Re: ChatGPT Generated news poster code
Hello, On 2/11/23 03:31, Greg Ewing via Python-list wrote: For a moment I thought this was going to be a script that uses ChatGPT to generate a random news post and post it to Usenet... Which would also have been kind of cool, as long as it wasn't overused. Actually, I like cynical humor too ... But this is too much -Roland -- https://mail.python.org/mailman/listinfo/python-list
Re: Unable to completely remove Python 3.10.9 (64 bit) from Computer
On 25.9.2023 19.58, Pau Vilchez via Python-list wrote: Hello Python Team, I am somehow unable to completely remove Python 3.10.9 (64 Bit) from my computer. I have tried deleting the Appdata folder then repairing and then uninstalling but it still persists in the remove/add program function in windows 10. I am just trying to reinstall it because I didn’t add it to the path correctly, any help is greatly appreciated. This is a Windows issue and not actually Python -specific. It may happen to every program you install. If something is installed by the normal way using the W10 installer it should be removable too. If not there should be some error. Very Respectfully, Pau Vilchez -- https://mail.python.org/mailman/listinfo/python-list
Re: Return
Hello,
On 12/8/21 11:29, vani arul wrote:
Thanks for your help.
I am not good at programming.My code works perfectly.But I am bit
confused about the return values.
Binary Search Program
/def Binarysearch(a,key):
l=0
r=len(a)-1
while l<=r:
med = (l+r)//2
if key==a[med]:
return med
elif key>a[med]:
l=med+1/
/ elif keyBut in the following block,how does it return values if there is no
return specified?
First of all please reply always to the list address!
If Python does not encounter a return statement it will continue to run
the function.
In your example the while loop will continue until the condition 'l<=r'
is true. If Python exits the while loop then there is a return -1.
BR,
Roland
Regards
Vani
On Wed, Dec 8, 2021 at 2:15 AM Roland Mueller
wrote:
Hello
ti 7. jouluk. 2021 klo 19.47 vani arul (arulvan...@gmail.com)
kirjoitti:
Hey There,
Can someone help to understand how a python function can
return value with
using return in the code?
It is not not about explicit or implicit function call.
Not sure whether I understood your question: I have a simple
example about return.
* f() and h() explicitely return something
* g() and h() return None
BTW, also Python documentation tool pydoc has an article about return.
#!/usr/bin/python
def f():
return 42
def g():
pass
def h():
return
if __name__ == "__main__":
print(f"f(): {f()}")
print(f"g(): {g()}")
print(f"h(): {h()}")
Result:
f(): 42
g(): None
h(): None
Pydoc:
$ pydoc return
BR,
Roland
Thanks
Vani
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Re: Hot reload Flask app?
On 2020-10-01 16:33, sjeik_ap...@hotmail.com wrote: Hi, I would like to create a "/reload" view in my Flask app, so I could easily and safely reload it when code, templates etc change. Similar to what happens when running the app with the debug server. I am using Nginx and Gevent on a recent Ubuntu system with Python 3.6. My strategy would be to gracefully stop Gevent [1], then do os.kill(os.getpid(), signal.SIGHUP). I have not yet tried this (not working today!). Just wondering if there are best practices. Thanks! Albert-Jan [1] http://www.gevent.org/api/gevent.baseserver.html#gevent.baseserver.BaseServer.stop Running flask app.run(debug=True) will make the Flask server watching the filesystem for source code changes and re-deploy your app. https://pythonhosted.org/Flask-Debug/ -Roland -- https://mail.python.org/mailman/listinfo/python-list
Re: Simple question - end a raw string with a single backslash ?
On 10/13/20 4:14 PM, Serhiy Storchaka wrote: 13.10.20 11:52, Tony Flury via Python-list пише: I am trying to write a simple expression to build a raw string that ends in a single backslash. My understanding is that a raw string should ignore attempts at escaping characters but I get this : >>> a = r'end\' File "", line 1 a = r'end\' ^ SyntaxError: EOL while scanning string literal I interpret this as meaning that the \' is actually being interpreted as a literal quote - is that a bug ? r'You can\'t end raw string literal with a single "\"' If backslash be true inner in a raw string, the above literal would end after \'. It would be very hard to write a raw string containing both \' and \", and even \''' and \""" (there are such strings in the stdlib). So you have problem either with trailing backslash, or with inner backslash followed by quotes. Both problems cannot be solved at the same time. Python parser works as it works because initially it was easier to implement, and now this cannot be changed because it would break some amount of correct code. The only solution I have found is to do this : >>> a = r'end' + chr(92) >>> a 'end\\' >>> list(a) ['e', 'n', 'd', '\\'] or >>> a = r'end\\'[:-1] >>> list(a) ['e', 'n', 'd', '\\'] Neither of which are nice. You can also write r'end' '\\'. It is not too nice, but it looks nicer to me then two other variants. I used the triple single quotes as delimiter: >>> s = r'''a single quote ', a double quote "''' >>> s 'a single quote \', a double quote "' BR, Roland -- https://mail.python.org/mailman/listinfo/python-list
Re: Common objects for CLI commands with Typer
On 9/23/24 22:51, Dan Sommers via Python-list wrote: On 2024-09-23 at 19:00:10 +0100, Barry Scott wrote: On 21 Sep 2024, at 11:40, Dan Sommers via Python-list wrote: But once your code gets big the disciple of using classes helps maintenance. Code with lots of globals is problematic. Even before your code gets big, discipline helps maintenance. :-) Every level of your program has globals. An application with too many classes is no better (or worse) than a class with too many methods, or a module with too many functions. Insert your own definitions of (and tolerances for) "too many," which will vary in flexibility. I think the need of classes comes when you need objects thus a set of variables with an identity and that may be created N times. Classes are object factories. A second aspect is inheritance: classes may inherit from other classes and reuse existing functionality and data structures for their objects. In cases where you only need to encapsulate a single set of data and functions modules are the best choice. -- https://mail.python.org/mailman/listinfo/python-list
