In this tutorial, we will learn about Python namespace, the scope of a variable and the rules for variable scope resolution. What is Python Namespace? Python namespaces are containers to map names to objects. In Python, everything is an object and we specify a name to the object so that we can access it later …
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We can create loops in Python using for loop and while loop. The for loop is used to iterate over a collection of items such as Tuple, List, Set, Dictionary, String, etc. Python for loop is always used with the “in” operator. The while loop is used to execute a block of code until the …
Python Loops – Things You MUST Know about Loops in Python Read More »
Python Dictionary is a set of key-value pairs. A dictionary is an object of class dict. It’s an unordered collection means that while iterating the order of retrieval is not guaranteed. The dictionary keys and values can be of any type. They can also be None. The key and its value are separated using a …
Python has four built-in data types data, set, tuple, dictionary, and list. These data types can store multiple collections of data. A set is an unordered collection of data, it is iterable, mutable, and has no duplicate elements. A tuple is an ordered collection of data but unlike a set, it is not mutable. A …
Python tuple is an immutable sequence. The tuple is created with values separated by a comma. Since a tuple is immutable, we can’t add or delete its elements. If the tuple elements are not immutable, their properties can be changed. But, we can’t directly change a tuple element. We can create nested tuples. We can …
When a function calls itself, it’s called a recursive function. In this tutorial, we will learn how to write Python recursion function. What is Recursion in Python? When a function is defined in such a way that it calls itself, it’s called a recursive function. This phenomenon is called recursion. Python supports recursive functions. Do …
Python lambda function or Python anonymous function has no name. We can define an anonymous function using the lambda reserved keyword. The anonymous function scope is limited to the current scope where it’s defined. A lambda function can have one or more arguments but it can have only one expression. The expression is evaluated and …
Exceptions are error scenarios that alter the normal execution flow of the program. The process of taking care of the possible exceptions is called exception handling. If exceptions are not handled properly, the program may terminate prematurely. It can cause data corruption or unwanted results. Python exception handling is achieved by three keyword blocks – …
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Numbers are used to store numerical values in the program. Python support three types of numbers – int, float, and complex. Python 2 also supports “long” but it’s deprecated in Python 3. In Python, numbers are also an object. Their data types are – int, float, and complex. There are built-in functions to create numbers …
Python packages help us to manage modules and python scripts. They are normal directories with a init script – __init__.py. How to Create a Python Package? We can create a package by following below steps. Create the package directory – we can use terminal or Python IDE for this. Create __init__.py file – this is …