 How to load my fake module every time when `import a real module` in python?
By : MJ98
Date : March 29 2020, 07:55 AM
like below fixes the issue If you're trying to dynamically replace a function, you can do so with an assignment statement, I.E.: To see this in action check out this example: code :
def cleaner():
print("Cleaner from functions!")
def worker():
print("Worker from functions!")
import my.functions
def cleaner():
print("Replacement fake cleaner!")
my.functions.cleaner = cleaner
def method_to_test():
from my.functions import cleaner
from my.functions import worker
cleaner()
worker()
if __name__ == "__main__":
method_to_test()
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Adjust start and end range for time list in Python
By : Elijah Goldberg
Date : March 29 2020, 07:55 AM
Any of those help You can do something like this. Write your own generator which works like range and takes a time-object (which comes from your DB if I understand you correctly) as start and stop (exclusively): code :
#! /usr/bin/python3
import datetime
def timerange(start, stop, step = datetime.timedelta(minutes = 15)):
t = datetime.datetime(2000, 1, 1, start.hour, start.minute)
stop = datetime.datetime(2000, 1, 1 if start <= stop else 2, stop.hour, stop.minute)
while t < stop:
yield t.time()
t += step
nineam = datetime.time(9, 0) #from DB
fivepm = datetime.time(17, 0) #from DB
for t in timerange(nineam, fivepm):
print(t)
def ftimerange(start, stop, step = datetime.timedelta(minutes = 15)):
for t in timerange(start, stop, step):
yield t.strftime('%I:%M%p')
for s in ftimerange(nineam, fivepm):
print(s)
>>> elevenpm = datetime.time(23, 0)
>>> oneam = datetime.time(1, 0)
>>> for s in ftimerange(elevenpm, oneam): print(s)
...
11:00PM
11:15PM
11:30PM
11:45PM
12:00AM
12:15AM
12:30AM
12:45AM
>>> start = datetime.time(8, 5)
>>> stop = datetime.time(9, 12)
>>> step = datetime.timedelta(minutes = 3, seconds = 22)
>>> for s in ftimerange(start, stop, step): print(s)
...
08:05AM
08:08AM
08:11AM
08:15AM
08:18AM
08:21AM
08:25AM
08:28AM
08:31AM
08:35AM
08:38AM
08:42AM
08:45AM
08:48AM
08:52AM
08:55AM
08:58AM
09:02AM
09:05AM
09:08AM
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 How can I use the content of a imported module in Python without having to write the module's file name every time?
By : KYJ
Date : March 29 2020, 07:55 AM
like below fixes the issue If you're going to be using something from that module frequently then you can import it specifically from the module and then reference it without the name: code :
from random import randint
randint(1,10)
import random as r
r.randint(1,10)
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Is there a way to adjust shutter speed or exposure time of a webcam using Python and OpenCV
By : Xyko Arteiro
Date : March 29 2020, 07:55 AM
it should still fix some issue There is a method available to change properties of VideoCapture object in OpenCV which can be used to set exposure of input image. code :
cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_EXPOSURE, 40)
v4l2-ctl -d /dev/video0 -c exposure_absolute=40
import subprocess
subprocess.check_call("v4l2-ctl -d /dev/video0 -c exposure_absolute=40",shell=True)
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How to adjust the module part of the fully-qualified class name in Python?
By : kotique
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further First of all: You don't need to do this, and you probably don't want to do this. The standard library is full of examples where what the documentation uses as the import location and the actual module information on the object differ: code :
>>> from unittest import TestCase
>>> TestCase
<class 'unittest.case.TestCase'>
>>> class A():
... pass
...
>>> A
<class '__main__.A'>
>>> A.__module__
'__main__'
>>> A.__module__ = 'dir'
>>> A
<class 'dir.A'>
from .a import A
A.__module__ = __name__ # rehome here.
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code :
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