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Thread: Help with itertools
Post: Help with itertools
| Been a while since I did this.
Can't remember how to get from:
[[0], [4, 3, 14], [4, 3, 21], [4, 10, 16]]to:
[0, 4, 4, 4]
[0, 4, 4, 10]
[0, 4, 4, 16]
[0, 4, 3, 4]
[0, 4, 3, 10]
ETC ETC.
I figure it'... |
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jarrod0987 |
General Coding Help |
1 |
1,830 |
Jun-09-2019, 02:15 PM |
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Thread: How to convert rows to columns.
Post: How to convert rows to columns.
| I'm playing around with incomplete columnar ciphers. What is the fastest was to convert rows to columns when the columns may not all be the same length?
Example:
rows = [
'SOME',
'TEXT',
'OFSO',
'ME... |
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jarrod0987 |
General Coding Help |
1 |
3,494 |
May-14-2019, 04:37 PM |
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Thread: Product expression.
Post: Product expression.
| What I want to do it to use Product from itertools.
I want the length of the product to be variable.
so for example...
var = 'AB'
If I had product(var, var)
I would get
AA
AB
BA
BB
If product(var,... |
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jarrod0987 |
General Coding Help |
1 |
2,380 |
Dec-13-2018, 11:05 AM |
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Thread: File IO Help
Post: File IO Help
| I have found that running a program in IDLE is slower then running it by right clicking and openwith Python. Also, that second way let's me run multiple instances. The following code works fine in IDL... |
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jarrod0987 |
General Coding Help |
5 |
2,937 |
Dec-13-2018, 09:14 AM |
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Thread: Help with building Cython modules.
Post: Help with building Cython modules.
| After a week of pure hell and lot's of help I seem to have Cython and a compiler installed and working in Win 10.
I seem to have pyximport working now.
Setup.py does generate a .c file when I run it i... |
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jarrod0987 |
General Coding Help |
2 |
3,363 |
Oct-10-2018, 03:33 PM |
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Thread: Help with Cython in Win 10
Post: Help with Cython in Win 10
| Trying to get it up and running so I can learn it.
I am pretty sure Cython and miniGW are installed. They seemed to match the demo video's process.
I also have the shortcut for msys which can bring up... |
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jarrod0987 |
General Coding Help |
0 |
3,033 |
Oct-06-2018, 12:16 PM |
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Thread: Dictionary or Numpy Array?
Post: RE: Dictionary or Numpy Array?
| Seems to be what I wanted. Thanks |
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jarrod0987 |
Data Science |
2 |
7,178 |
Oct-05-2018, 06:48 PM |
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Thread: Dictionary or Numpy Array?
Post: Dictionary or Numpy Array?
| First, can someone please show the proper code for creating a 5 row 2 column numpy array with type python object?
I see a lot of info online but none of it seems to quite show how to do that in one ex... |
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jarrod0987 |
Data Science |
2 |
7,178 |
Oct-05-2018, 06:18 PM |
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Thread: Help getting PIP working
Post: Help getting PIP working
| DELETED BY OP
How do I make PIP install NUMPY please? |
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jarrod0987 |
Data Science |
1 |
1,896 |
Oct-05-2018, 04:35 PM |
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Thread: Help with learning threading please.
Post: Help with learning threading please.
| I wrote a short test program to learn how to make threads. Right now there is only 1 thread. Going to increase that once I get it working.
It is throwing and error and I am not sure what I am doing wr... |
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jarrod0987 |
General Coding Help |
3 |
14,456 |
Sep-23-2018, 06:41 AM |
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Thread: itertools
Post: itertools
| I know how to use itertools for permutations in the normal way.
permutations = (['a', 'b', 'c'], 2)would give
[a, b]
[a, c]
[b, a] etc...
What if I want each element in the permutation to have a sepa... |
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jarrod0987 |
General Coding Help |
1 |
2,507 |
Jul-27-2018, 05:51 AM |
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Thread: Branch and Bound
Post: RE: Branch and Bound
| I have been playing with your code example and figuring out what it does.I think I will be able to do that on my own. How do you add rules about disallowing certain perms? I can't write it because I h... |
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jarrod0987 |
General Coding Help |
7 |
5,205 |
Jul-26-2018, 06:38 PM |
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Thread: Branch and Bound
Post: RE: Branch and Bound
| (Jul-26-2018, 05:18 PM)ichabod801 Wrote: Permutations can be done with recursion:
def permutations(sequence, start = []):
if not sequence:
return [start]
else:
perms = []
... |
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jarrod0987 |
General Coding Help |
7 |
5,205 |
Jul-26-2018, 05:38 PM |
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Thread: Branch and Bound
Post: RE: Branch and Bound
| (Jul-26-2018, 04:43 PM)ichabod801 Wrote: This isn't really a branch and bound problem. Branch and bound is looking at optimizing combinations with respect to some evaluation function. It's meant to ... |
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jarrod0987 |
General Coding Help |
7 |
5,205 |
Jul-26-2018, 04:57 PM |
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Thread: Branch and Bound
Post: Branch and Bound
| I am trying to learn about branch and bound. I understand the concept but have not had any luck tracking down an example of the code that works for what I want to do.
Say I have some letters ABCDEFG ... |
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jarrod0987 |
General Coding Help |
7 |
5,205 |
Jul-26-2018, 03:15 PM |
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Thread: Permutation help.
Post: Permutation help.
| What I have is a list of lists. Something like this:
[[1][4][2][3, 6][4][1]]what I want back is something like:
[1][4][2][3][4][1], [1][4][2][6][4][1]or even:
['142341', '142641']How can I accomplish ... |
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jarrod0987 |
General Coding Help |
1 |
2,204 |
Jun-28-2018, 04:35 PM |
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Thread: How to get python to select a dictionary.
Post: How to get python to select a dictionary.
| I'm not even sure how to word my question. I know exactly what I want to do but I don't know how to ask it so I will try an example.
Suppose I have multiple dictionaries with the same keys but differ... |
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jarrod0987 |
General Coding Help |
1 |
2,772 |
May-31-2018, 10:51 PM |
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Thread: Faster way?
Post: RE: Faster way?
| Turns out it was a bug causing the problem. Thanks for your help though. I think it is interesting. |
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jarrod0987 |
General Coding Help |
2 |
2,655 |
May-02-2018, 08:29 AM |
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Thread: Faster way?
Post: Faster way?
| I am playing with breaking ancient ciphers.
In this particular puzzle, it is not allowed for a letter to encrypt to itself.
I am using word patterns to get a list of candidates for each cipher word.
I... |
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jarrod0987 |
General Coding Help |
2 |
2,655 |
May-02-2018, 04:38 AM |
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Thread: Square and Cube roots.
Post: Square and Cube roots.
| What is an easy way to get the square or cube root of a number and not get the part after the decimal? I just want the whole number or maybe the whole number and a remainder. No decimals. Is that poss... |
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jarrod0987 |
General Coding Help |
2 |
5,484 |
Apr-13-2018, 01:19 PM |
