regd | Decorators trace meta-info for Python
kandi X-RAY | regd Summary
kandi X-RAY | regd Summary
RegD is a small library for Python which adds ability to trace decorators and decorated functions in Python with meta-information. It work well with both - Python 2.x and Python 3.x. Nevertheless it was designed under Python 3, so it uses __annotations__ functions attribute specially introduced to store function meta. It allows to trace your own and third-party decorators as well. All is required is just to register any existing decorator with DecoratorRegistry, like.
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Top functions reviewed by kandi - BETA
- Decorator to convert a function into a decorator
- Get the native function for fn
- Makes a callable
- Convert fn to portable
- Set a decorator
- Set the native function
- Appends a decorator to fn
- Find all packages in a directory
- Check if given path is a package
- Generator that yields all functions decorated with a given decorator
- Generator that yields all decorated functions
- Iterate over decorated methods
- Get decorators
- Decorator for a decorator
- Returns True if fn is decorated with the given decorator
- Get the decorator for the given function
- Get a real function
regd Key Features
regd Examples and Code Snippets
Lines of Code : 16License : Permissive (MIT)
Copyfrom regd import DecoratorRegistry
# create simple decorator which does nothing
def mydecorator( fn) :
# do your decorator stuff here...
def wrapper( *args, **kwargs)
# ... and here ... all you need
return fn( *args, **kwargs > pip install regd
> easy_install regd
> git clone git://github.com/Mikhus/regd.git
> cd regd
> python setup.py install
Community Discussions
Trending Discussions on regd
QUESTION
Regd below statement can anyone clarify below questions ?
Satement: When a DataNode is down, it does not affect the availability of data or the cluster. NameNode will arrange for replication for the blocks managed by the DataNode that is not available
Questions:
- When datanode(d1) is down will namenode blindly start replicating blocks(B1,B2..Bn) on other nodes(d2)?
- But when datanode(d1) is up , what happens to the same existing blocks(B1,B2...Bn) on datanode(d1)?
Explanation:
Lets say datanode d1 has blocks b1 ,b2..Bn Since it is down namenode will start replicating them on to datanode d2 or other. But when d1 is up what happens to the d1 blocks ?
...ANSWER
Answered 2021-Jun-04 at 18:17DataNodes notice NameNode about receiving or deletion of blocks or they send over list of their replicas periodically. Moreover, NameNode has one stillrunning thread namely ReplicationMonitor to get underreplication and overreplication under its radar and plans for deletion/replication accordingly
QUESTION
I have a DB which has 8 columns, all are integers range 1~99:
...ANSWER
Answered 2021-May-02 at 11:11Fix your data model! You should not be storing values in columns. You should be storing them in rows.
That is, SQL doesn't "sort columns". It deals with data in rows!
You can do what you want by unpivoting the data into rows, calculating the new order, and then reaggregating:
QUESTION
I have a DB contain 5 columns, all are integers range from 1~5 e.g. 1,1,2,3,1 5,1,2,3,4 4,2,3,2,1 .... is there a way to count number of occurrence of, say 1 in first row by just SQL ? (in this case, 3 should be return). select count() just deal with number of records return in column manner. Thanks.
Regds LAM Chi-fung
...ANSWER
Answered 2021-May-01 at 12:48You can use:
QUESTION
I am trying to read a pdf file which is sample invoice and I am trying to fetch some sample details from the pdf like Company Name, Invoice no, GST no, Quantity of Materials etc. For this, first of all I am using PyPDF2 to get the data in the text format and then I have used NLTK toolkit to tokenize the text and remove special characters. The problem is I am not able to print 'Invoice No' and its next string containing the Invoice num. Here is the code below. Any help would be highly appreciated.
...ANSWER
Answered 2020-Mar-02 at 12:24I propose the following solution starting from the string you got after extracting text from the PDF:
QUESTION
I can understand the provisioned DB cost but there are few questions regd on-demand nodes.
does OnDemand pricing only considers the sum of WRU used by each partition or the overall WRU for the table based on the usage pattern which will be shared by each partition.
when there is a hot partition, does OnDemand increase WRU only for that partition or increases the overall WRU of the table.
does adaptive capacity work with OnDemand DB
ex: OnDemand DB with 10 partitions and current peak at 1000WRU. if 2 hot partitions require more than 300WRU will it use from adaptive capacity or increase the overall WRU to 3000WRU resulting in high cost?
...ANSWER
Answered 2020-Feb-20 at 08:16I'm not a DynamoDB insider, so I can only answer from what I understand from their documentation.
In on-demand pricing (see https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.ReadWriteCapacityMode.html#HowItWorks.OnDemand) you pay exactly by the number and size of your requests. If you make one million requests, you will pay the same whether these requests were to a million different partitions, or they all went to the same partition.
You might wonder, then, why there was such an issue of load imbalance pricing in provisioned-capacity pricing - or at least why is the Web full of stories of such an issue. There should never have been such an issue, but in the past there was. But since recently, this isn't an issue any more. Here is the story:
In the provisioned pricing page, Amazon claims that if you reserve 1000 WCU, you should be able to use this number of write units that you paid for, per second, and if you try to use more, you'll be throttled. There is no mention or warning of imbalanced loads or hot partitions... But people discovered that this wasn't quite true - Amazon had a bug in their throttling code: The usage counting wasn't done across the entire cluster. Instead, if your data was spread over 10 nodes, your reservation of 1000 was evenly split among them, so each of the 10 nodes would start to throttle you after 100 (1000/10) requests per second. This split worked well for well-balanced loads, but with hot partitions, it didn't work well. People were paying for a reservation of 1000 but when they measured how much they were getting, they saw throttling after just 800 (for example) requests per second. Amazon acknowledge this was a bug, and fixed it with their "adaptive capacity" technique where each of the nodes picks a different throttling limit, modified until the user's total usage approaches what he had paid for. This technique is explained in this excellent official talk
https://www.youtube.com/watch?v=yvBR71D0nAQ - see time 19:38. Until very recently this "adaptive capacity" was a very blunt instrument, which only worked well if your workload doesn't change quickly, but since then, this issue was fixed too - as described in
https://aws.amazon.com/blogs/database/how-amazon-dynamodb-adaptive-capacity-accommodates-uneven-data-access-patterns-or-why-what-you-know-about-dynamodb-might-be-outdated/
QUESTION
i want to Extract firm name(Samsung India Electronics Pvt. Ltd.) from my text file that are present in next line after Firm name. i have extract some data by my code but i am not able to extact firm name because i am new in python or python regex
...ANSWER
Answered 2020-Feb-06 at 10:32Use regex:
QUESTION
I'm trying to update Vuetify in a vue application created using Vue Cli 2. The current version is 0.17. This is very old version and causing a lot of problems. I need to upgrade this to latest version 1.1.8.
What I've tried:
- remove existing vuetify plugin, updated
package.jsonto the current version and runnpm i -S vuetify. - run
vue add vuetify - The documentation regd this shows invalid link. which has been notified to vuetify team
Problem
All these methods works but the out put is not as desired. The browser reloads endlessly when I run npm run dev. I'm not able to debug or even check the screen changes.
ANSWER
Answered 2019-Oct-09 at 06:28To update vuetify you've to remove and install new version of the vuetify using the following commands.
npm remove --save vuetify
npm install --save vuetify@latest
Cause of the relaoding problem when updating vuetify
Vuetify select is emitting on-change event during page load, if data is being fetched in the select. Prior to 1.0.0 it was not like that.
If someone faces the same issue make sure all the codes in the on-change event run after the page/component is mounted.
QUESTION
int b = 1;
//Here is my print document event
private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
try
{
if (b <= 1)
{
//Here im using string connection and fetching data through loop
conn = new SqlConnection(Db_Path.path);
conn.Open();
query = "select StudentsRecord.Student_Id,StudentsRecord.GR_No,StudentsRecord.Section,StudentsRecord.Name,StudentsRecord.Father_Name,Classes.Monthly_Fee,StudentsRecord.Tuition_Fee_Discount from StudentsRecord inner join Classes on StudentsRecord.Admission_Class_Id=Classes.Class_Id where Classes.Class_Name='" + cbclass.SelectedItem + "'";
cmd = new SqlCommand(query, conn);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
int a = Convert.ToInt32(dr[5].ToString()) - Convert.ToInt32(dr[6].ToString());
int c = a + Convert.ToInt32(txtlatefee.Text);
e.Graphics.DrawString("BABA FOUNDATION PUBLIC", new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(20, 10));
e.Graphics.DrawString("HIGH SCHOOL (REGD)", new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(50, 35));
e.Graphics.DrawString("Domonwah Road Hyderabad.", new Font("Arial", 8, FontStyle.Bold), Brushes.Black, new Point(80, 60));
e.Graphics.DrawString("School's Copy", new Font("Arial", 15, FontStyle.Regular), Brushes.Black, new Point(20, 90));
e.Graphics.DrawString("Issue Date", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(40, 140));
e.Graphics.DrawString("" + txtissuedate.Text, new Font("Arial", 10, FontStyle.Regular), Brushes.Black, new Point(120, 140));
e.Graphics.DrawString("Due Date", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(40, 155));
e.Graphics.DrawString("" + txtduedate.Text, new Font("Arial", 10, FontStyle.Regular), Brushes.Black, new Point(120, 155));
e.Graphics.DrawString("V. No.", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 205));
e.Graphics.DrawString("SID.", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(215, 205));
e.Graphics.DrawString("" + dr[0].ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(245, 205));
e.Graphics.DrawString("Fee for the month of:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 225));
e.Graphics.DrawString("" + txtfeemonth.Text, new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(170, 225));
e.Graphics.DrawString("Roll No:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 245));
e.Graphics.DrawString("GR#:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(180, 245));
e.Graphics.DrawString("" + dr[1].ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(220, 245));
e.Graphics.DrawString("Class:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 265));
e.Graphics.DrawString("" + cbclass.SelectedItem, new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(100, 265));
e.Graphics.DrawString("Sec:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(180, 265));
e.Graphics.DrawString("" + dr[2].ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(220, 265));
e.Graphics.DrawString("Name:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 285));
e.Graphics.DrawString("" + dr[3].ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(70, 285));
e.Graphics.DrawString("F/Name:", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(20, 305));
e.Graphics.DrawString("" + dr[4].ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(80, 305));
e.Graphics.DrawRectangle(new Pen(Color.Black), 20, 340, 300, 350);
e.Graphics.DrawString("Particulars", new Font("Arial", 15, FontStyle.Bold), Brushes.Black, new Point(65, 345));
e.Graphics.DrawString("Amount", new Font("Arial", 13, FontStyle.Bold), Brushes.Black, new Point(235, 345));
e.Graphics.DrawLine(new Pen(Color.Black), 230, 340, 230, 688);
e.Graphics.DrawString("Admission Fee", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 388));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 388));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 380, 320, 380);
e.Graphics.DrawString("Monthly Tuition Fee", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 418));
e.Graphics.DrawString("" + a.ToString(), new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 418));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 410, 320, 410);
e.Graphics.DrawString("Other Fee", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 443));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 443));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 440, 320, 440);
e.Graphics.DrawString("Exam Fee", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 470));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 470));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 465, 320, 465);
e.Graphics.DrawString("Stationary Charges", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 494));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 494));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 490, 320, 490);
e.Graphics.DrawString("Annual Charges", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 518));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 518));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 515, 320, 515);
e.Graphics.DrawString("Course Payment", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 545));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 545));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 540, 320, 540);
e.Graphics.DrawString("Library Fee", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 570));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 570));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 565, 320, 565);
e.Graphics.DrawString("Others", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 596));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 596));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 590, 320, 590);
e.Graphics.DrawString("Arrears", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(30, 621));
e.Graphics.DrawString("0.00", new Font("Arial", 10, FontStyle.Bold), Brushes.Black, new Point(235, 621));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 615, 320, 615);
e.Graphics.DrawString("Payable within due date", new Font("Arial", 11, FontStyle.Bold), Brushes.Black, new Point(30, 643));
e.Graphics.DrawString("" + a.ToString(), new Font("Arial", 11, FontStyle.Bold), Brushes.Black, new Point(235, 646));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 640, 320, 640);
e.Graphics.DrawString("Payable after due date", new Font("Arial", 11, FontStyle.Bold), Brushes.Black, new Point(30, 667));
e.Graphics.DrawString("" + c.ToString(), new Font("Arial", 11, FontStyle.Bold), Brushes.Black, new Point(235, 670));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 665, 320, 665);
e.Graphics.DrawString("Rupees (In Words):", new Font("Arial", 13, FontStyle.Bold), Brushes.Black, new Point(20, 705));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 785, 320, 785);
e.Graphics.DrawString("Note:", new Font("Arial", 13, FontStyle.Bold), Brushes.Black, new Point(20, 795));
e.Graphics.DrawLine(new Pen(Color.Black), 20, 820, 70, 820);
var r = new Rectangle(20, 825, 300, 100);
e.Graphics.DrawString(txtnote.Text, new Font("Arial", 10, FontStyle.Bold), Brushes.Black, r);
if (dr[0].ToString() != null)
{
MessageBox.Show(dr[0].ToString());
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
}
}
b++;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
ANSWER
Answered 2019-Jul-31 at 08:38You need to change the logic of your reads.
Place the reader outside of the PrintPage event and in it read and DrawString etc until the page is full or reader is empty. Then return from the event. It will be called again automatically if HasMorePages is true..
Here is an example of a print logic structure:
QUESTION
I need to read in many big CSV file to process in C++ (range from few MB to hundreds MB) At first, I open with fstream, use getline to read each line and use the following function to split each row"
...ANSWER
Answered 2018-Apr-24 at 15:32Mainly you want to avoid copying.
If you can afford the memory to load the whole file into an array, then use that array directly, don't convert it back to a stringstream, as that makes another copy, just process the big buffer!
On the other hand that requires your machine to free up adequate RAM for your allocation, and possibly page some RAM to disk, which will be slow to process. The alternative is to load your file in large chunks, identify the lines in that chunk and only copy down the part-line at the end of the chunk before loading the next portion of file to concatenate to that part-line (a wrap and read).
Another option is that most operating systems provide a memory-mapped file view which means the OS does the file copying for you. These are more constrained (you have to use fixed block sizes and offsets) but will be faster.
You can use methods like strtok_r to split your file into lines, and lines into fields, though you need to deal with escaped field markers - you need to do that anyway. It is possible to write a tokeniser that works like strtok but returns string_view-like ranges instead of actually inserting null bytes.
Finally you may need to convert some of the field strings to numeric forms or otherwise interpret them. Ideally don't use istringstream, as that makes another copy of the string. If you must, perhaps craft your own streambuf that uses the string_view directly, and attach it to an istream?
So this should significantly reduce the amount of data copying going on, and should see a speed-up.
Be aware that you can only directly access the fields and lines that you have in your file read window. When you wrap and read any references you have into that data are useless rubbish.
QUESTION
I have 2 tables with multiple columns in each of them. As can be seen below the column headers are not the same name. I would like to do a GROUP BY on the first and second column of EACH table and then in the output, the results should be appended and not have any duplicates. Also the results only needs the first two columns as the output.
Tablename = STAT
...ANSWER
Answered 2019-Jan-31 at 14:02I would use UNION ALL to combine both tables in 1 unique. Then, wrap a SELECT * around that query and apply a GROUP BY
Or, instead of using a GROUP BY I would do the same as above, but using a SELECT DISTINCT *
Or, as stated @Usagi Miyamoto in comments, using simple a UNION (without ALL)
Schema (MySQL v5.7)
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