I know there are many questions like this one but I can’t seem to find the relevant answer. Let’s say I have 2 data frames as follow: Resulted as: The classic way to merge by ID so timestamp will be between start and end in df1 is by merge on id or dummy variable and filter: In which I get
Tag: python-3.x
$ variable name in Python to get os.getenv
My curl.trill works: But python throws this error: I have tried changing $ to something else but it didn’t help. Any suggestions? Answer you can use $ as the name of a variable, try this code:
What is the complexity of this algorithm and is there a possibility to improve it?
This is the algorithm of this problem: Write a function that takes two arrays as input, each array contains a list of A-Z; your program should return True if the 2nd array is a subset of 1st array, or False if not. Answer The complexity of your algorithm is O(n*k), where n and k is length of arrays. You have
Create a list of dictionaries from nested list
I do have a dynamic text that will change. I want to store those values in a meaningful way. I have created a nested list to store them but I need to convert those to individual dictionaries and store it into a list. How do I do this? So far good. Devices variable is a nested list. I need to
Custom list class slicing functionality
I want to implement my own type of list called Stack. I also want to add slicing functionality with the __getitem__ method like so: Now if I create a Stack instance and append some elements to it I get the Stack type: but if I slice my Stack, it becomes a list again: how can I make st_sliced to stay
Define the variable of a function call indirectly
I have two files file1.py and file2.py. I execute a function from file2.py which executes a function from file1.py. The transfer function from file1.py is used in several other files in the tree. Could I, from outside the tree, set the token variable for the transfer function in my file1.py? Which would be ap…
PySimpleGui – How can I update GUI with a question but not check for the answer during the first iteration
I am making a quiz program in PySimpleGui. I want it so that the first question appears automatically without pressing a button. Is there a way to do this without adding the question in the layout? With the code below the question only appears after the submit button is pressed. I would prefer it not to be in…
Does Pandas account for leap years when calculating dates
I am trying to add 148.328971 years precisely from the day 01.01.2000 using pandas. I first converted this to days by multiplying it by 365. So here is my question, albeit probably a dumb one. Does pandas consider leap years when calculating days? The obvious answer is yes because it is calculating days but I…
What’s the easiest way to retrieve FTP files based on a list of filenames (in multiple FTP directories) – Python
In FTP, the structure looks like this: For example: So each year has 12 folders (one for each month), each month contains multiple folders (one for one day), and each day have multiple csv files (filename is consisted of the date_xx.csv). I have a list of filenames that I want to download, for example: My cur…
Python multi connection downloader resuming after pausing makes download run endlessly
I have written a Python script that downloads a single file using 32 connections if available. I have written a multiconnection downloader that works fine without pausing, but won’t stop downloading after resuming, the progress would go beyond 100%… Like this: After progress exceeds 100%, there wi…