I performed a GMM (Generalized Methods of Moments) analysis in R using the pgmm package. I included additional external variables in my model. However, since the model also uses internal instruments (lagged dependent variables), I am not sure how many instruments there are in total. Is there any way how I can calculate them or … Read more
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I tried using openpyxl and SheetImageLoader Here’s the best I could do, the script copies the images but works only if there’s one sheet in the file and doesn’t retain image size import openpyxl from openpyxl_image_loader import SheetImageLoader from io import BytesIO # Load source workbook src_wb = openpyxl.load_workbook(‘C:\\miso\\testy\\new_excel_file3.xlsx’) src_sheet = src_wb.active # Create destination … Read more
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I uses scrapy to scrap products from amazon but It only returns first product for each page and go to next page what wrong with my code import scrapy from ..items import AmazonItem class AmazonSpSpider(scrapy.Spider): name = “amazon_sp” allowed_domains = [“www.amazon.com”] start_urls = [“https://www.amazon.com/s?k=laptop”] page_number = 1 def parse(self, response): items = response.css(‘h2 a.a-text-normal::attr(href)’).getall() print(items) … Read more
I’m passing a value (line_id) from an edit button in my HTML page as a bind variable to Snowflake SQL query. I wrote Console.WriteLine(line_id) to check if I’m getting a null value, but I’m getting an actual value, but still it’s not entering as bind variable. Below is my script, need a help on this … Read more
I’m trying to send a shell command directly from an index.php using the exec function as follows: exec(‘shopt -s extglob && cd /opt/lampp/htdocs/testes/xml/ && rm !(*.xml)’); However xampp returns an error in the log: sh: -c: line 1: syntax error near unexpected token `(‘ sh: -c: line 1: `rm !(*.xml)’ I already gave permission for … Read more
Recently I started learning PostgreSQL. I’ve created an empty database, “mydb“. At this point I have 4 databases – 3 default ones (template0, template1, postgres) and my database “mydb“. The size of the folder pgdata is about 60 MB. After that I’ve downloaded a database for learning purposes from the internet with the size of … Read more
I am currently just playing around and getting to know python as a whole. My current “Task” is to pull pictures from an already existing folder on my HDD based on a list of picture names given in an excel list. Weirdly however the code only works with a specific excel list when it should … Read more
Why does the below read-access of an int*const& result in a segmentation fault? #include <iostream> class X{ int A[3][4] = {0}; public: int*const&p=*A; void print()const{ for(int i=0;i<3;++i){ for(int j=0;j<4;++j){ std::cout << A[i][j] << ” , “; } std::cout << “\n”; } } }; int main() { X x; x.p[2] = 3; x.print(); // until this … Read more