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If you are using cv2 or opencv-python and then building the application through docker you will get an importerror: libgl.so.1: cannot open shared object file: no such file or directory.

The best solution is to install the - headless package

headless package does not have GUI dependencies, therefore it reduces the container image size.

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pip uninstall opencv-python
pip install opencv-python-headless

Reference

[Solved] Importerror: libgl.so.1: cannot open shared object file: no such file or directory

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import os
os.environ.update(OMP_NUM_THREADS="1",
                  OPENBLAS_NUM_THREADS="1",
                  MKL_NUM_THREADS="1",
                  VECLIB_MAXIMUM_THREADS='1',
                  NUMEXPR_NUM_THREADS="1")
import numpy as np
import cv2
cv2.setNumThreads(1)

Posted on Edited on

Install FreeRDP

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sudo apt install freerdp2-x11

Usage

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xfreerdp /v:windows_ip:windows_port /u:username /w:1366 /h:768 /bpp:32 \
	/network:auto +clipboard +fonts +window-drag \
	/a:drive,home,/home/name/share

More

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Usage: xfreerdp [file] [options] [/v:<server>[:port]]
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Posted on

Sometimes, we need to get consistent sorting results like the file browser. At this time, natsort can be used.

Install

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pip install natsort

Usage

sort lists “naturally”

“naturally” is rather ill-defined, but in general it means sorting based on meaning and not computer code point

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>>> a = ['2 ft 7 in', '1 ft 5 in', '10 ft 2 in', '2 ft 11 in', '7 ft 6 in']
>>> sorted(a)
['1 ft 5 in', '10 ft 2 in', '2 ft 11 in', '2 ft 7 in', '7 ft 6 in']
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>>> from natsort import natsorted
>>> a = ['2 ft 7 in', '1 ft 5 in', '10 ft 2 in', '2 ft 11 in', '7 ft 6 in']
>>> natsorted(a)
['1 ft 5 in', '2 ft 7 in', '2 ft 11 in', '7 ft 6 in', '10 ft 2 in']

Sort Paths Like Windows Explorer

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Posted on Edited on

replace

str.``replace(old, new[, count])

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>>> msg='For many different, reasons.'
>>> msg.replace('n', '')
'For may differet, reasos.'
>>> msg.replace('n', '', 1)
'For may different, reasons.'

regular expression

re.``sub(pattern, repl, string, count=0, flags=0)

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>>> msg='For many different, reasons.'
>>> re.sub('n', '', msg)
'For may differet, reasos.'
>>> re.sub('n', '', msg, 1)
'For may different, reasons.'
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>>> msg='For many different, reasons.'
>>> re.sub('(many|reason)', 'tu', msg)
'For tu different, tus.'

maketrans

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