Server Side Programming Articles - Page 2266 of 2650

BeautifulSoup is a class in the bs4 module of python. Basic purpose of building beautifulsoup is to parse HTML or XML documents.Installing bs4 (in-short beautifulsoup)It is easy to install beautifulsoup on using pip module. Just run the below command on your command shell.pip install bs4Running above command on your terminal, will see your screen something like -C:\Users\rajesh>pip install bs4 Collecting bs4 Downloading https://files.pythonhosted.org/packages/10/ed/7e8b97591f6f456174139ec089c769f89a94a1a4025fe967691de971f314/bs4-0.0.1.tar.gz Requirement already satisfied: beautifulsoup4 in c:\python\python361\lib\site-packages (from bs4) (4.6.0) Building wheels for collected packages: bs4 Building wheel for bs4 (setup.py) ... done Stored in directory: C:\Users\rajesh\AppData\Local\pip\Cache\wheels\a0\b0\b2\4f80b9456b87abedbc0bf2d52235414c3467d8889be38dd472 Successfully built bs4 Installing collected packages: bs4 Successfully installed bs4-0.0.1To verify, ... Read More

The wcstoll() function is used to convert the wide character string to long long integers. It sets the pointer to point to the first character after the last one. The syntax is like below.long long wcstoll(const wchar_t* str, wchar_t** str_end, int base)This function takes three arguments. These arguments are like below −str: This is the starting of a wide string.str_end: The str_end is set by the function to the next character, after the last valid character, if there is any character, otherwise null.base: This specifies the base. The base values can be of (0, 2, 3, …, 35, 36)This function ... Read More

The strol() function is used to convert the string to long integers. It sets the pointer to point to the first character after the last one. The syntax is like below. This function is present into the cstdlib library.long int strtol(const char* str, char ** end, int base)This function takes three arguments. These arguments are like below −str: This is the starting of a string.str_end: The str_end is set by the function to the next character, after the last valid character, if there is any character, otherwise null.base: This specifies the base. The base values can be of (0, 2, ... Read More

Here we will see what is the use of ldexp() method in C or C++. This function returns any variable x raise to the power of exp value. This takes two arguments x and exp.The syntax is like below.float ldexp (float x, int exp) double ldexp (double x, int exp) long double ldexp (long double x, int exp) double ldexp (T x, int exp)Now let us see one example to get a better idea.Example#include #include using namespace std; int main() {    double a = 10, res;    int exp = 2;    res = ldexp(a, exp); // Finds a*(2^exp)    cout

In this section we are going to create a Whatsapp chatbots, but unlike few other chatbots for twitter or facebook, whatsapp chatbots don’t run on the platform directly because of whatsapp’s policies.But there is a way to get is done, using selenium, a very smart package in python with which developer’s can automate the browser’s activity. With this we can make use of whatsapp-web through the browser.RequirementsWe need three basic things to get things done: Selenium.We can install selenium very easily using pip, just run below command on your terminal −$pip install seleniumChrome/firefox or any other webdriver.As I using chrome ... Read More

Python provides different modules like urllib, requests etc to download files from the web. I am going to use the request library of python to efficiently download files from the URLs.Let’s start a look at step by step procedure to download files using URLs using request library−1. Import moduleimport requests2. Get the link or urlurl = 'https://www.facebook.com/favicon.ico' r = requests.get(url, allow_redirects=True)3. Save the content with name.open('facebook.ico', 'wb').write(r.content)save the file as facebook.ico.Exampleimport requests url = 'https://www.facebook.com/favicon.ico' r = requests.get(url, allow_redirects=True) open('facebook.ico', 'wb').write(r.content)ResultWe can see the file is downloaded(icon) in our current working directory.But we may need to download ... Read More

Everybody loves to write reusable code, right? Then partial function is a cool thing to learn. Partial functions allows us to derive a function with x parameters to a function with fewer parameters and constant values set for the more limited function.We can write partial functional application in python through functools library. Below is a simple example of partial function from the functools library with the add function from the operator library.>>> from functools import * >>> from operator import * >>> add(1, 2) 3 >>> add1 = partial(add, 4) >>> add1(6) 10 >>> add1(10) 14Partial is a higher order ... Read More

Python object oriented programming allows variables to be used at the class level or the instance level where variables are simply the symbols denoting value you’re using in the program. At the class level, variables are referred to as class variables whereas variables at the instance level are referred to as instance variables. Let’s understand the class variable and instance variable through a simple example −# Class Shark class Shark: animal_type= 'fish' # Class Variable def __init__(self, name, age): self.name = name self.age = age # Creating objects of Shark class obj1 = Shark("Jeeva", 54) obj2 = Shark("Roli", 45) ... Read More

In this example, we will count Negative Numbers in a Column-Wise and Row-Wise Sorted Matrix. At first, we will create a matrix − mat = [ [-1, 3, 5, 7], [-6, -3, 1, 4], [-5, -1, -10, 12] ] Pass the matrix to a custom function and use nested for loop − def negativeFunc(mat, r, c): count = 0 for i in range(r): for j in range(c): if mat[i][j]

In this article, we are going to learn about the logical operators on strings in Python. The logical operators such as and, or, and not are used to combine the conditional statements and control the flow of logic. While they are commonly used with the Boolean values, they can also be used with strings and other non-Boolean types.Logical Operators on String in Python? In Python the non-empty strings are considered as true, and the Empty strings ("") are considered as false. When the logical operators are applied to the strings, they do not return Boolean values directly; instead, they return one ... Read More