The membership operator in can also be used with dictionary object , Additionally, keys() method returns a view object of keys in dictionary. Membership operator in also tells you if key is present ,

CSV (Comma Separated Values) is a most common file format that is widely supported by many platforms and applications. Use csv module from Python's standard library. Easiest way is to open a csv file in 'w' mode with the help of open() function and write  key value pair in comma separated form. , The csv module contains DictWriter method that requires name of csv file to write and a li.....

In Python 2.x <> as well as != symbols are defined as 'not equal to' operators. In Python 3, <> operator is deprecated.

Vertical bar (|) stands for bitwise or operator. In case of two integer objects, it returns bitwise OR operation of two ,

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.  , Result shows implementation of __lt__ and _gt_.....

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. , Result of above program shows overloaded use of == an.....

Following program generates 10 random, non-repetitive integers between 1 to 100. It generates a random integer in the given interval and adds it in a list if it is not previously added. ,

Loops formed with for statement in Python traverse one item at a time in a collection. Hence there is less likelihood of for loop becoming infinite. The while loop however needs to be controlled by making some provision inside the body of the loop to drive the condition mentioned in the beginning to false.This is usually done by keeping count of iterations , Loop repetition can also be cont.....

Infinite loop is the one that doesn't stop on its own. It happens when the looping condition continues to remain true forever. In such a case, the loop must be forcibly stopped by pressing ctrl-C to generate keyboard interrupt

while statement is very popular looping statement in many languages including Python. Is general usage is: , The block of statements with increased indent after : symbol will be repeatedly executed as long as expr remains true. Obviously, certain provision must be there inside the block which will eventually make expr to be false, otherwise the loop will be an infinite one. Easiest way to d.....