I need to write something into files, which I am passing through command line in python. I am using the below code mycode.py When I execute it, the file is not written, but when I hardcode path as the file is being written, Please let me know if I am missing anything. One more requirement is I have to pass
“OperationalError: no such table: django_site” when running makemigrations with empty database when using Django-todo
I have inherited a Django 1.11.6 application from another developer. Now after I have made a lot of changes to the code and data model, I want to re-create the sqlite database from scratch. But when I run manage.py makemigrations in the project directory (no migration files and database present), I am getting…
Code works line-by-line in Spyder, but not when the whole script is run
I’ve installed pystan and am trying to verify that the installation has worked correctly. When I go to the IPython console in Spyder and run the following code line by line, it generates the correct answer. The line calling pystan.StanModel takes about 30 seconds, while the other lines execute instantan…
can’t understand scipy.sparse.csr_matrix example
I can’t wrap my head around csr_matrix examples in scipy documentation: https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.csr_matrix.html Can someone explain how this example work? I believe this is following this format. csr_matrix((data, (row_ind, col_ind)), [shape=(M, N)]) where data,…
AttributeError: module ‘asyncio’ has no attribute ‘create_task’
I’m trying to asyncio.create_task() but I’m dealing with this error: Here’s an example: Out: So I tried with the following code snippet (.ensure_future()) instead, without any problem: Out: What’s wrong? [NOTE]: Python 3.6 Ubuntu 16.04 [UPDATE]: With borrowing from @user4815162342 Answ…
Accessing C array in golang
I have two files, module.go and test.py. My goal is to speed up some calculations that is done in python, but have an issue accessing array of integers in go. module.go and simple test file in python: After compiling go module with go build -buildmode=c-shared -o gomodule.so module.go and fire up python file …
IPython, “name ‘plt’ not defined”
I recently installed Atom as an IDE on my laptop, for university. I installed Hydrogen as a convenient solution to show some plots on the go. But whenever I run Hydrogen, I get this error: However Matplotlib is working properly when executed normally, and IPython seems to do as well. This is the code I’…
Specifying marker size in data unit for plotly
I switched from matplotlib to plotly mainly to plot smooth animations in 2D/3D. I want to plot the motion of robots consisting of multiple circles/spheres. The different body parts of the robot have different sizes and the circles need to represent that accurately. Is there a way in plotly to specify the size…
Stop showing plots in spyder
I have scripts that make lots of plots. I save them directly with plt.savefig() rather than plt.show() so I don’t have to close all the windows. In spyder, they all show up in the console if I use inline (meaning I have to scroll way back to see other output), and they all show up in separate windows if…
Printing lines in a text file given line numbers
I am having trouble with a while loop statement for the question below. This is for a txt.file. ‘Write a program that allows the user to navigate through the lines of text in any text file. The program prompts the user for a filename and copies the lines of text from the file into a list. The program th…