This question already has answers here: Keras – Plot training, validation and test set accuracy (6 answers) Closed 10 months ago. The code below is for my CNN model and I want to plot the accuracy and loss for it, any help would be much appreciated. I want the output to be plotted using matplotlib so ne…
Tag: validation
How to disable schema checking in FastAPI?
I am migrating a service from Flask to FastAPI and using Pydantic models to generate the documentation. However, I’m a little unsure about the schema check. I’m afraid there will be some unexpected data (like a different field format) and it will return an error. In the Pydantic documentation ther…
TKinter Entry validation not working after setting its StringVar
I have a TKinter entry widget where i want to validate the input, and everything works as expected. But when I set the StringVariable of the Entry widget the validation function is no more called. Can someone explain me this behavior? Here is an example of my problem where i validate whether the input is a di…
Dependencies validation using Cerberus
Am validating a CSV file with Cerberus but am struggling with what I’d assume is some basic logic Scenario: A CSV file has 2 columns. Column 2 requires to have a value only if Column 1 has a value. If Column 1 is empty then Column 2 should also be empty. Am thinking this would be one of the most
Using uk-postcode-utils in a python form
I am creating a form for the user to enter a valid UK postcode. I currently have the following code for the form: and the template is: but getting the error: TypeError: argument of type ‘StringField’ is not iterable. What can I do to fix this? Edit: Here are the complete form entry and the templat…
How to validate structure (or schema) of dictionary in Python?
I have a dictionary with config info: I want to check if the dictionary follows the structure I need. I’m looking for something like this: Is there any solution done to this problem or any library that could make implementing check_structure more easy? Answer Without using libraries, you could also defi…
Flask validates decorator multiple fields simultaneously
I have been using the @validates decorator in sqlalchemy.orm from flask to validate fields, and all has gone well as long as all of the fields are independent of one another such as: However, now I need to do some validation that will require access to field_one and field_two simultaneously. It looks like val…
Asking the user for input until they give a valid response
I am writing a program that accepts user input. The program works as expected as long as the the user enters meaningful data. But it fails if the user enters invalid data: Instead of crashing, I would like the program to ask for the input again. Like this: How do I ask for valid input instead of crashing or a…
How to check if a string is a valid regex in Python?
In Java, I could use the following function to check if a string is a valid regex (source): Is there a Python equivalent of the Pattern.compile() and PatternSyntaxException? If so, what is it? Answer Similar to Java. Use re.error exception: exception re.error Exception raised when a string passed to one of th…
Interactively validating Entry widget content in tkinter
What is the recommended technique for interactively validating content in a tkinter Entry widget? I’ve read the posts about using validate=True and validatecommand=command, and it appears that these features are limited by the fact that they get cleared if the validatecommand command updates the Entry w…