Is there a way to parse a URL (with some python library) and return a python dictionary with the keys and values of a query parameters part of the URL? For example: expected return: Answer Use the urllib.parse library: The urllib.parse.parse_qs() and urllib.parse.parse_qsl() methods parse out query strings, t…
Tag: python
how to align text to the left?
please help to fix the script. I would like to align the text in the Label widget on the left edge Answer Try this
Add x and y labels to a pandas plot
Suppose I have the following code that plots something very simple using pandas: How do I easily set x and y-labels while preserving my ability to use specific colormaps? I noticed that the plot() wrapper for pandas DataFrames doesn’t take any parameters specific for that. Answer In Pandas version 1.10 …
How to do linear regression, taking errorbars into account?
I am doing a computer simulation for some physical system of finite size, and after this I am doing extrapolation to the infinity (Thermodynamic limit). Some theory says that data should scale linearly with system size, so I am doing linear regression. The data I have is noisy, but for each data point I can e…
Django got an unexpected keyword argument
I’m trying to create an archive so I pass to the view the arguments year and month. However, I get an error with the code below and I can’t figure out what it means and how to solve it: What can be wrong? views.py urls.py Update: models.py Template Update 2: error Answer There is something wrong w…
Python. Redirect stdout to a socket
I run my script on computer “A”. Then I connect to computer “A” from computer “B” through my script. I send my message to computer “A” and my script runs it with an exec() instruction. I want to see the result of executing my message on computer “A”,…
How to split a pandas time-series by NAN values
I have a pandas TimeSeries which looks like this: I would like split the pandas TimeSeries everytime there occurs one or more NaN values in a row. The goal is that I have separated events. I could loop through every row but is there also a smart way of doing that??? Answer You can use numpy.split and then fil…
How do you check in python whether a string contains only numbers?
How do you check whether a string contains only numbers? I’ve given it a go here. I’d like to see the simplest way to accomplish this. Answer You’ll want to use the isdigit method on your str object: From the isdigit documentation: str.isdigit() Return True if all characters in the string ar…
Does begin_nested() automatically rollback/commit?
When begin_nested is used as a context manager, e.g. If an IntegrityError is thrown, will db.session.rollback () be called automatically? On the contrary, if no exception is thrown, will db.session.commit() be automatically called? Answer If a transaction, such as one from begin_nested, is used as a context m…
Pythonic alternative of gotoxy C code
I want to make a menu-driven program for elementary database management. So, please provide me some idea on how to use alternative of gotoxy in python with the help of below example. I have C code which draws a vertical & a horizontal line in the center of screen as below: Is there something like gotoxy()…