I’m making a tkinter app with a background image and three labels. The problem that I have is that these labels have a white background and I don’t want that. I want to make like a “png” label, with no background. First, I tried to put this line of code: But it didn’t work, liter…
OpenCV 4.0.0 SystemError: returned a result with an error set
Hello I am trying to create a facial recognition program but I have a peculiar error: here is my code: and this error is the output I have “lbpcascade_frontalface.xml” in the working directory so that shouldn’t be an issue if it helps when I enter I get Answer New Answer OpenCV seems to now …
How to delete the 0’s before the number if the number does not require them?
I’m making a program that prints all possible mixtures of numbers from 0 to 9 and I want to delete the numbers that my code puts before the actual number if the output is less than 6 places. I’ve tried putting “” before 0 in every array, but it also puts random spaces in the output. So…
InvalidArgumentError: cannot compute MatMul as input #0(zero-based) was expected to be a float tensor but is a double tensor [Op:MatMul]
Can somebody explain, how does TensorFlow’s eager mode work? I am trying to build a simple regression as follows: Gradient output: [None, None, None, None, None, None] The error is following: Edit I updated my code. Now, the problem comes in gradients calculation, it is returning zero. I have checked th…
Non-blocking launching of concurrent coroutines in Python
I want to execute tasks asynchronously and concurrently. If task1 is running when task2 arrives, task2 is started right away, without waiting for task2 to complete. Also, I would like to avoid callbacks with the help of coroutines. Here’s a concurrent solution with callbacks: Its output: And here’…
ImportError: libcuda.so.1: cannot open shared object file
When I run my code with TensorFlow directly, everything is normal. However, when I run it in a screen window, I get the following error. I have tried the command: But it doesn’t work. Cause I use ssh to connect to the servers, the screen is necessary. How can I fix it? Answer Try to put libcuda.so.1 pat…
What is the advantage of saving `.npz` files instead of `.npy` in python, regarding speed, memory and look-up?
The python documentation for the numpy.savez which saves an .npz file is: The .npz file format is a zipped archive of files named after the variables they contain. The archive is not compressed and each file in the archive contains one variable in .npy format. […] When opening the saved .npz file with l…
PySpark 2.x: Programmatically adding Maven JAR Coordinates to Spark
The following is my PySpark startup snippet, which is pretty reliable (I’ve been using it a long time). Today I added the two Maven Coordinates shown in the spark.jars.packages option (effectively “plugging” in Kafka support). Now that normally triggers dependency downloads (performed by Spa…
Transforming a pandas df to a parquet-file-bytes-object
I have a pandas dataframe and want to write it as a parquet file to the Azure file storage. So far I have not been able to transform the dataframe directly into a bytes which I then can upload to Azure. My current workaround is to save it as a parquet file to the local drive, then read it as
GroupBy columns on column header prefix
I have a dataframe with column names that start with a set list of prefixes. I want to get the sum of the values in the dataframe grouped by columns that start with the same prefix. The only way I could figure out how to do it was to loop through the prefix list, get the columns from the dataframe