It could be due to the architecture of your OS. Is your OS 64 Bit and have you installed 64 bit version of Python? It may help to install both 32 bit version Python 3.1 and Pygame, which is available officially only in 32 bit and you won’t face this problem. I see that 64 … Read more
You could generate the subarrays using as_strided: import numpy as np a = np.array([[ 0, 1, 2, 3, 4], [ 5, 6, 7, 8, 9], [10, 11, 12, 13, 14], [15, 16, 17, 18, 19], [20, 21, 22, 23, 24]]) sub_shape = (3,3) view_shape = tuple(np.subtract(a.shape, sub_shape) + 1) + sub_shape strides = a.strides + … Read more
Expressed as a generator function: def neighborhood(iterable): iterator = iter(iterable) prev_item = None current_item = next(iterator) # throws StopIteration if empty. for next_item in iterator: yield (prev_item, current_item, next_item) prev_item = current_item current_item = next_item yield (prev_item, current_item, None) Usage: for prev,item,next in neighborhood(l): print prev, item, next
Open a terminal and take a look at: /Applications/Python 3.6/Install Certificates.command Python 3.6 on MacOS uses an embedded version of OpenSSL, which does not use the system certificate store. More details here. (To be explicit: MacOS users can probably resolve by opening Finder and double clicking Install Certificates.command)
Manager proxy objects are unable to propagate changes made to (unmanaged) mutable objects inside a container. So in other words, if you have a manager.list() object, any changes to the managed list itself are propagated to all the other processes. But if you have a normal Python list inside that list, any changes to the … Read more
Python 3.3+ from abc import ABCMeta, abstractmethod class A(metaclass=ABCMeta): def __init__(self): # … pass @property @abstractmethod def a(self): pass @abstractmethod def b(self): pass class B(A): a = 1 def b(self): pass Failure to declare a or b in the derived class B will raise a TypeError such as: TypeError: Can’t instantiate abstract class B with … Read more
For anyone who still wonders on how to fix this, i got mine by installing the “Install Certificates.command“ Here is how I did, Just double click on that file wait for it to install and in my case, you will be ready to go
The logging.getLogger() is returns the same instance for a given name. (Documentation) The problem is that every time you call myLogger(), it’s adding another handler to the instance, which causes the duplicate logs. Perhaps something like this? import os import time import datetime import logging loggers = {} def myLogger(name): global loggers if loggers.get(name): return … Read more
The Tkinter package from Python 2 has been renamed to tkinter in Python 3, as well as other modules related to it. Here is a list of renamed modules: Tkinter → tkinter tkMessageBox → tkinter.messagebox tkColorChooser → tkinter.colorchooser tkFileDialog → tkinter.filedialog tkCommonDialog → tkinter.commondialog tkSimpleDialog → tkinter.simpledialog tkFont → tkinter.font Tkdnd → tkinter.dnd ScrolledText → … Read more
The function works as follows: # Import the cv2 library import cv2 # Read the image you want connected components of src = cv2.imread(‘/directorypath/image.bmp’) # Threshold it so it becomes binary ret, thresh = cv2.threshold(src,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU) # You need to choose 4 or 8 for connectivity type connectivity = 4 # Perform the operation output = … Read more