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The % symbol is defined in Python as modulo operator. It can also be called remainder operator. It returns remainder of division of two numeric operands (except complex numbers).>>> a=10 >>> b=3 >>> a%b 1 >>> a=12.25 >>> b=4 >>> a%b 0.25 >>> a=-10 >>> b=6 >>> a%b 2 >>> a=1.55 >>> b=0.05 >>> a%b 0.04999999999999996

The bitwise operator ~ (pronounced as tilde) is a complement operator. It takes one bit operand and returns its complement. If the operand is 1, it returns 0, and if it is 0, it returns 1For example if a=60 (0011 1100 in binary) its complement is -61 (-0011 1101) stored in 2's complement>>> a=60 >>> bin(a) '0b111100' >>> b=~a >>> a 60 >>> >>> b -61 >>> bin(b) '-0b111101

In this tutorial, we will learn how to subtract days from a date in JavaScript. To subtract days from a JavaScript Date object, use the setDate() method. Under that, get the current days and subtract days. JavaScript date setDate() method sets the day of the month for a specified date according to local time. Following are the methods we can use to subtract days from a date in JavaScript − Using the setTime() and getTime() methods Using the setDate() and getDate() methods ... Read More

In C/C++ and Java etc, ++ and -- operators are defined as increment and decrement operators. In Python they are not defined as operators.In Python objects are stored in memory. Variables are just the labels. Numeric objects are immutable. Hence they can't be incremented or decremented.However, prefix ++ or -- doesn't give error but doesn't perform either.>>> a=5 >>> b=6 >>> ++a 5 >>> --b 6Postfix ++ or -- produce errors>>> a=5 >>> b=6 >>> a++ SyntaxError: invalid syntax >>> b-- SyntaxError: invalid syntax

In Python % is an arithmetic operator that returns remainder of division operation. It is called modulo or remainder operator and operates upon numeric operands except complex numbers>>> a=10 >>> a%3 1 >>> a%5 0 >>> b=12.5 >>> b%2.5 0.0 >>> b%2 0.5

In Python, ^ is called EXOR operator. It is a bitwise operator which takes bits as operands. It returns 1 if one operand is 1 and other is 0.Assuming a=60 (00111100 in binary) and b=13 (00001101 in binary) bitwise XOR of a and b returns 49 (00110001 in binary)>>> a=60 >>> bin(a) '0b111100' >>> b=a^2 >>> bin(b) '0b111110' >>> a=60 >>> bin(a) '0b111100' >>> b=13 >>> bin(b) '0b1101' >>> c=a^b >>> bin(c) '0b110001'

In Python, 'not in' membership operator evaluates to true if it does not finds a variable in the specified sequence and false otherwise. For example >>> a = 10 >>> b = 4 >>> l1 = [1,2,3,4,5] >>> a not in l1 True >>> b not in l1 False Since 'a' doesn't belong to l1, a not in b returns True. However, b can be found in l1, hence b not in l1 returns False

Ternary operator was added in Python 2.5. Its syntax is:Syntaxx if expr==True else yExampleFollowing example illustrates usage>>> percent=59 >>> 'pass' if percent>=50 else 'fail' 'pass' >>> percent=45 >>> 'pass' if percent>=50 else 'fail' 'fail'

The keys() method of Python dictionary class returns a view object consisting of keys used in the dictionary.>>> d1 = {'name': 'Ravi', 'age': 21, 'marks': 60, 'course': 'Computer Engg'} >>>d1.keys() dict_keys(['name', 'age', 'marks', 'course'])It can be stored as a list object. If new key-value pair is added, the view object is automatically updated.>>> l1=d1.keys() >>> l1 dict_keys(['name', 'age', 'marks', 'course']) >>>d1.update({"college":"IITB"}) >>> l1 dict_keys(['name', 'age', 'marks', 'course', 'college'])

The update method is one of the methods of dictionary data structure. It is used to update the values in the already created dictionary which means it adds a new key value pair to the dictionary. The updated key and value will be updated at the last. The dictionary is represented by curly braces{}.The dictionary contains key and value pairs, combinedly called as items which can accept any data type of elements as values. It is mutable which means once the dictionary is created we can apply the changes. It has key, value pairs separated by colon and the key ... Read More