python-3.8

问题 Currently unable to install Pygame via pip: pip install pygame Getting this message: Concerned by it being termed an EOF error, is this an error in the module itself? 回答1: There's dev versions available as of now. Get them via pip install pygame==2.0.0.dev6 回答2: welcome to Stack Overflow Pygame is not compatible with python 3.8 at the moment. I would recommend you to downgrade back to 3.7 and installing with pip there. Let me know how it goes... 回答3: pip is doesn't have pygame up. But there

问题 The usage of {} in Python f-strings is well known to execute pieces of code and give the result in string format (some tutorials here ). However, what does the ' = ' at the end of the expression mean? log_file = open("log_aug_19.txt", "w") console_error = '...stuff...' # the real code generates it with regex log_file.write(f'{console_error=}') 回答1: This is actually a brand-new feature as of Python 3.8. Added an = specifier to f-strings. An f-string such as f'{expr=}' will expand to the text

问题 The usage of {} in Python f-strings is well known to execute pieces of code and give the result in string format (some tutorials here ). However, what does the ' = ' at the end of the expression mean? log_file = open("log_aug_19.txt", "w") console_error = '...stuff...' # the real code generates it with regex log_file.write(f'{console_error=}') 回答1: This is actually a brand-new feature as of Python 3.8. Added an = specifier to f-strings. An f-string such as f'{expr=}' will expand to the text

问题 I'm using Python & okta-aws tools and in order to fetch correct credentials on aws I need to run okta-aws init. But got an error message of Could not read roles from Okta and the system prompted that "Your Pipfile requires python_version 3.7, but you are using 3.8.3 (/usr/local/Cellar/o/1.1.4/l/.venv/bin/python) . I've tried to search all the Pipfiles on the mac and it seems that the Pipflie under my ~/Pipfile and /usr/local/Cellar/python@3.8/3.8.3_2/libexec/bin/Pipfile all have the same

问题 I've been trying to do so for a while. I followed a tutorial which said you should install pyinstaller first. So, I installed it. Then it said you should write pyinstaller --onefile -w file_name.py in cmd. I had an issue with that as well (there was an error). So, I installed another version of pyinstaller. I wrote the same thing, but no .exe file was created, only a new folder named " pycache " with a new .pyc file inside (I suppose it's a version of the file I wanted to turn into .exe).

问题 I've been trying to do so for a while. I followed a tutorial which said you should install pyinstaller first. So, I installed it. Then it said you should write pyinstaller --onefile -w file_name.py in cmd. I had an issue with that as well (there was an error). So, I installed another version of pyinstaller. I wrote the same thing, but no .exe file was created, only a new folder named " pycache " with a new .pyc file inside (I suppose it's a version of the file I wanted to turn into .exe).

问题 I just learned that the new walrus operator ( := ) can't be used to set instance attributes, it's supposedly invalid syntax (raises a SyntaxError ). Why is this? (And can you provide a link to official docs mentioning this?) I looked through PEP 572, and couldn't find if/where this is documented. Research This answer mentions this limitation without an explanation or source: you can't use the walrus operator on object attributes Sample Code class Foo: def __init__(self): self.foo: int = 0 def

问题 Five out of ten times Pytube will send me this error when attempting to run my small testing script. Here's the script: import pytube import urllib.request from pytube import YouTube yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') print('Youtube video title is: ' + yt.title + '! Downloading now!') Here's what I get: Traceback (most recent call last): File "youtube.py", line 6, in <module> yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') File "C:\Users\test\AppData\Local

问题 Five out of ten times Pytube will send me this error when attempting to run my small testing script. Here's the script: import pytube import urllib.request from pytube import YouTube yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') print('Youtube video title is: ' + yt.title + '! Downloading now!') Here's what I get: Traceback (most recent call last): File "youtube.py", line 6, in <module> yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') File "C:\Users\test\AppData\Local

问题 Five out of ten times Pytube will send me this error when attempting to run my small testing script. Here's the script: import pytube import urllib.request from pytube import YouTube yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') print('Youtube video title is: ' + yt.title + '! Downloading now!') Here's what I get: Traceback (most recent call last): File "youtube.py", line 6, in <module> yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM') File "C:\Users\test\AppData\Local