python-3.6

问题 Ive read the docs, but did not find any mention of this. Is it possible to pass parameters to a custom logging.handler class inside a json configuration file? "handlers": { "custom_handler": { "class": "logging.CustomHandler", "args": ['a', 'b'] # <------------------------ "level": "INFO", "formatter": "custom" } }, Where the handler class definition is : class CustomHandler(logging.Handler): def __init__(self, argA, argB): super().__init__() self.a = argA self.b = argB def emit(self, record)

问题 Ive read the docs, but did not find any mention of this. Is it possible to pass parameters to a custom logging.handler class inside a json configuration file? "handlers": { "custom_handler": { "class": "logging.CustomHandler", "args": ['a', 'b'] # <------------------------ "level": "INFO", "formatter": "custom" } }, Where the handler class definition is : class CustomHandler(logging.Handler): def __init__(self, argA, argB): super().__init__() self.a = argA self.b = argB def emit(self, record)

问题 How to split image to RGB colors and why doesn't split() function work? from PIL import Image pil_image = Image.fromarray(some_image) red, green, blue = pil_image.split() red.show() Why does red.show() shows image in greyscale instead of red scale? PS. The same situation using green.show() and blue.show() . 回答1: I've created a script that takes an RGB image, and creates the pixel data for each band by suppressing the bands we don't want. RGB to R__ -> red.png RGB to _G_ -> green.png RGB to _

问题 How to split image to RGB colors and why doesn't split() function work? from PIL import Image pil_image = Image.fromarray(some_image) red, green, blue = pil_image.split() red.show() Why does red.show() shows image in greyscale instead of red scale? PS. The same situation using green.show() and blue.show() . 回答1: I've created a script that takes an RGB image, and creates the pixel data for each band by suppressing the bands we don't want. RGB to R__ -> red.png RGB to _G_ -> green.png RGB to _

问题 In this trivial example, I want to factor out the i < 5 condition of a list comprehension into it's own function. I also want to eat my cake and have it too, and avoid the overhead of the CALL_FUNCTION bytecode/creating a new frame in the python virtual machine. Is there any way to factor out the conditions inside of a list comprehension into a new function but somehow get a disassembled result that avoids the large overhead of CALL_FUNCTION ? import dis import sys import timeit def my_filter

问题 Disclaimer : I'm new to Python in general. I have a small experience with Go, where implementing a queue using a channel is really easy. I want to know how can I implement a Queue with ProcessPoolExecutor in Python 3. I want my N number of process to access a single queue so that I can just insert many jobs in the queue via the main thread, then the processes will just grab the jobs in the Queue. Or if there is a better way to share a list/queue between multiple processes. (Job Queue/ Worker

问题 Disclaimer : I'm new to Python in general. I have a small experience with Go, where implementing a queue using a channel is really easy. I want to know how can I implement a Queue with ProcessPoolExecutor in Python 3. I want my N number of process to access a single queue so that I can just insert many jobs in the queue via the main thread, then the processes will just grab the jobs in the Queue. Or if there is a better way to share a list/queue between multiple processes. (Job Queue/ Worker

问题 I am making a game, and I need to load some password protected audio files from a .zip file, but I get this error: io.UnsupportedOperation: seek io.UnsupportedOperation: seek io.UnsupportedOperation: seek b'hey you did it!' #THIS IS FROM THE PROGRAM Traceback (most recent call last): File "C:\Python36\lib\zipfile.py", line 849, in read data = self._read1(n) File "C:\Python36\lib\zipfile.py", line 917, in _read1 data += self._read2(n - len(data)) File "C:\Python36\lib\zipfile.py", line 949, in

问题 i'm installing github's python-weka-wrapper with the latest version. i've installed other library with "pip install ___". but i got this error code when i'm trying to install the python-weka-wrapper pkg Collecting python-weka-wrapper Using cached python-weka-wrapper-0.3.10.tar.gz Complete output from command python setup.py egg_info: Traceback (most recent call last): File "<string>", line 1, in <module> File "/private/var/folders/sf/fwjdy8n10j721jhhp85cpbz40000gn/T/pip-build-xdr96_le/python

问题 So I'm programming a game and I need a datatype that can store a multitude of variables ranging from lists , tuples , strings and integers . I'm torn between using either dictionaries or namedtuples . GameData = namedtuple('GameData', ['Stats', 'Inventory', 'Name', 'Health']) current_game = GameData((20,10,55,3), ['Sword', 'Apple', 'Potion'], 'Arthur', 100) GameData = {'Stats': (20,10,55,3), 'Inventory': ['Sword', 'Apple', 'Potion'], 'Name': 'Arthur', 'Health': 100} You see, the biggest