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Thread: [] vs *[]
Post: RE: [] vs *[]
| Thanks vert much bowlofred. That does clearly explains the reasons behind the error.
I also noticed a small performance differences between unpacking vs sending the list. To my surprise unpacking pe... |
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hshivaraj |
General Coding Help |
3 |
1,273 |
Jan-29-2022, 04:45 PM |
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Thread: [] vs *[]
Post: [] vs *[]
| Hey guys
what the different between sending a send as [] and *[]? For instance
def main():
x = [1] * 10
print(list(chain(*x)))
print(list(chain(x)))Error:Traceback (most recent call last... |
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hshivaraj |
General Coding Help |
3 |
1,273 |
Jan-28-2022, 11:34 PM |
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Thread: is and '==' i'm confused
Post: is and '==' i'm confused
| Hi all
>>> a = "this is test string"
>>> b = "this is test string"
>>> a == b
True
>>> a is b
False
>>> a = "test"
>>> b = "test"
>>>... |
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hshivaraj |
General Coding Help |
6 |
2,720 |
Sep-12-2021, 02:58 PM |
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Thread: Dtype STR but output in Shell still int?
Post: RE: Dtype STR but output in Shell still int?
| Thanks. Thats the source code.
But i was asking for the CSV file your reading? |
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hshivaraj |
General Coding Help |
6 |
2,277 |
Oct-04-2020, 01:18 PM |
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Thread: Store a set in a dictionary's value
Post: RE: Store a set in a dictionary's value
| Something like this?
from collections import defaultdict
def get_dict(team_list):
year = 1903
winning_dict = defaultdict(set)
for index in team_list:
winning_dict[index].add(yea... |
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hshivaraj |
General Coding Help |
9 |
3,219 |
Oct-04-2020, 01:17 PM |
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Thread: Dtype STR but output in Shell still int?
Post: RE: Dtype STR but output in Shell still int?
| Could you show us the first few lines of your CSV file? |
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hshivaraj |
General Coding Help |
6 |
2,277 |
Oct-04-2020, 01:11 PM |
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Thread: Coin Toss - Distribution
Post: RE: Coin Toss - Distribution
| Frankly I dont see what the script is doing. Your using variable x twice which is going to cause issues.
Remember tail as a list is created every time for the outer loop and in the inner loop being m... |
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hshivaraj |
General Coding Help |
6 |
3,122 |
Oct-04-2020, 01:02 PM |
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Thread: Graph identifier
Post: RE: Graph identifier
| This is jjst a brut force method with no complications.
Let for instance assume that movements are stores in a list
mov1 = [10000, 10120, 10080, 9990, 10050, 10210]
The next step is to find the di... |
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hshivaraj |
General Coding Help |
4 |
2,669 |
Oct-04-2020, 12:52 PM |
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Thread: Coin Toss - Distribution
Post: RE: Coin Toss - Distribution
| Negative indexing reads value from backwards. For instance
>>> a = [1, 2, 3]
>>> a[-1]
3
>>> a[-2]
2
>>> a[0]
1
>>> a[1]
2I hope that give some explanati... |
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hshivaraj |
General Coding Help |
6 |
3,122 |
Oct-04-2020, 12:33 PM |
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Thread: Global not working why?
Post: RE: Global not working why?
| Firstly I find your code hard to read and there is no clear flow to it. Its interesting that you have acknowledged that global s are bad, but yet you've used extensively. And I dont buy into the argum... |
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hshivaraj |
General Coding Help |
13 |
4,445 |
Oct-04-2020, 12:30 PM |
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Thread: Whats a good design/approach?
Post: Whats a good design/approach?
| Hi all.
I have this simple code, which does pretty simple things as open a file within the class. But i cant decide what the best design. Is approach1 is better approach2? I need to understand when ... |
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hshivaraj |
General Coding Help |
1 |
1,780 |
Sep-15-2019, 10:11 PM |
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Thread: Token and auth-token
Post: Token and auth-token
| Hey all.
I have problem which i dont quite understand how to go about from here.
I use request library to sign-in to website and I believe im doing that right. I make a post request to /sign-in page ... |
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hshivaraj |
Web Scraping & Web Development |
1 |
2,878 |
Jul-24-2019, 04:30 PM |
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Thread: How do i write tests for this code?
Post: How do i write tests for this code?
| Hi all.
I wrote a sample code recently. And I want to write some tests and I cant get my head around if I got my structure right. I have a few question. I know there many of you here much experience... |
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hshivaraj |
General Coding Help |
0 |
2,024 |
Apr-27-2019, 05:28 PM |
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Thread: VM address (C pointer) of Python object
Post: RE: VM address (C pointer) of Python object
| Do you mean id() function in python? |
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hshivaraj |
General Coding Help |
1 |
2,053 |
Apr-21-2019, 10:57 PM |
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Thread: Dictionary Results Error
Post: RE: Dictionary Results Error
| Dont provide the reference. Instead just the value should suffic. Remove the *.
Read about how to use * in python
print('| {:14} | {:11} | {:16} | {:15} |'.format(key, *value)) |
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hshivaraj |
General Coding Help |
2 |
2,270 |
Apr-21-2019, 10:53 PM |
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Thread: swap elements in list
Post: swap elements in list
| Hi all
So the only way i can think of to swap two elements in list with the following
def swap(arr, pos1, pos2):I wonder if there is away where I dont have to send the position of elements to be swa... |
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hshivaraj |
General Coding Help |
3 |
12,545 |
Apr-21-2019, 10:50 PM |
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Thread: Why is this pointing to the objects
Post: RE: Why is this pointing to the objects
| That's brilliant. I feeling very stupid to have not tried that before. And thinking of performance first.
But many thanks :) |
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hshivaraj |
General Coding Help |
6 |
2,848 |
Apr-09-2019, 10:55 PM |
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Thread: Cant get my head round the algorithm
Post: Cant get my head round the algorithm
| Hi all.
Wonder anyone here can help to get the algorithm right. I have sorted list of numbers and I need to pair of numbers which add to target or close to target. For instance
List 500 700 1000 14... |
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hshivaraj |
General Coding Help |
1 |
2,326 |
Apr-09-2019, 10:29 PM |
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Thread: Why is this pointing to the objects
Post: RE: Why is this pointing to the objects
| This really is interesting. My illusion was that anything within the class block would be instance variable. It appears from what your demonstrating is that unless you but anything within the construc... |
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hshivaraj |
General Coding Help |
6 |
2,848 |
Apr-09-2019, 08:10 PM |
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Thread: Why is this pointing to the objects
Post: RE: Why is this pointing to the objects
| (Apr-09-2019, 07:44 PM)Gribouillis Wrote: There is really nothing to understand here: variables stored in the class object A, such as A.l are shared by all the instances of that class.
Sure - that e... |
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hshivaraj |
General Coding Help |
6 |
2,848 |
Apr-09-2019, 07:47 PM |
