Postgresql, Django 2.0, Python 3.6.4 After running a migration that changed the name of a field desktop_pay to simply pay, I’m getting an error when running manage.py test saying the column pay does not exist. Here’s the migration: Here’s the error: If I start a psql prompt, though, I can cl…
Tag: python
Error installing the linearmodels package on Jupyter notebook
I am trying to install the linearmodels package on Jupyter notebook using the following code: but I am getting the following error message: Can you anyone please help me with this? After installing the linearmodels package I’ll be importing a two-stage instrumental variables regression: Answer To instal…
how to create a autocomplete input field in a form using Django
I am pretty new to django and its ways. I am trying to create an autocomplete field for a form. My code is as below forms.py What I want to achieve is that when an user types words into the “From Email” field the list of emails I have stored in an external DB should appear in the autocomplete list
How do I read(open) an ASN.1 file in python
I want to get a certificates serial number using python: Unfortunately it fails in the first line: How do I read an ASN.1 file format (DER) in Python? Answer You are opening the file as a text file, which means read tries to decode the data using UTF-8 in order to return a str object. Instead, open it as a
Trouble running a Python script through VB
The objective is to receive an image path and pass that to a Python program as an argument, then receive the results. This is done through a web app using VB (on the IIS server) and it works perfectly except when I import the python module OpenCV (imported in Python as cv2, more specifically). What’s ev…
Hough Circles open CV error
I am currently using HoughCircles on computer-vision but I can’t manage to make it work. How can this error be solved ? Here is my code : UPDATE : New error : Answer As @jeru-luke has told in comment, you should add img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) just before you call cv2.HoughCircles() : CO…
Pandas: select cell value using pd.at with condition
I’d like to select specific cell values from a Pandas Dataframe. I want to filter out rows with specific values in column A, and then get the values from column B. From what I understand, the correct way to do this is to use df.at, so I’ve tried but this doesn’t work. I’ve also tried, …
How to pass choice display name to model serialize in Django REST framework?
My env is Django 2.0.3, DRF 3.8.2 and Python 3.6.4. I have a model in serializers.py: Where destination field is choice field of 3 elements: This is my models.py: ..And I return JSON like this: How to return destination field with his display name? For example: Would be great to have something like get_FOO_di…
“selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element” while clicking a ‘Next’ button with Selenium
I’m trying to click the Next button using Selenium, I’ve tried with the code below, but it ends in error. The element My code But then it outputs these errors: How can I click that button without errors? Answer This error message… …implies that the ChromeDriver was unable to locate the desir…
ModuleNotFoundError: No module named ‘tensorflow.examples’
When I import tensorflow I don’t get an error. However, I do get the error below. I’m using spyder if that helps. As per other questions, I ensured up to date (v1.8) tensorflow using both conda and then pip installs. This didn’t resolve the issue. Please assist. Answer Sometimes on downloadi…