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Thread: why I can't use "try" without "expect"
Post: RE: why I can't use "try" without "expect"
| You should avoid a bare except, because it will catch all exceptions, which could lead into errors you won't able to find.
If you don't know, which exception when occurs, test it in the REPL.
import... |
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DeaD_EyE |
General Coding Help |
4 |
209 |
May-17-2024, 12:25 PM |
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Thread: which way would be better?
Post: RE: which way would be better?
| Maybe it's worth to reuse existing code ©.
import stat
from pathlib import Path
def filemode(file: str | Path) -> str:
"""
Returns the first character from stat.filemode() call.
... |
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DeaD_EyE |
General Coding Help |
3 |
320 |
May-11-2024, 10:33 PM |
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Thread: strange result in xor
Post: RE: strange result in xor
| a = 80
b = 10
c = a ^ b
# print it as binary representation with 8 bit
print(f"{c:08b}")
# print it as binary representation with 16 bit
print(f"{c:016b}")The f before the quotes means format-stri... |
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DeaD_EyE |
General Coding Help |
6 |
343 |
May-07-2024, 07:04 PM |
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Thread: Equivalent Python code from VBA
Post: RE: Equivalent Python code from VBA
| import subprocess
from subprocess import CREATE_NO_WINDOW
# use better names
# use forward slahes to avoid complications with backslashes
program = "C:/Program Files (x86)/SPACE GASS 14/sgwin.exe"
s... |
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DeaD_EyE |
General Coding Help |
4 |
1,073 |
May-02-2024, 10:17 PM |
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Thread: using mutable in function defintion as optional paramter
Post: RE: using mutable in function defintion as optiona...
| (Apr-27-2024, 04:57 PM)Pedroski55 Wrote: Is there a good reason why we should not pass the dictionary we want modified by name?
It's not expected that a function mutates objects from the arguments. ... |
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DeaD_EyE |
General Coding Help |
8 |
576 |
Apr-27-2024, 07:22 PM |
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Thread: if else statements
Post: RE: if else statements
| If you want to compare a user-input of equality, but case-insensitive, then lower the user-input and compare it only with the lower variant of the string.
...
user_input = input("Do your choice: ")
... |
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DeaD_EyE |
General Coding Help |
8 |
4,047 |
Apr-25-2024, 07:27 AM |
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Thread: match case
Post: RE: match case
| If you just want to check for types, then do not forget to use parenthesis.
Wrong:
obj = 42
match obj:
case str:
print(obj, "is a string")
case int:
print(obj, "is an int")Er... |
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DeaD_EyE |
Code sharing |
1 |
180 |
Apr-23-2024, 09:53 AM |
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Thread: Loop through all files in a directory?
Post: RE: Loop through all files in a directory?
| TypeHints are not required, but they help the developers of libraries to communicate what a method/function is expecting and what it should return.
Quote:What I don't like with the pathlib solution i... |
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DeaD_EyE |
General Coding Help |
10 |
611 |
Apr-23-2024, 09:14 AM |
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Thread: Loop through all files in a directory?
Post: RE: Loop through all files in a directory?
| Use Path from pathlib module.
This is the modern way to handle paths.
Mostly all methods, which are functions in os and os.path for path handling, are attached to the Path object. Some are missing, b... |
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DeaD_EyE |
General Coding Help |
10 |
611 |
Apr-22-2024, 07:17 PM |
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Thread: A function that checks if the list is sorted
Post: RE: A function that checks if the list is sorted
| The useful function itertools.pairwise was added to Python 3.10.
https://docs.python.org/3/library/iterto...s.pairwise
This isn't Pythonic: range(len(something))
from itertools import pairwise
fro... |
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DeaD_EyE |
Homework |
16 |
17,132 |
Apr-22-2024, 09:14 AM |
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Thread: yield from
Post: RE: yield from
| # removed the * in front of iterables
print("Definition of generator-function")
def join(iterables, joiner):
print("First step of generator")
# spliting iterable in first iterable and the re... |
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DeaD_EyE |
General Coding Help |
4 |
431 |
Apr-19-2024, 07:58 PM |
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Thread: Waiting for input from serial port, then move on
Post: RE: Waiting for input from serial port, then move ...
| (Apr-17-2024, 06:45 AM)feistycavities Wrote: The issue with your while loop not closing is because you have an embedded for loop in your code.
The cause was the condition of while. In the code there... |
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DeaD_EyE |
General Coding Help |
3 |
1,269 |
Apr-17-2024, 07:21 AM |
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Thread: python calculate float plus float is incorrect?
Post: RE: python calculate float plus float is incorrect...
| I don't know what PHP does to prevent the visible inaccuracy.
In modern programming languages, you don't see the real floating point value inclusive PHP.
An algorithm is used, to show the user a nic... |
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DeaD_EyE |
General Coding Help |
6 |
460 |
Apr-16-2024, 01:45 PM |
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Thread: Need to get around SSL: CERTIFICATE_VERIFY_FAILED
Post: RE: Need to get around SSL: CERTIFICATE_VERIFY_FAI...
| I do not have this problem. I was able to connect to api.polygon.io:443 on Windows 11 with Python 3.12.2 x64.
btw. Python 3.12.3 is out
import socket
import ssl
addr = ("api.polygon.io", 443)
ctx ... |
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DeaD_EyE |
General Coding Help |
3 |
372 |
Apr-16-2024, 07:50 AM |
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Thread: Hide CMD call window
Post: RE: Hide CMD call window
| windows ...
import subprocess
def arp():
"""
Run arp -a and return the stripped output.
Window creation is prevented.
"""
flags = subprocess.CREATE_NO_WINDOW
return sub... |
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DeaD_EyE |
General Coding Help |
8 |
484 |
Apr-15-2024, 08:56 PM |
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Thread: How do I parse the string?
Post: RE: How do I parse the string?
| If you need a path, a Path object is maybe what you want.
Code is based on Gribouillis example:
from urllib.parse import urlparse
from pathlib import PurePosixPath
def url2path(url: str) -> Pure... |
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DeaD_EyE |
General Coding Help |
4 |
445 |
Apr-10-2024, 10:26 AM |
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Thread: Next/Prev file without loading all filenames
Post: RE: Next/Prev file without loading all filenames
| Here as a class with type hints. mypy does not complain :-)
This loads the whole directory content for the first time, and then only if the sort_function has been changed.
The __init__ method makes th... |
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DeaD_EyE |
General Coding Help |
9 |
779 |
Apr-08-2024, 07:58 AM |
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Thread: a better way to code this to fix a URL?
Post: RE: a better way to code this to fix a URL?
| If the url should always start with https even, if only a hostname is given, you could use this:
from urllib.parse import urlsplit, urlunsplit
def conv2(url):
return urlunsplit(("https", *urlsp... |
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DeaD_EyE |
News and Discussions |
10 |
1,005 |
Mar-19-2024, 09:15 AM |
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Thread: list.sort() returning None
Post: RE: list.sort() returning None
| (Mar-18-2024, 10:39 AM)Pedroski55 Wrote: **smile** **smile** **smile**
Dead_EyE: a very accurate shooter (and reader?)
Quote:You can also use the list.sort() method. It modifies the list in-pla... |
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DeaD_EyE |
General Coding Help |
8 |
728 |
Mar-18-2024, 08:16 PM |
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Thread: Anyway to stop a thread and continue it?
Post: RE: Anyway to stop a thread and continue it?
| Example with a queue:
import time
from random import randint
from queue import Queue
from threading import Thread
def fake_feed():
"""
Generator function which yields
endless values fro... |
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DeaD_EyE |
General Coding Help |
2 |
410 |
Mar-18-2024, 10:53 AM |
