Python command-line arguments are the parameters provided to the script while executing it. The command-line arguments are used to provide specific inputs to the program. What is the benefit of Python Command Line Arguments? Python command-line arguments help us to keep our program generic in nature. For example, we can write a program to process […]
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Python doesn’t have a ternary operator. But, it supports writing an if-else statement in such a way that it works as a Python ternary operator. Why Python doesn’t have a special ternary operator? Many programming languages have ternary operators. But, their main purpose is to reduce the code size by removing simple if-else blocks. Python
Python self variable is used to bind the instance of the class to the instance method. We have to explicitly declare it as the first method argument to access the instance variables and methods. This variable is used only with the instance methods. In most of the Object-Oriented programming languages, you can access the current
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Python doesn’t have explicit array data structure. It’s because we can do the same things with the List. The list contains a collection of items and it supports add/update/delete/search operations. That’s why there is not much use of a separate data structure in Python to support arrays. An array contains items of the same type
Python modulo operator (%) is used to get the remainder of a division. The modulo operation is supported for integers and floating point numbers. The syntax of modulo operator is a % b. Here “a” is dividend and “b” is the divisor. The output is the remainder when a is divided by b. If both
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Python doesn’t support switch-case statements. There was a proposal to introduce Python switch case statements in PEP-3103 but it was rejected because it doesn’t add too much value. We can easily implement switch-case statements logic using the if-else-elif statements. However, we can implement switch-case like behavior in Python using custom code. Implementing Switch-Case in Python
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Python yield keyword is used to create a generator function. The yield keyword can be used only inside a function body. When a function contains yield expression, it automatically becomes a generator function. The generator function returns an Iterator known as a generator. The generator controls the execution of the generator function. When generator next()
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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
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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