What I learned new this week (week 15)

1. In Python Opencv, use this snippet to read each frame of a video as a image.

import cv2

path = 'path/to/video.mp4'
vidcap = cv2.VideoCapture(path)

success, image = vidcap.read()
if not success:
    raise Exception('video not found')

cv2.imshow('video frame', image)
cv2.waitKey(0)

while success:
    success, image = vidcap.read()
    cv2.imshow('video frame', image)
    cv2.waitKey(0)

2. Total size of python torch package is around 2824 MB which is around 2.76 GB.

3. In Python, to convert a CSV file data into dictionary use built-in csv module’s csv.DictReader(file). Example :-

import csv

with open('path/to/file.csv', 'r') as file:
    reader = csv.DictReader(file)
    data: list[dict] = list(reader)
    print(data)

4. I just learned today that the sine, cosine of trigonometry have a generic name. And the generic name is Trigonometric Function. I am feeling so dumb today.

That’s it for this week. Meeting you next week.