chunks. Once the first chunk gets executed in python it seems to me that it takes time for the stored procedure to execute in sql. Before that is done, however, python moves immediately to next chunk. Is it possible to delay running of the next chunk by say 5 minutes? Answer I’m n…