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Articles by Sarika Singh
Page 9 of 14
How to handle a python exception within a loop?
The looping technique in Python transforms complex problems into simple ones. It allows us to change the flow of the program so that instead of writing the same code over and over, we can repeat it a limited number of times until a certain condition is satisfied. For example, if we need to display the first ten natural numbers, we can do it inside a loop that runs up to ten iterations rather than using the print command ten times. Python offers three ways to loop a block of code in a program: using for loops, while loops and ...
Read MoreHow to call a function with argument list in Python?
The purpose of a function is to perform a specific task using code blocks. In programming, functions save time by eliminating unnecessary and excessive copying and pasting of code. Hence, a function will be of great use if there is a common action that needs to be performed in different places and often. The only thing you will need to do is update that specific function, if you want to make a change. As a result, you no longer have to copy and paste the same piece of code that is scattered throughout your program in order to find ...
Read MoreHow to ignore an exception and proceed in Python?
An exception is an unexpected error or event that occurs during the execution of program. The difference between an error and an exception in a program is that, when an exception is encountered, the program deflects from its original course of execution whereas when an error occurs, the program is terminated. Hence, unlike errors, an exception can be handled. Therefore, you won't have a program crash. However, in some cases of Python, the exception might not cause the program to terminate and will not affect the direction of execution hugely. Therefore, it is best to ignore such kind of exceptions. ...
Read MoreHow to print the Python Exception/Error Hierarchy?
We will learn about what an exception is before learning how to print Python exceptions. An exception occurs when a program fails to execute in the direction it was intended to be. Python throws exceptions when unexpected errors or events occur. It is common for exceptions to be both valid and invalid. Errors and exceptional conditions can be managed in a program through exceptions in a variety of ways. The exception handling technique can be used when you suspect your code may create an error. This can prevent the software from crashing. Following are some common Exceptions in Python - IOError ...
Read MoreHow do I check if a Python variable exists?
Variables are defined as the containers used to store some data. They represent a memory location. Any type of data or value can be stored in a variable in Python, including integers, strings, float, Boolean etc. In Python, a variable's data type does not need to be specified when it is defined in a program. However, before any function or application can use variables, they must be defined first. It can be done by simply assigning a value to a name as shown below - x = 5 Here, x is the name of a variable. Also, since x ...
Read MoreHow we can call Python function from MATLAB?
MATLAB has a built-in feature called Python integration that allows you to call Python functions directly from your MATLAB code. You don't need to install any extra tools or software as long as Python is already installed on your system; MATLAB can work with it. With Python integration, you can call Python functions, use Python libraries, and interact with Python objects right inside MATLAB. To do this, simply use the py. prefix before the name of the Python function or module. To make this work smoothly, make sure your Python environment is properly set up. Also, the Python ...
Read MoreWhy does Python code run faster in a function?
In Python, you may notice that code runs faster when it is placed inside a function rather than running directly in the top-level script (global scope). This is due to how Python manages variable lookups and optimizes execution inside functions. Functions have their own local scope, which is much faster to access compared to the global scope. Also, Python internally applies several optimizations when it detects function boundaries. Reasons for Faster Execution in Functions Here are the main reasons why Python code executes faster inside a function - Local Variable Access: Local variables are stored in a fixed-size array, ...
Read MoreWhere\\\'s the standard python exception list for programmers to raise?
In Python, an exception is an error that occurs at the time of execution. These will terminate the program abruptly. If you are a programmer looking to raise meaningful exceptions, it is important to know the list of standard exceptions Python provides. What Are Python Exceptions? Exceptions in Python are built-in classes that inherit from the base class BaseException. They help you to manage errors like missing files, wrong data types, division by zero, or custom business logic violations. Where Can You Find the Full List? The complete list of built-in exceptions is available in the official Python documentation. You ...
Read MoreWhat is unexpected indent in Python?\\\\\\\\n
In Python, indentation is used to define the structure and flow of code. Unlike many other programming languages that use braces to define code blocks, Python relies on indentation. If the indentation is incorrect or inconsistent, Python will throw an IndentationError, specifically an unexpected indent error. In this article, we will understand what the unexpected indent error is, how it occurs, and how to fix it. Understanding Indentation in Python In Python, indentation is used to define the boundaries of code blocks, such as loops, conditionals, functions, and classes. Python uses indentation levels (spaces or tabs) to define code blocks, ...
Read MoreHow can we return a dictionary from a Python function?
Any object, such as a dictionary, can be the return value of a Python function. To do so, create the dictionary object in the function body, assign it to any variable, and return the dictionary to the function's caller. Data values are stored as key-value pairs in dictionaries. A Python dictionary is a collection that is ordered, changeable, and forbids duplicates. In this article, we will discuss various methods to return a dictionary from a Python function. Using Dictionary Comprehension One line of Python code can create and initialize dictionaries using the simple and memory-efficient way known as Dictionary Comprehension. ...
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