tarantula | 分布式爬虫 | Crawler library
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QUESTION
I'm making a calculator for a game I play and whenever I run it, it just returns "NaN" for two values, only one of the values actually returns as it should. The two values that return NaN are the ones that run through switch statements and I found that the values you get from the switch statements are undefined so I think that's where it goes wrong. I tried looking for other questions like this on StackOverflow and I found some but their answers didn't work for me.
...ANSWER
Answered 2021-May-08 at 14:49The main problem is to use strings from input. The further effect is to get no values from the switch
statements, because the value is a string and in all cases, you have numbers. The comparison is here strict, like ===
.
For unknown values, you could return the function and omit calculation with not given values.
QUESTION
Using javascript and "document.querySelector" to successfully identify and extract text from the last message on a Discord channel is proving difficult. I've done this successfully on other websites by using :last-child, as such:
...ANSWER
Answered 2021-Mar-03 at 03:36Since it looks like the last element is followed by
QUESTION
I'm working on an iOS app using SwiftUI and CoreData and am running into a problem that I cannot seem to figure out.
To provide a little bit of information of what I am trying to do:
I have two CoreData entities that have a One-To-Many relationship:
- Tarantula - A tarantula may molt many times (To Many) and when deleted, all of the molts shold also be removed (Cascade)
- Molt - A molt belongs to a single Tarantula (To One) and when deleted, should have the reference removed from the Tarantula (Nullify)
I then have a view that lists all of the molts for a given Tarantula that allows adding and deleting molts. It looks like this:
...ANSWER
Answered 2020-Dec-02 at 23:41This issue has been confirmed to be due to a system bug.
The workaround is to wrap the delete logic in NSManagedObjectContext.perform
. For example:
QUESTION
I'm wondering if it would be possible to create dense vector representations for an image, similar to how you might create a word embedding with an algorithm like Word2Vec?
I understand that there are some big differences between text and image data – specifically the fact that word2vec uses the word's context to train – but I'm hoping to find a similar counterpart for images.
If a simplistic example of w2v (from Allison Parrish's GitHub Gist) is:
...ANSWER
Answered 2019-Oct-15 at 20:56Absolutely! But...
Such models tend to need significantly larger and deeper neural-networks to learn the representations.
Word2vec uses a very-shallow network, and performs a simple prediction of neighboring-words, often from a tightly limited vocabulary, as the training-goal which (as a beneficial side-effect) throws off compact vectors for each word.
Image-centric algorithms instead try to solve labeling/classification tasks, or regenerate original images under compressed-representation (or adversarial-classifier) constraints. They use 'convolutions' or other multi-layer constructs to intepret the much-larger space of possible pixel values, and some of the interim neural-network layers can be interpretable as compact vectors for the input images.
Note that even in textual word2vec, the individual "dense embedding" dimensions, learned in an unsupervised fashion, don't have neat human-interpretability (like "bigness", "cuteness", etc.). Often, certain directions/neighborhood of the high-dimensional space are vaguely-interpretable, but they're not precise nor aligned exactly with major dimension axes.
Similarly, any compact representations from deep-neural-network image-modeling won't inherently have individual dimensions with clear meanings (unless specific extra constraints with those goals were designed-in) – but again, certain directions/neighborhoods of the high-dimensional space tend to be meaningful ("crowds", "a car", "smiles", etc).
A nice overview of some key papers in deep-learning based image-analysis – the kinds of algorithms which throw off compact & meaningful vector summaries of images – that I just found is at:
https://adeshpande3.github.io/The-9-Deep-Learning-Papers-You-Need-To-Know-About.html
QUESTION
I'm trying to make application that adds tarantula species to my excel document. I'm doing it with openpyxl and when i'm adding the second name to B column it adds that name 2 times instead of 1. Here is the code
...ANSWER
Answered 2019-Aug-03 at 15:55I rewrote your code a bit to one function and used max_row+2 to cover the base case with the empty cell as well. Hope that this help.
QUESTION
For practice, I am creating a personal log page for my tarantula's habits. I am trying to code the 'create' button. When I run this code, fill the form out and hit the button, nothing happens, and I mean nothing. No sqli error or any of my echos. Can someone please help?
I tried taking the table names out, making various variables global, un-concatenated it and changing apostrophes to double-quote marks.
queries.php:
...ANSWER
Answered 2019-Jul-11 at 13:15Your tags are wrong in the html, first you are opening a
and then you are closing that div
But the main reason why you could be not getting a thing, is because you have your buttons ouside the
input
and submit
info that it has INSIDE its tags, right now you have a form with no sending and two buttons bound to nothing, so, go like this
QUESTION
How can I add the points together for one team?
This is what I have tried:
...ANSWER
Answered 2019-Apr-23 at 11:08Use itertools.groupby
with sorted
:
QUESTION
I want to extract the string from my list. This is my list.
...ANSWER
Answered 2019-Apr-18 at 14:54This is what you can try.
QUESTION
I have a method that sorts team values in an index starting from 1 and incrementing. It looks like this:
...ANSWER
Answered 2018-Sep-06 at 16:09Use itertools.groupby
to collect together teams with the same score, then iterate through each group:
QUESTION
The script needs to read input from a text/csv file but as soon as I try and implement the functionality, everything breaks.
Here is my code:
...ANSWER
Answered 2018-Sep-03 at 11:24have you tried the CSV python lib? Extracted from the doc (https://docs.python.org/3/library/csv.html):
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