install poppler in ubuntu

Try to this command:

sudo apt-get update -y

sudo apt-get install -y poppler-utils

😁

Ways to sort list of dictionaries by values in Python – Using lambda function

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#example list

dict_list = [{ "idx":1, "value1":32.44, "value2":123.2}, { "idx":2, "value1":32.414, "value2":133.2}, { "idx":3, "value1":32.244, "value2":113.2}]

#sort by ascending order

sorted_dict_list = sorted(dict_list, key = lambda i: i['value1'])

#sort by descending order

r_sorted_dict_list = sorted(dict_list, key = lambda i: i['value1'],reverse=True)

#show result

print(sorted_dict_list)

# [{'idx': 3, 'value1': 32.244, 'value2': 113.2}, {'idx': 2, 'value1': 32.414, 'value2': 133.2}, {'idx': 1, 'value1': 32.44, 'value2': 123.2}]

print(r_sorted_dict_list)

# [{'idx': 1, 'value1': 32.44, 'value2': 123.2}, {'idx': 2, 'value1': 32.414, 'value2': 133.2}, {'idx': 3, 'value1': 32.244, 'value2': 113.2}]

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multi-thread example python source code

The code generate 10 multi threads for running single_function.
If you have look the pid in result, thread is finished by quickly proceeded.

..

import queue

from concurrent.futures import ThreadPoolExecutor

#function for thread

def single_function(input, pid, out_queue):

total = 0

for i in range(0,input):

for j in range(0, input):

for k in range(0, input):

total = total + 1

out_queue.put( {'index':pid, 'result':total })

#run thread

my_queue = queue.Queue()

with ThreadPoolExecutor(max_workers=10) as executor:

for pid in range(0, 10):

executor.submit(single_function, 100, pid, my_queue)

#get result of each thread

result = {}

while not my_queue.empty():

get = my_queue.get()

print(get)

#finish all thread

..

result

{'index': 1, 'result': 1000000}
{'index': 3, 'result': 1000000}
{'index': 2, 'result': 1000000}
{'index': 0, 'result': 1000000}
{'index': 5, 'result': 1000000}
{'index': 4, 'result': 1000000}
{'index': 8, 'result': 1000000}
{'index': 6, 'result': 1000000}
{'index': 9, 'result': 1000000}
{'index': 7, 'result': 1000000}

get image rect list from pdf

extract all image rect list from pdf using pymupdf
look at the sample code

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#pip install PyMuPDF

#document : https://pymupdf.readthedocs.io/en/latest/

#pip install opencv-python

#github : https://github.com/skvark/opencv-python

import fitz

img_bbox = []

doc1 =fitz.open('test.pdf')

page1 = doc1[0] #first page

d = page1.getText("dict")

blocks = d["blocks"]

imgblocks = [b for b in blocks if b["type"] == 1]

for v in imgblocks:

[x1, y1, x2, y2] = v['bbox']

#print(x1, y1, x2, y2)

img_bbox.append({'left':int(x1), 'top':int(y1), 'right':int(x2), 'bottom':int(y2)})

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