blok | A simple blockchain implementation written in Python | Blockchain library
kandi X-RAY | blok Summary
kandi X-RAY | blok Summary
A simple Blockchain implementation written in Python.
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Top functions reviewed by kandi - BETA
- Returns a list of all the nodes in the network .
- Create a new block .
- Create a new node .
- Synchronizes the chain in the current blockchain .
- Create a new transaction .
- Mine a new block .
- Return flask app .
- Parse command line arguments .
- Get the blockchain .
- Return a JSON response .
blok Key Features
blok Examples and Code Snippets
Community Discussions
Trending Discussions on blok
QUESTION
I have a play controller:
...ANSWER
Answered 2021-May-28 at 23:59What is happening is basically:
- the
Future
result ofcreateSchool(...)
is bound tocreateSchool
workedVal
is initialized tofalse
- a callback is attached to
createSchool
workedVal
is checked andfalse
Ok
with the error message is returned- The
createSchool
Future
completes - The callback is executed, possibly setting
workedVal
You'll have to make it an async Action
, which means every path has to result in a Future
So something like this should work
QUESTION
I wish to identify and then create a list in python all stocks (Capitalized Letters) mentioned here..
The problem I have a large text doc with many areas containing 2 3 or 4 Capitalised letters however i only want to get the ones that precede a paragraph ending (stocks-to-watcch are in the following paragraph):
i.e SE, SAM, PYPL, LAD, GLOB .....etc
Not sure if non capturing groups is the way to go or whether I can do look behinds.. if I do non capturing groups to I was thinking something like this would work but it doesn't... any help greatly appreciated
...ANSWER
Answered 2021-Apr-25 at 21:09Extract the substring between two strings:
QUESTION
I've got a canvas that has an array of objects, these objects are positioned and added to the canvas. Each object has a matching DOM element that triggers a tooltip. This element is placed exactly on top of the canvas object.
On desktop this works fine since the background image is always filling the screen and there is no scrollbar. But on mobile I have a horizontal scrollbar so users can scroll left and right on the image (else it will become to small).
The problem is, the DOM elements that are positioned on top of the fabric objects stay in their spot according to where the objects are without any scrolling, when I scroll horizontally, the DOM elements keep in their same spot.
I made a video on my phone that shows this: https://streamable.com/xn1t2i Dots with circle are the DOM elements outside the canvas that are placed on the canvas objects (blue dots without circles).
So I thought of the following solution: put the entire script inside a function, and call that function on an event, like: touchmove
this however is very slow and shows a lot of flickering when moving around. So I tried touchend
but this also is pretty slow and also triggers the function when clicking the tooltip.
Example video of touchmove
: https://streamable.com/708d2s As you can see the dots do get repositioned, but way too slow and if the scroll drags on a bit too long, the dots get mis-aligned again.
I've also tried scroll
but this didn't work at all.
This is my code at the moment:
javascript:
...ANSWER
Answered 2021-Mar-24 at 11:59wrap a new relative positioned div
around your .canvas-container
and your #cirkel1 ... #cirkelN
divs so that the relevant html code area is structured like this:
QUESTION
i want to create translator hook which takes language json files by selected language and return piece of this big object depend on arguments. how can i create an interface for object which i created dynamicly? i want to see keys of object after point
json file
...ANSWER
Answered 2021-Mar-15 at 23:58I am assuming that all languages have the same fields. Getting the type from one of the example files is good but you can go further with this:
QUESTION
I want to test the trained model with a single image(rgb). But I am encountering an error. I used cat and dog images while training the model.Also, while creating the model, I got the first layers from resnet50. I created the last layers myself. Before exporting the dataset to the model, I did some preliminary work and converted the classes to 0-1 values.(with encoder cat:0,dog:1) Now I want to test this model with a dog image. I expect it to return 0 or 1, but I have a problem.
my code blok:
...ANSWER
Answered 2021-Jan-22 at 06:42The error is telling you that the shape of your input (1, 750, 3) doesn't match the expected shape by your model (None, 224, 224, 3).
I recommend you resize your image to 224 x 224 first, then normalize it using the division by 255. After that expand the dimensions so it becomes (1, 224, 224, 3) and try again.
QUESTION
I have a problem about implementing recommendation system by using Euclidean Distance.
What I want to do is to list some close games with respect to search criteria by game title and genre.
Here is my project link : Link
After calling function, it throws an error shown below. How can I fix it?
Here is the error
...ANSWER
Answered 2021-Jan-03 at 16:00The issue is that you are using euclidean distance for comparing strings. Consider using Levenshtein distance, or something similar, which is designed for strings. NLTK has a function called edit distance that can do this or you can implement it on your own.
QUESTION
I want to retrieve or check whether the "ket_upload" key contains "cash" or "credit" values. Do you have any suggestions?
The data is like this :
...ANSWER
Answered 2020-Dec-31 at 02:42i think you should using function
somethings like that ;
QUESTION
I'm scraping a website that has a table of satellite values (https://planet4589.org/space/gcat/data/cat/satcat.html).
Because every entry is only separated by whitespace, I need a way to split the string of data entries into an array.
However, the .split()
function does not suit my needs, because some of the data entries have spaces (e.g. Able 3), I can't just split everything separated by whitespace.
It get's trickier, however. In some cases where no data is available, a dash ("-") is used. If two data entries are separated by only a space, and one of them is a dash, I don't want to include it as one entry.
e.g say we have the two entries "Able 3" and "-", separated only by a single space. In the file, they would appear as "Able 3 -". I want to split this string into the separate data entries, "Able 3" and "-" (as a list, this would be ["Able 3", "-"]
).
Another example would be the need to split "data1 -" into ["data1", "-"]
Pretty much, I need to take a string and split it into a list or words separated by whitespace, except when there is a single space between words, and one of them is not a dash.
Also, as you can see the table is massive. I thought about looping through every character, but that would be too slow, and I need to run this thousands of times.
Here is a sample from the beginning of the file:
...ANSWER
Answered 2020-Dec-16 at 06:57One approach is to use pandas.read_fwf()
, which reads text files in fixed-width format. The function returns Pandas DataFrames, which are useful for handling large data sets.
As a quick taste, here's what this simple bit of code does:
QUESTION
Iam using a LiveData with DataBindg. My ViewModel:
...ANSWER
Answered 2020-Nov-18 at 12:41Your viewmodel.counter
inside layout xml file is referring to ViewModel's counter variable which is of type Int.
android:text
attribute requires value of type String.
To solve it, you have to use android:text="@{String.valueOf(viewmodel.counter)}"
which actually returns a String representation of Int.
In your layout xml file just replace:
android:text="@{viewModel.counter}"
with android:text="@{String.valueOf(viewmodel.counter)}"
QUESTION
I am trying to create a grouped new variable in R that is based on the lagged value of a another variable.
My data.frame looks like this:
...ANSWER
Answered 2020-Nov-11 at 10:29Try using this :
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