python-3.8

问题 This question already has answers here : How to install Tensorflow with Python3.8 (2 answers) Closed 12 days ago . I got the following error. How to install tensorflow with python3.8? Is it not available on python3.8? $ pip3 install tensorflow ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none) ERROR: No matching distribution found for tensorflow $ pip3 --version pip 20.0.2 from /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site

问题 I am using Msys2 portable under Win 10. I have 2 python 3.8 installations. The original question asked if that is so. I am now certain it is, so for the time being I want to deal with their maintenance. I also posted another related question Msys2: readline in two python installations I am posting below information on both. My questions are: Can they interfere with each other? If so, what steps/configuration should I deal with? ( PYTHONPATH , site-packages , etc.) Would it be safe removing

问题 I am not able to use Tensorflow in Python 3.8. C:\Users\Shail>pip install tensorflow ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none) ERROR: No matching distribution found for tensorflow 回答1: Tensorflow (version: 2.1, as of now) is not supported on python 3.8. It was widely expected for TF2.2 to be supported for 3.8 but tf-nightly for 2.2 as of today's release (18 Jan, 2020) do not have wheel for python 3.8. UPDATE: Even this release (19 Feb,

问题 I am not able to use Tensorflow in Python 3.8. C:\Users\Shail>pip install tensorflow ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none) ERROR: No matching distribution found for tensorflow 回答1: Tensorflow (version: 2.1, as of now) is not supported on python 3.8. It was widely expected for TF2.2 to be supported for 3.8 but tf-nightly for 2.2 as of today's release (18 Jan, 2020) do not have wheel for python 3.8. UPDATE: Even this release (19 Feb,

问题 NOTE: There have been several EDITs to the question, as per comments. They are indicated below, and separated by lines. As of now, the only remaining issue seems to be that numpy cannot load, possibly (but not certainly) due to two alternative python 3.8 systems present. I have updated my msys2 system a couple of months ago. That apparently included an update from python 3.7 to 3.8, but which left me with two broken pythons: I can start python when it is 3.7, but there are no associated

问题 With Python 3.8 Assignment Expressions have been introduced, allowing to assign values in conditionals and lambdas as such: if x := True: print(x) However it appears this does not extends to attribute assignment, as trying to do something like this from typing import NamedTuple class Test(NamedTuple): field : bool test = Test(field=False) if test.field := True: print(test.field) Will result in the following error: SyntaxError: cannot use named assignment with attribute Is it really only

问题 With Python 3.8 Assignment Expressions have been introduced, allowing to assign values in conditionals and lambdas as such: if x := True: print(x) However it appears this does not extends to attribute assignment, as trying to do something like this from typing import NamedTuple class Test(NamedTuple): field : bool test = Test(field=False) if test.field := True: print(test.field) Will result in the following error: SyntaxError: cannot use named assignment with attribute Is it really only

问题 I am install python 3.8.0v and run pip install opencv-python its give me error. ERROR: Could not find a version that satisfies the requirement opencv-python (from versions: none) ERROR: No matching distribution found for opencv-python 回答1: It seems opencv does not work on Python 3.8 yet, see this issue: https://github.com/skvark/opencv-python/issues/253 回答2: You can also refer to this question also Similar Question What you can also try is installing opencv-contrib-python using pip.I have

问题 I am install python 3.8.0v and run pip install opencv-python its give me error. ERROR: Could not find a version that satisfies the requirement opencv-python (from versions: none) ERROR: No matching distribution found for opencv-python 回答1: It seems opencv does not work on Python 3.8 yet, see this issue: https://github.com/skvark/opencv-python/issues/253 回答2: You can also refer to this question also Similar Question What you can also try is installing opencv-contrib-python using pip.I have

问题 Like many others, I suffered from seeing an 'extra window' titled 'tk'. None of the answers helped, until I stumbled on the solution shown below: import tkinter as tk root = tk.Tk() root.geometry('500x500') ########### Comment out to see the 'two tk' problem root.resizable(width=False, height=False) ########### button = tk.Button(root) button["text"]= 'X' button.pack() root.mainloop() I'm running under OSX 10.15.2, with Python 3.8. Any ideas? I appreciate it might just be my system, but I am