Namedtuple class is defined in the collections module. It returns a new tuple subclass. The new subclass is used to create tuple-like objects that have fields accessible by attribute lookup as well as being indexable and iterable. The constructor takes type name and field list as arguments. For example, a ... Read More

You can't read user input in an un-initialized pointer. Instead, have a variable of the struct data type and assign its address to pointer before accessing its inner elements by → operatorexample#include <stdio.h> struct example{    char name[20]; }; main(){    struct example *ptr;    struct example e;    puts("enter ... Read More

Using RegEx module is the fastest way.>>> import reAssuming that the string contains integer and floating point numbers as well as below −>>> s='my age is 25. I have 55.50 percent marks and 9764135408 is my number'the findall() function returns a list of numbers matching given pattern which includes digit ... Read More

Usin count() function in itertools module gives an iterator of evenly spaced values. The function takes two parameters. start is by default 0 and step is by default 1. Using defaults will generate infinite iterator. Use break to terminate loop.import itertools percentNumbers = [ ] finish = "n" num = ... Read More

Python doesn't have an equivalent of do-while loop as in C/C++ or Java. The essence of do-while loop is that the looping condition is verified at the end of looping body. This feature can be emulated by following Python code −Examplecondition=True x=0 while condition==True:      x=x+1      print ... Read More

Here is a tuple with 12 integers. In order to split it in four sub-tuple of three elements each, slice a tuple of three successive elements from it and append the segment in a lis. The result will be a list of 4 tuples each with 3 numbers.>>> tup=(7, 6, ... Read More

Python has an in-built join() function that returns a string by joining elements in a sequence object by inserting separator between elements. If we need a string without any separator, we initialize it with null string>>> lst=['h', 'e', 'l', 'l', 'o'] >>> str='' >>> str.join(lst) 'hello'Read More

The membership operator in can also be used with dictionary object>>> d1={1:'aaa', 2:'bbb', 3:"ccc", 4:'ddd', 5:'eee'} >>> 3 in d1 True >>> 9 in d1 FalseAdditionally, keys() method returns a view object of keys in dictionary. Membership operator in also tells you if key is present>>> 3 in d1.keys() TrueRead More

Vertical bar (|) stands for bitwise or operator. In case of two integer objects, it returns bitwise OR operation of two>>> a=4 >>> bin(a) '0b100' >>> b=5 >>> bin(b) '0b101' >>> a|b 5 >>> c=a|b >>> bin(c) '0b101'Read More

Python has magic methods to define overloaded behaviour of operators. The comparison operators (<, <=, >, >=, == and !=) can be overloaded by providing definition to __lt__, __le__, __gt__, __ge__, __eq__ and __ne__ magic methods.  Following program overloads < and > operators to compare objects of distance class. class distance: ... Read More