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In Python, converting different data types into strings is a common requirement when we want to display or store information in text format. The built-in str() function is used for this conversion. This function accepts any Python object as a parameter and returns a string representation of it. The basic syntax of the str() function is as follows: str(object) Where object is any valid Python object, such as int, float, bool, list, etc. In this article, we will explore different data type conversions into a string in Python. Conversion of Integer to String An integer can be converted into ... Read More
When working with strings, we may need to concatenate or join multiple strings together. Python provides several methods to perform the concatenation of strings. Following are various ways to print concatenated strings using a single statement. Using the "+" Operator Using f-string Using format() Method Using join() Method Using print() with Multiple Arguments Using List or Tuple Unpacking Using map() with str Using the "+" Operator The "+" operator is the simplest and most direct way to concatenate two or more strings in Python. It joins the strings end-to-end. Here's an example of using the + operator - ... Read More
A Dictionary is a set of key-value pairs, and each key in a Dictionary is separated from its value by a colon ":"; the items are separated by commas. They do not allow duplicate values. Since the 3.7 Python update, dictionaries are ordered. The correct syntax to create a Python Dictionary is to store values in the form of key-value pairs within the curly braces "{ }". On the left of the colon, we store keys, and on the right, values. The keys should be unique (within one dictionary), and we need to separate the items using commas. Basic ... Read More
Python uses arrays of bytes called strings to represent Unicode characters. In Python, string indexing ranges from 0 to n-1, where n is the length of the string. In a string of size n, the characters can be retrieved from 0 to n-1. For Example, we can index the string "Coding" as 0, 1, 2, 3, 4, 5, in which the length of the string is 6. The first character in the string "Coding" is represented by the number 0, and the characters o, d, i, n, and g are represented by the numbers 1, 2, 3, and 5, respectively. ... Read More
TAR stands for Tape Archive Files. The Tar files are the archive files which allows us to store numerous files in a single file. A Open-source software is distributed using tar files. Tar files typically end in .tar later they can be compressed using tools such as gzip which have the file ending as tar.gz. Different file modes to create a tar file Here are the available different file modes to create a tar file using Python ‐ "w": Write a tar archive without compression. "w:gz": Write a gzip-compressed archive. "w:bz2": Write a ... Read More
The open() function is a built-in Python function that helps you work with files, however, the os module offers low-level file handling functions that give more control over how files are opened and managed, two of such function from the os module are os.open() and os.fdopen(). The key difference between both os.open() and os.fdopen() functions is that os.open() is used to open a file and extract its file descriptor, while os.fdopen() is used to wrap an existing file descriptor and create a file object. What is os.open() Function? The os.open() function in the os module opens the specified file and returns a ... Read More
Changing the ownership of a file is to transfer the file's ownership from one user to another. This is mainly to specify who has control over modifying, deleting, or setting permissions for the file. Before you change the ownership of a file, make sure you have administrative privileges, and the methods discussed below only work on Linux.To change the ownership of a file from one user to another in Python, we can use the following ways - Using os.chown() Method The os.chown() method is used to change the owner and group ID of a file. To this method, we need to ... Read More
Binary file is a file that consists of a series of 1's and 0's. This is typically used to represent data such as images, audio, video, etc. To open the binary files in read and write mode, Python provides an in-built function, which is the open() function. The open() Function The Python open() function is a built-in function that is used to open a file. This method accepts a string value representing a file path (or, name) as a parameter and returns the object of the specified file. In addition to the file path, we can also pass another parameter named ... Read More
You can multiply large numbers in Python directly without worrying about speed. Python supports a "bignum" integer type which can work with arbitrarily large numbers. In Python 2.5+, this type is called long and is separate from the int type, but the interpreter will automatically use whichever is more appropriate. As long as you have version 2.5 or better, just perform standard math operations, and any number which exceeds the boundaries of 32-bit math will be automatically (and transparently) converted to a bignum. To multiply large numbers in Python, we can use the basic multiplication operator or use the fractions ... Read More
In C++, tokens, identifiers, and keywords all are fundamental elements of a program. Tokens are the smallest units of code which are combine together to form complete program, where both keywords and identifiers are the types of tokens. The keywords are reserved words in the language, where each provides separate meanings to code and cannot be used as names by the programmer, whereas identifiers are names defined and used by programmers to represent variables, function or other user-defined elements. In this article, we will learn about all three in detail. Tokens in C++ A token is the smallest element of ... Read More