python-3.6

问题 I am trying to open a connection and pass a value for a given channel In order to do this I need to open a connection to the enttec open dmx usb. But I am unable to create a connection I tried to list devices and make sure the SN matches with the HW In [34]: import ftd2xx as ft In [35]: ft.listDevices() Out[35]: [b'AL05J8AO'] In [36]: ftd2xx.openEx('AL05J8AO', ftd2xx.ftd2xx.OPEN_BY_SERIAL_NUMBER) --------------------------------------------------------------------------- DeviceError Traceback

问题 I am trying to open a connection and pass a value for a given channel In order to do this I need to open a connection to the enttec open dmx usb. But I am unable to create a connection I tried to list devices and make sure the SN matches with the HW In [34]: import ftd2xx as ft In [35]: ft.listDevices() Out[35]: [b'AL05J8AO'] In [36]: ftd2xx.openEx('AL05J8AO', ftd2xx.ftd2xx.OPEN_BY_SERIAL_NUMBER) --------------------------------------------------------------------------- DeviceError Traceback

问题 I was trying to execute the code below in Google Colab for learning purposes.I got this message when i executed the following code. Tensor("args_0:0", shape=(28, 28, 1), dtype=float32) def normalize(images, labels): print(images) images = tf.cast(images, tf.float32) print(images) images /= 255 print(images) return images, labels I am trying to understand what this message means but I am not able ti understand it. Tried searching in web , but couldn't find much resources. Can anyone say what

问题 I came across this interesting snippet on GitHub that curries functions and decided to try to add annotations. So far I have the following. from typing import cast, Callable, TypeVar, Any, Union from functools import wraps U = TypeVar('U') def curry(f: Callable[..., U]) -> Callable[..., U]: @wraps(f) def curry_f(*args: Any, **kwargs: Any) -> Union[Callable[..., U], U]: if len(args) + len(kwargs) >= f.__code__.co_argcount: return f(*args, **kwargs) # do I need another @wraps(f) here if curry_f

问题 I want to add a discord bot to a group chat, and the only way I know how is to add them as a friend first. How do I make a bot send a friend request? I'm pretty sure its possible. 回答1: Bots cannot have friends https://discordapp.com/developers/#bot-vs-user-accounts Bot accounts have a few differences in comparison to normal user accounts, namely: Bots are added to guilds through the OAuth2 API, and cannot accept normal invites. Bots cannot have friends, nor be added to or join Group DMs .

问题 I'm working with dictionaries and I have the following error '>' not supported between instances of 'dict' and 'dict' I know that there are some problems with dictionaries in Python 2.7 and 3.x version. print("number of nodes %d" % G.number_of_nodes()) print("number of edges %d" % G.number_of_edges()) print("Graph is connected?: %s" % nx.is_connected(G)) print("Number of connected components: %s" % nx.number_connected_components(G)) print("Size of connected componnents: %s" % [len(cc) for cc

问题 I cannot install Spyder through Anaconda Navigator. I am a complete beginner when it comes to Python and I have no idea what's going wrong. I have to create a new environment and open a project there. What I did so far is: through Anaconda Navigator (1.9.7) I created a new environment (with Python 3.6). Then, for this specific environment I try to install Spyder. I click the 'install' button, a progress bar appears and then nothing happens. I tried the same steps on friend's laptop and when I

问题 I cannot install Spyder through Anaconda Navigator. I am a complete beginner when it comes to Python and I have no idea what's going wrong. I have to create a new environment and open a project there. What I did so far is: through Anaconda Navigator (1.9.7) I created a new environment (with Python 3.6). Then, for this specific environment I try to install Spyder. I click the 'install' button, a progress bar appears and then nothing happens. I tried the same steps on friend's laptop and when I

问题 On mac 10.12.6, pip install rpy2 is giving me "Failed building wheel for rpy2" I tried the this. Any ideas what to look at next? Here is the error log: ---------------------------------------- Failed building wheel for rpy2 Running setup.py clean for rpy2 Failed to build rpy2 Installing collected packages: rpy2 Running setup.py install for rpy2 ... error Complete output from command /Users/me/Applications/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders

问题 While trying to answer another question, it dawned on me that you can have code run any time in a thread when you theoretically should not have control. CPython has a settrace function for registering a tracing function in one's code. To test this idea from the use of a class, the following code was written. The problem is that tracing does not seem to occur, and no data is generated in the tracing log. What is causing the problem in the code shown below? #! /usr/bin/env python3 import atexit