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Use the Pillow module for Python to "roll" images horizontally or vertically. When an image is rolled, it is shifted in some direction. The part of the image that would be lost as a result of that shift is added onto the opposite side of the image.

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sloanlance

𝐀 = {'😀': 5}
for ℹ︎ in range(20):
    # print(i, ℹ︎, i == ℹ︎)  # NameError: name 'i' is not defined.
    for _,__ in 𝐀.items():
        if __ == ℹ︎:
            print(_, ℹ︎)

print(𝐀)  # Prints dictionary in 𝐀
print(A)  # Also prints dictionary in 𝐀!
print(𝐀 is A)  # True

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class IndexFormatter:
    def __init__(self, volumeId: int):
        self.itemPages = (
            ItemPage.objects.filter(volume__id=volumeId)
            .order_by('item__topic__name', F('page') * 1, 'item__name'))

    def format(self) -> str:
        """
        Format the index for printing.
        """

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sloanlance

Say Goodbye to Loops in Python, and Welcome Vectorization!

Use Vectorization — a super fast alternative to loops in Python

By Anmol Tomar on CodeX

Nov 29, 2022

Introduction

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jq Notebook

Useful notes about using jq.

1. Print all paths to values
   • jq -c paths Prints each path as an array and doesn't show values.
   • jq --stream 'select(.[1]|scalars!=null) | "\(.[0]|join(".")): \(.[1]|tojson)"' example.json
     Nearly perfect. If each path shown began with . and array indices were enclosed in square brackets, then each one would be a valid jq query string.

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yq Notebook

Useful notes about using yq

1. Display the path to each value in a YAML file

   $ cat << EOF | yq e '.. | select(. == "*") | {(path | join(".")): .} ' -
   > a:
   >   b: foo

> c: bar

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#!/bin/sh --

# Set timestamps of files in a cloned git repository to when they were last committed.

# Default: All git-controlled files in current directory, recursively 
if [ ${#} = 0 ]; then
  files="$(git ls-files -z | xargs -0 echo)"
else
  files="${@}"
fi

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import boto3
import os
from contextlib import closing
from botocore.exceptions import ClientError


def object_exists(s3, bucket, key):
    try:
        boto3.resource('s3').Object(bucket, key).load()
        return True