I’m using django to create database tables for mysql,and I want it can create a column which type is uuid,I hope it can generate the uuid by itself,that means each time insert a record,I needn’t specify a uuid for the model object.How can I make it,thanks! Answer If you’re using Django >=…
Tag: python
How to exit dropdown menu in selenium webdriver
I am using selenium webdriver with Chrome. I am able to select item from dropdown menu and it works fine. But it there is no item in dropdown items after that I cannot select any other field. I put this is try catch block so it goes to next steps. If I try to select other field and sendKeys it
Checking proxy set header forwaded by nginx reverse proxy (Django app)
I’m using nginx as reverse proxy with gunicorn for my Django app, and am new to webserver configuration. My app has a postgres backend, and the machine hosting it has Ubuntu 14.04 lts installed. I have reason to suspect that my nginx configuration is not forwarding proxy set header to the Django app cor…
What are logits? What is the difference between softmax and softmax_cross_entropy_with_logits?
In the tensorflow API docs they use a keyword called logits. What is it? A lot of methods are written like: If logits is just a generic Tensor input, why is it named logits? Secondly, what is the difference between the following two methods? I know what tf.nn.softmax does, but not the other. An example would …
Value of custom field in sale.config.settings is not displayed in sales settings view
I try to add a new configuration field for sales configuration settings by inheriting the standard sales settings view/model using a custom module. Creating the field in the model works fine and a value entered in the view is also successfully written to the database. However, if I reload the view for sales c…
How can I remove digits after decimal in axis ticks in matplotlib?
I have This (and some additional code) produces the following plot, but I’d like to remove the decimal point and the digit after it from the tick labels on the top x axis. Using matplotlib.ticker.FormatStrFormatter(fmt) does not help Answer Convert the numbers into ints:
Finding the “centered average” of a list
“Return the “centered” average of a list of integers, which we’ll say is the mean average of the values, except ignoring the largest and smallest values in the list. If there are multiple copies of the smallest value, ignore just one copy, and likewise for the largest value. Use intege…
Python ldap3 code to get username from SID
I have a SID string (e.g., “S-1-5-21-500000003-1000000000-1000000003-1001”) of a user on a shared Windows server, and I need to get the related username. I suppose that this may be achieved by: Turning the SID string into byte array. Using a suitable ldpa query to get the related username. But I f…
How to create a big file quickly with Python
I have the following code for producing a big text file: But it seems to be pretty slow to even generate 5GB of this. How can I make it better? I wish the output to be like: Answer Well, of course, the whole thing is I/O bound. You can’t output the file faster than the storage device can write it.
How to add header row to a pandas DataFrame
I am reading a csv file into pandas. This csv file consists of four columns and some rows, but does not have a header row, which I want to add. I have been trying the following: But when I apply the code, I get the following Error: What exactly does the error mean? And what would be a clean way