Python

Python raises “could not convert string to float” error when you try to convert a string that cannot be parsed as a floating-point number. Empty String Conversion If you try to convert an empty string to float, you will get the “could not convert string to float” error. print(float(”)) Output ValueError: could not convert string … Read more

Use a list comprehension to get a square of each list element in Python. The list comprehension returns a new list containing squared elements. Example 1 numbers = [11, 21, 19, 30, 46] squaredValues = [number ** 2 for number in numbers] print(‘Original Values: ‘, numbers) print(‘Squared Values: ‘, squaredValues) Output Original Values: [11, 21, … Read more

To print an error in Python, you can use the try-except block. The try block is similar to the if statement and the testing code is kept inside the try block. If the code raises an error, it is handled in an except statement. If the code does not raise any error, then this code is … Read more

To print float values in Python, you can use the print() function. Another way is to use the str.format() function with “{:.2f}” as str, which formats the float value with two decimal places. The str.format() function formats the specified value and inserts them inside the string’s placeholder. Then use the print() function with the formatted … Read more

To play the video from a file, you must provide the video path in the VideoCapture() method. It is similar to capturing from the camera by changing the camera index with the file name. The time must be appropriate for the cv2.waitKey() function, and if the time is high, the Video will be slow. On … Read more

The main difference between Numpy matrices and Numpy arrays is that Numpy matrices are strictly two-dimensional, while numpy arrays (ndarrays) are N-dimensional. Matrix objects are the subclass of the ndarray, so they inherit all the attributes and methods of ndarrays. The main advantage of numpy matrices is that they provide a convenient notation for matrix multiplication: … Read more

To save a video using the cv2 library in Python, use cv2.VideoWriter_fourcc() method. The cv2.VideoWriter_fourcc() function creates a four-character code (FourCC) that specifies the video codec to be used when writing a video file. The FourCC code is a sequence of four characters to identify the codec. Syntax cv2.VideoWriter(filename, fourcc, fps, frameSize) Parameters filename: Input … Read more

The ImportError: cannot import name ‘url’ from ‘django.conf.urls’ error occurs in Django when django.conf.urls.url()  module has been deprecated and removed in version 4 of Django, but you are still trying to import it. To fix the ImportError: cannot import name ‘url’ from ‘django.conf.urls’ error, replace the url() with re_path(). The re_path uses regexes like url, so you … Read more

Python raises ModuleNotFoundError: no module named ‘transformers’ error when the “transformers” module is not installed in your development environment. You can fix the ModuleNotFoundError: no module named ‘transformers’ error by installing the “transformers” module using this command: pip install transformers. The “transformers” module for Natural Language Processing (NLP) provides access to pre-trained transformer models. With the … Read more

Python raises ModuleNotFoundError: no module named ‘skbuild’ error when the “skbuild” module is not installed in your environment. The easy fix for the ModuleNotFoundError: no module named ‘skbuild’ error is to install the “scikit-build” library using this command: pip install scikit-build. If you try to import a package that depends on “skbuild” and the module is not … Read more