Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Niharikaa Aitam
Page 3 of 8
How do I do a case-insensitive string comparison in Python?
In Python, string comparisons are case-sensitive by default. For example, when we consider the strings "Hello" and "hello" then they are considered as two different strings because of the difference in their letter casing. Case-insensitive String Comparison in Python In some tasks, such as searching user input, comparing filenames, or processing natural language, it's important to compare strings without considering case differences. To perform string comparison in Python, we have several built-in methods such as lower(), upper(), and casefold(), which help us to normalize the casing of strings before comparing them. ...
Read MoreHow to match a non-whitespace character in Python using Regular Expression?
A non-whitespace character is any character that is not a space, tab i.e., \t, newline i.e., or carriage return \r. Examples of non-whitespace characters such as letters, digits, punctuation and special symbols. In Python, Regular Expressions (RegEx) are used to match the patterns in the given input strings. The re module in Python provides different methods to use the regular expressions. This module helps the developers to perform search operations, validations, filtering and much more based on string patterns. To match a non-whitespace character in Python we can use the special character class \S inside a raw string in any ...
Read MoreWhat is the difference between Python\\\\\'s re.search and re.match?
In Python, Regular expressions are also called RegEx, which is a sequence of characters that defines a search pattern. The re module provides several functions to work with patterns in text. This is widely used in Python tasks such as string matching, validation, and manipulation. The most commonly used functions in the "re" module are re.match() and re.search(). These two methods are used to check for the presence of a pattern, but they differ in the way they look for a pattern match within a string. In this article, we are going to see the difference between the Python re.search() ...
Read MoreHow to get the maximum file name length limit using Python?
In Python, when performing file operations such as creating or renaming files, one of the limitations is the maximum length limit of a file name, and when we exceed this limit, then results in errors such as OSError: [Errno 36] File name too long. Using os.pathconf() function In Python, the os.pathconf() function is used to get system-specific configuration values related to files and directories. This function also helps in checking limits such as the maximum file name length or the maximum path length allowed by the file system. Syntax Following is the syntax of using the os.pathconf() function - os.pathconf(path, name) ...
Read MoreHow to match a word in python using Regular Expression?
In Python, Regular Expressions (RegEx) are used to match patterns in the given input strings. The re module in Python provides different methods to use the regular expressions. This module helps the developers to perform search operations, validations, filtering, and much more based on string patterns. In this article, we will explore different ways to match a word in Python using the re module. Match a Specific Word using re.search() In Python, the re.search() method is used to search for a pattern within a given string. If the pattern is found, then it returns a match object otherwise, it returns ...
Read MoreHow can I match the start and end in Python\\\\\\\'s regex?
In Python, the re module is used to work with regular expressions. In some cases, we need to check whether a string starts or ends with a specific pattern, and then we need to use special regex characters called anchors. Following are the anchors used in regular expressions - ^ − This anchor matches the beginning of a string. $ − This anchor matches the end of a string. Python Regex Methods The following methods from the re module are commonly used to apply start and end matching - ...
Read MoreHow to match non-word characters in Python using Regular Expression?
A Non-word character is any type of character that is not a letter, digit, or underscore, i.e., anything other than [a-z, A-Z, 0-9_]. Examples of non-word characters are symbols, punctuation marks, spaces, tabs, and other special characters. In Python, Regular Expressions (RegEx) are used to match the patterns in the given input strings. The re module in Python provides different methods to use the regular expressions. This module helps the developers to perform search operations, validations, filtering and much more, based on string patterns. To match a non-word character in Python, we can use the special character class \W inside ...
Read MoreHow to recursively iterate a nested Python dictionary?
A Dictionary in Python is a mutable, unordered collection of data in a key-value format. A dictionary can also contain another dictionary as a value and this is known as a Nested Dictionary or a dictionary within a dictionary. When working with this type of data structure, it’s often important to go through each key-value pair at every level. In this article, we will explore how to recursively iterate through a nested Python dictionary using a function-based approach. Syntax to iterate through a Dictionary recursively Following is a sample syntax for recursively iterating through a nested dictionary - def recursive_iter(d): ...
Read MoreWhat is the maximum size of list in Python?
In Python, a list is a dynamic array that can be expanded in size as needed. The maximum size of a list is limited by the system's memory and the platform's architecture. In this article, we will explore how to determine the maximum size of a list in Python. Understanding Python List Limits The size of a list in Python is not restricted by any fixed value set in the language itself but also it depends on below factors - Available system memory (RAM) System architecture, i.e., 32-bit or 64-bit The value of ...
Read MoreWhat is the maximum length of string in Python?
In Python, strings are dynamic and can extend to a very large size, and can be limited only by the system's available memory. In other languages, compared to Python, it does not define a strict upper bound on string length. Instead, the practical maximum length of a string depends on the platform and memory constraints. In this article, we will explore how to determine the theoretical maximum string length in Python. Maximum Theoretical String Length Python strings are stored as sequences of Unicode characters, and the maximum size of a Python object is typically constrained by the value of sys.maxsize ...
Read More