python-3.9

问题 This question already has answers here : Installing numpy with pip on windows 10 for python 3.7 (3 answers) Closed 4 months ago . I'm trying to install NumPy but I'm facing an issue. The python ver I'm using is 3.9 and Windows version is 10. The error is as follows: C:>pip3 install numpy Collecting numpy Using cached numpy-1.19.2.zip (7.3 MB) Installing build dependencies ... done Getting requirements to build wheel ... done Preparing wheel metadata ... error ERROR: Command errored out with

问题 When I try to install tensorflow on python 3.9 I get following error: ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none) ERROR: No matching distribution found for tensorflow Is not there any tensorflow for 3.9? What do you guys recommend? Can I install other version of python beside the existing version? 回答1: Right now tensorflow does not have a build for python3.9 The latest one is for python3.8 You can check the build files at PyPI https://pypi

问题 I have a dictionary with strings as keys and sets as values. These sets contain integers, which may be common for different items of the dictionary. Indeed, my goal is to compare each item against the rest and find those common numbers in the set values. Once located a pair of items that at least share a number in their value sets (lets say, (key1, val1) and (key2, val2) ), I want to add an extra item to the dictionary whose key is the concatenation of both keys key1 and key2 (I DO NOT CARE

问题 (In relation to this question I posed a few days ago) I have a dictionary whose keys are strings, and whose values are sets of integers, for example: db = {"a":{1,2,3}, "b":{5,6,7}, "c":{2,5,4}, "d":{8,11,10,18}, "e":{0,3,2}} I would like to have a procedure that joins the keys whose values satisfy a certain generic condition given in an external function. The new item will therefore have as a key the union of both keys (the order is not important). The value will be determined by the

问题 I have tried to staring the application in VSCODE by Python3. This is the code: from tkinter import * window = Tk() window.mainloop() only 3 lines :)) , but when I'm trying to execute the file in terminal it will give me an error, which you can see below. arash@Arash-MacBook-Pro tkinter % python3 main.py macOS 11 or later required ! zsh: abort ------ python3 main.py arash@Arash-MacBook-Pro tkinter % My Mac worked on "Big Sur" and has Python3.9. 回答1: This is an issue in the way brew installs

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last month . Improve this question I'm trying to install "mlxtend" pip install mlxtend via command prompt but it shows a lot of errors. I've gone throw all of them but couldn't understand the reason behind the failure. Please help me to resolve this issue? Screenshot: 回答1: You are trying to install scikit-learn

问题 There s currently no version of pygame for python 3.9 回答1: As of https://github.com/pygame/pygame/pull/2163 there are prebuilt binaries for Python 3.9 starting with pygame version 2.0.0.dev14 . pip install pygame==2.0.0.dev14 回答2: My question is exactly the same as yours. I have tried many methods, but none of them will work. But I succeeded after using this. pip install pygame==2.0.0.dev14 来源： https://stackoverflow.com/questions/64261106/when-i-try-to-install-pygame-using-python-3-9-i-get-an

来源： https://stackoverflow.com/questions/64404523/issues-with-installing-matplotlib-on-windows-10-with-pipwin

来源： https://stackoverflow.com/questions/64404523/issues-with-installing-matplotlib-on-windows-10-with-pipwin

来源： https://stackoverflow.com/questions/64404523/issues-with-installing-matplotlib-on-windows-10-with-pipwin