I am new to Flask. I wrote this basic code and save it in hello.py in my D:Cat_vs_Dogscripts folder. Then in command prompt, I wrote the following commands. I am getting this error. What should I do…? Answer Flask v1.1.x https://flask.palletsprojects.com/en/1.1.x/cli/#application-discovery The above doc…
Convert dataframe to a rec array (and objects to strings)
I have a pandas dataframe with a mix of datatypes (dtypes) that I wish to convert to a numpy structured array (or record array, basically the same thing in this case). For purely numeric dataframes, this is easy to do with the to_records() method. I also need the dtypes of pandas columns to be converted to st…
Detect key release while using keyboard module
Warning: my English sucks and also I’m really new to python So I’m making a program that requires a specific Key Press (e.g. space bar) to continue the loop, like: and my method for the last line is the keyboard module (not from pynput), which has the functionis_pressed. When I pressed a key, I go…
Python, extract urls from xml sitemap that contain a certain word
I’m trying to extract all urls from a sitemap that contain the word foo in the url. I’ve managed to extract all the urls but can’t figure out how to only get the ones I want. So in the below example I only want the urls for apples and pears returned. Answer I modify the xml to valid format (…
__slots__ type annotations for Python / PyCharm
How can I provide type annotations for attributes which are defined via __slots__? E.g. for this class: (Python 2 compatible in a comment if possible (otherwise Python 3 only is fine), and also such that PyCharm can handle it (actually that is most important for me now).) Answer __slots__ only tells the type(…
Catch a specific `Windows Error` number – python
I am creating a new nested directory (data_dir = ‘parentchild’) in python: If the parent directory ‘parent’ did not exists (yet, ’cause I might be setting later in the code), then the code caught that as a Windows Error 3 and moved on. However now what could also happen is Window…
How can I read a text file from Azure blob storage directly without downloading it to a local file(using python)?
How can i reads a text blob in Azure without downloading it? I am able to download the file and then read it but, i prefer it to be read without downloading. Is there any operation in ‘blob1’ object, which would allow me to read the text file directly.(like blob1.read or blob1.text or something li…
Calculating the number of zero crossings in a list in python
I am trying to find the number of zero crossing in a list. The code I am using is: This code doesn’t give me any errors, but it’s not giving me the right answer. If I give it the input [1.0, -1.0, 1.0] it gives me 1, but it should give 2. What am I doing wrong? Answer You’re setting
Cronjob on Ubuntu Mate for Raspberry stops right after execution
I use a RaspberryPi 3 with UbuntuMate 16.04. On it, I want to start a little Python (3.5) program every midnight. For that I call a little shell script, so that I can change into the wanted directory comfortably. crontab: start.sh (yes, it’s executable): Now if I execute the programm or script from the …
format/round numerical legend label in GeoPandas
I’m looking for a way to format/round the numerical legend labels in those maps produced by .plot() function in GeoPandas. For example: This gives me a legend with many decimal places: I want the legend label to be integers. Answer As I recently encountered the same issue, and a solution does not appear…