When we crawl a web page, we send a http request header then will get a http response header. If we crawl successfully, we will get the content of this web page. In this tutorial, we will introduce how to get the string content of web page.
To crawl a web page, we should add some http request headers to our crawler to simulate browser. We can use urllib.request.Request() to build a request object to add some headers to do it. Meanwhile, we also can use urllib.request.build_opener() to create an OpenDirector object to crawl a web page. In this tutorial, we will add some request headers to OpenDirector object to simulate browser.
To make browser show pdf file, we can use html embed or open a pdf url by browser. However, these two methods of displaying pdf file is hard to make some control, for example, if we only want to valid user to read pdf, how to control? To do this, we need output pdf file by php script. In this tutorial, we will show you how to do.
When we open a url by our browser, the browser will use http get method to send a request. However, if you only want to allow http post method, how to do? In this tutorial, we will introduce you how to set a php page only receive http post method request.
To get file size in python, we can use os.path.getsize() function, however, this function returns bytes of a file. In this tutorial, we will introduce you how to get a friendly file size.
Copying and moving file are common operations in python, in this tutorial, we will introduce you an easy way to copy and move file with shutil library. shutil allow you copy and move files directly, you do not need open and close file before copying or moving.
In this tutorial, we will introduce some useful operations on mysql, apache on ubuntu vps, you can follow our steps to save your some time to manage your vps.
PyMuPDF RuntimeError: cycle in page tree will occur when you are iterating pdf page by page. In this tutorial, we will show you how to fix this problem.
To extract text (plain text or html text) from a pdf file is simple in python, we can use PyMuPDF library, which contains many basic pdf operations. In this tutorial, we will introduce you how to extract text from pdf files with it.
Python TypeError: ‘str’ object is not callable, which means we can not use a string to be a function. In this tutorial, we will write an example to show you how to fix this type error.