Even though dictionary itself is not an iterable object, the items(), keys() and values methods return iterable view objects which can be used to iterate through dictionary. The items() method returns a list of tuples, each tuple being key and value pair. , Key and value out of each pair can be separately stored in two variables and traversed like this − , Using iterable of keys(.....

Python's dictionary class has three methods for this purpose. The methods items(), keys() and values() return view objects comprising of tuple of key-value pairs, keys only and values only respectively. The in-built list method converts these view objects in list objects. ,

The __dict__ attribute returns a dictionary out of fields of any object. Let us define a class person , We now declare an object of this class and obtain its __dict__ attribute which turns out to be dictionary object ,

There are two ways available to access value associated with a key in a dictionary collection object. The dictionary class method get() takes key as argument and returns value. , Another way is to use key inside square brackets in front of dictionary object ,

Easiest way is to create a zip object that returns a generator of tuples, each having an item each from two lists. The zip object can then be transformed into a dictionary by using built-in dict() function ,

Each Python object is assigned a unique identification number when it is stored in memory. It can be fetched by id() function. The is operator compares id() of two objects and returns True if both objects have same value otherwise it returns false. The is not operator on the other hand returns false if id() of objects is same and true otherwise. Following piece of interpreter activity wil.....

Following table shows all assignment operators − Operator Description Example = Assigns values from right side operands to left side operand c = a + b value of a + b into c += It adds right operand to the left operand and assign the result to left operand c += a add a into c -= It subtracts right operand from the left operand and assign the result to left operand c -= a subtract a f.....

Bitwise operators operate upon bits as operands. Following bitwise operators are defined in Python − & (bitwise AND): returns 1 if both bit operands are 1 | (bitwise OR): returns 1 even if one of two bit operands is 1 ^ (bitwise XOR): returns 1 only if one operand is 1 and other is 0 ~ (bitwise complement): returns 1 if operand is 0 and vice versa << (bitwise left-shift): b.....

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 , 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

In Python is not membership operator evaluates to false if the variables on either side of the operator point to the same object and true otherwise. For example − , Since id() of variables a and b are different is not operator returns true.