I’d like to call exec in an async function and do something like the following code (which is not valid): More precisely, I’d like to be able to wait for a future inside the code that runs in exec. How can this be achieved? Answer Note: F-strings are only supported in python 3.6+. For older versions, use %s, .format() or
Tag: python-3.x
Iterate over list selecting multiple elements at a time in Python
I have a list, from which I would like to iterate over slices of a certain length, overlapping each other by the largest amount possible, for example: In other words, is there a shorthand for zip(seq, seq[1:], seq[2:]) where you can specify the length of each sub-sequence? Answer [seq[i:i+3] for i in range(len(seq)-2)] is the Python code for something similar.
Why isn’t my for loop working for my expression?
I want this function to read a password, and check to see if it has at least 1 number in it. If not, it needs to return False. I need to use a for loop with the range function and this is what I have: I’ve tried different variations and it’s driving me crazy. Can someone possibly explain to a
Count duplicate lists inside a list
I want the result to be 2 since number of duplicate lists are 2 in total. How do I do that? I have done something like this But the count value is 1 as it returns matched lists. How do I get the total number of duplicate lists? Answer Solution You can use collections.Counter if your sub-lists only contain numbers
PyQt Label not changing text
I have this code running on a PyQt window on windows: Inside the “runSimulation” code I start a subprocess using the method “call”. This blocks my GUI and at the title of the window appears “Python stopping responding”, but if I wait a little bit the subprocess finishes normally, and the label is finally changed. But what I want is
Python 3.6 Module cannot be found: Folium
I am trying to import folium into a Jupyter notebook I’m working on and I cannot seem to solve the import issues with the Folium library. Has anyone else solved this problem? Output from the above yields: Answer From the source: Choose the sandbox folder of your choice (~/sandbox for example) Clone folium from github: Run the installation script
String by value; Dictionary by reference?
I’m coming from C, learning Python. In Python (3.5.2), it seems that assignment of one data type to another of the same type is sometimes done by value and sometimes by reference. For example, strings are assigned by value: This is the behavior I expect. However, it works differently with dictionaries: Notice that both dict1 and dict2 were changed. Similarly,
Tensorflow Executor failed to create kernel. Unimplemented: Cast string to float is not supported
I’m trying to build a custom CNN classifier for a load of cancer images (.png) using Tensorflow 1.1.0 and TFLearn 0.3.1 by largely following someone else’s CNN classifier here, however when I try to fit my model Tensorflow is throwing out the following errors: I am using tflearn.data_utils.image_preloader to read the png files in however I have also tried using
Getting TypeError: __init__() missing 1 required positional argument: ‘on_delete’ when trying to add parent table after child table with entries
I have two classes in my sqlite database, a parent table named Categorie and the child table called Article. I created first the child table class and addes entries. So first I had this: And after I have added parent table, and now my models.py looks like this: So when I run python manage.py makemigrations <my_app_name>, I get this error:
Python3 BigQuery or Google Cloud Python through HTTP Proxy
How to route BigQuery client calls through HTTP Proxy ? Before Posting this, I tried following but it is still not routing through http proxy. And the Google Cloud service credentials are set through shell environment variable GOOGLE_APPLICATION_CREDENTIALS Outgoing traffic ( 172.217.x.x belongs to googleapis.com ) not routing through HTTP Proxy , Answer Answering the question myself as I found