I have a smart contract address for security tokens, and certain functions of it are protected by access rights, for which I have an address to access those functions, however I am not able to figure out, how to call that function by specifying the rights. Can someone tell me, how do I provide the access righ…
How to import r-packages in Python
I’m a bit troubled with a simple thing. I was trying to install a package called hunspell, but I discovered it is originally an R package. I installed this version: https://anaconda.org/conda-forge/r-hunspell, but I’m not being able to import it. Is this package supposed to work with Python? Shoul…
How to tie weights between transposed layers?
I have try to tied weights in tensorflow 2.0 keras, with below code. but it shows this errors? does anyone know how to write tied weights dense layer ? Errors Answer It took much of my time to figure out, but I think this is the way of Tied Weights by subclassing Keras Dense layer. Hope it can help someone
Cleaning up data frame and date time
I am working with data frame. One of the columns contains date where the format of cell are mixed between date, time and string. The sample date frame is as follow: I want to create a new column that contains the text of date column. The expected output is as follows: How can I do that? Answer IIUC using to_d…
Why is `object` an instance of `type` and `type` an instance of `object`?
I am a little bit confused about the object and type classes in Python 3. Maybe someone can clear up my confusion or provide some additional information. My current understanding is that every class (except object) inherits from a base class called object. But every class (including object) is also an instanc…
Are there disadvantages of using __slots__?
I’m using Python 3.7 and Django. I was reading about __slots__ . Evidently, __slots__ can be used to optimize memory allocation for a large number of those objects by listing all the object properties ahead of time. My perhaps obvious question is why wouldn’t we want to do this for all objects? Ar…
How to detect and find checkboxes in a form using Python OpenCV?
I have several images for which I need to do OMR by detecting checkboxes using computer vision. I’m using findContours to draw contours only on the checkboxes in scanned document. But the algorithm extracts each and every contours of the text. Input Image: Answer Obtain binary image. Load the image, gra…
Modify this program so that before it creates the window, it prompts the user to enter the desired background color
When I write a script and run it. Python Terminal starts doing it, but when it comes to prompting a color my program skips this step. The goal is: Modify this program so that before it creates the window, it prompts the user to enter the desired background color. It should store the user’s responses in a vari…
How to combine 2 dataframe histograms in 1 plot?
I would like to use a code that shows all histograms in a dataframe. That will be df.hist(bins=10). However, I would like to add another histograms which shows CDF df_hist=df.hist(cumulative=True,bins=100,density=1,histtype=”step”) I tried separating their matplotlib axes by using fig=plt.figure()…
Training a simple model in Tensorflow GPU slower than CPU
I have set up a simple linear regression problem in Tensorflow, and have created simple conda environments using Tensorflow CPU and GPU both in 1.13.1 (using CUDA 10.0 in the backend on an NVIDIA Quadro P600). However, it looks like the GPU environment always takes longer time than the CPU environment. The co…