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Truth value testing verify whether the value is True or False. In Python, any object can be tested for Truth Value. What really the Truth Value is? True is the Truth value. But non boolean values doesn’t have true or false values. For example, numbers do not have true or false value. They are simply […]
Python mapping objects are mutable. Currently, the dictionary is the only mapping object available in Python. Dictionary objects contain key and value pairs. Dictionary keys are non-mutable and we can add mutable or non-mutable objects as values. Defining a dictionary object We use dict constructor to create the dictionary objects. Or we can use a […]
Python provides set and frozenset Set Types to deal with unordered, unique (no duplicates) collections. Even though both of these are Set Types, there is a clear difference between them. sets are mutable whereas frozensets are immutable objects. That means, we can add or remove the elements in sets whereas frozensets doesn’t allow to modify […]
Python supports variety of operations to work with Sequence Types. Almost all Sequence Types supports the common operations which we can apply on any of the Sequence Types what we have discussed in our Previous Articles. In this Article, I am going to explain some of the Common Operations Python supports for Sequence Types. in […]
So far we have discussed the Sequence Types; list, tuple, range, str, bytes, bytearray and memoryview in Python. We have discussed creation of these types and accessing data from them. We have used index operator to access the data from the Sequence Types. By using index operator we can access ONLY one element at the given […]
Another interesting sequence type, Python provides is memoryview. This is completely different than the other sequence types so far discussed. Objects of memoryview class is allowed to access the internal memory of the objects where these objects are referencing. In C language, it is possible to access the memory using pointer variables; in Python; we use […]
A bytearray is also another sequence type in Python; which holds a sequence of bytes. Unlike bytes; bytearray objects are mutable. That means, we can modify the elements in bytearray objects. Define a bytearray Object bytearray objects are created using the bytearray class constructor. There is no relevant literal syntax to create bytearray objects. The […]
bytes is another sequence type in Python which holds sequence of bytes. Like strings, bytes also immutable; that means, once bytes objects are created; we are NOT ALLOWED to modify its’ content. Unlike strings, where it holds sequence of Unicode characters; bytes are ALLOWED ONLY ASCII characters. Each character in a bytes object have the […]
Strings are another sequence types in Python. These are the commonly used types while writing the programs in Python. And these are very useful when we deal with data. Strings in Python are object of str class. str class provides lot of useful functions to deal with data. But I am not going to cover […]
A range is another sequence type in Python and it is a collection of numbers. We have discussed about Python’s sequence types; list and tuple sequence types through our previous Articles. In this Article, we will discuss about range sequence type. As I mentioned above, range is nothing but a collection or sequence of numbers; yes, […]