Get Confusion Matrix From a Keras Multiclass Model
Your input to confusion_matrix must be an array of int not one hot encodings.
Python
Using Look Up Tables in Python
Since we are not given any further information about what ranges should be associated with which values, I assume you will transfer my answer to your own problem. Look-up-Tables are called dictionary in python. They are indicated by curly brackets. Easy example: Here you create a dictionary with three entries: 1, 2, 3. Each of … Read more
pip install -r requirements.txt [Errno 2] No such file or directory: ‘requirements.txt’
I am setting up the base for a django project, I have cloned a repo and I have just created a virtual environment for the project in the same directory. But when I try to run the command pip install -r requirements.txt in the project directory I get this error: [Errno 2] No such file … Read more
examining items in a python Queue
The Queue module implements multi-producer, multi-consumer queues. It is especially useful in threaded programming when information must be exchanged safely between multiple threads. As you can see, the Queue module was created specifically for use with threads, providing only FIFO, LIFO and priority queues, none of which provide this functionality. However by examining the source … Read more
How can I login to a website with Python?
Maybe you want to use twill. It’s quite easy to use and should be able to do what you want. It will look like the following: You can use showforms() to list all forms once you used go… to browse to the site you want to login. Just try it from the python interpreter
AttributeError: Can only use .str accessor with string values, which use np.object_ dtype in pandas
As the error states, you can only use .str with string columns, and you have a float64. There won’t be any commas in a float, so what you have won’t really do anything, but in general, you could cast it first: For example:
Python 2: AttributeError: ‘list’ object has no attribute ‘strip’
strip() is a method for strings, you are calling it on a list, hence the error. To do what you want, just do Since, you want the elements to be in a single list (and not a list of lists), you have two options. Create an empty list and append elements to it. Flatten the … Read more
AttributeError: ‘Tensor’ object has no attribute ‘_keras_history’
I looked for all the “‘Tensor’ object has no attribute ***” but none seems related to Keras (except for TensorFlow: AttributeError: ‘Tensor’ object has no attribute ‘log10’ which didn’t help)… I am making a sort of GAN (Generative Adversarial Networks). Here you can find the structure. I pretrained model_2, and model_3. The thing is I … Read more
Creating lowpass filter in SciPy – understanding methods and units
A few comments: The Nyquist frequency is half the sampling rate. You are working with regularly sampled data, so you want a digital filter, not an analog filter. This means you should not use analog=True in the call to butter, and you should use scipy.signal.freqz (not freqs) to generate the frequency response. One goal of … Read more
Replacing a character from a certain index
How can I replace a character in a string from a certain index? For example, I want to get the middle character from a string, like abc, and if the character is not equal to the character the user specifies, then I want to replace it. Something like this maybe?