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Python Articles
Page 838 of 855
How to round down to 2 decimals a float using Python?
In this article, we will show you how to round off a floating number upto 2 decimals in python. Below are the various methods to accomplish this task: Using round() function Using format() function Using Decimal Module Using ceil() function Using round() function The round() function gives a floating point number with a specified number of decimals which is the rounded version of the specified number. The function will return the nearest integer because the default value for the number of decimals is 0. Syntax round(number, digits) Parameters number(required)- a number that should be rounded digits(optional)- ...
Read MoreHow to index and slice a tuple in Python?
A tuple is an ordered and immutable collection of Python objects separated by commas. Like lists, tuples are sequences. Tuples differ from lists in that they can't be modified, whereas lists can, and they use parentheses instead of square brackets. tup=('tutorials', 'point', 2022, True) print(tup) If you execute the above snippet, produces the following output − ('tutorials', 'point', 2022, True) In this article, we will discuss how to index and slice tuples in python. Indexing Tuples In Python, every tuple with elements has a position or index. Each element of the tuple can be accessed or manipulated by ...
Read MoreHow to perform square root without using math module in Python?
In this article, we will show you how to perform square root without using a math module in Python. Below are the various methods to accomplish this task: Using exponential operator ** Using Mathematical Logic Using exponential operator ** Without using the math module, the simplest approach to find the square root of a number in Python is to use the built-in exponential operator ** (It is an exponent operator because it calculates the power of the first operand to the power of the second operand). Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired ...
Read MoreHow can I subtract a day from a Python date?
Introduction It is essential to have a module that can modify date and time since, as we all know, they are utilized in applications where we must keep track of date and time. A DateTime module in Python deals with dates and times (Python Date/Time Tutorial). Python comes with a built-in datetime module. Installation of two new libraries is necessary before any data modification may take place. Dates and timings are quickly retrieved using the arrow library. A DataFrame may be accessed and used thanks to the Pandas library. Go to an IDE console to install these libraries. ...
Read MoreHow to concatenate two files into a new file using Python?
In Python, concatenation is a process that refers to combining two or more strings, lists, or such sequence-like objects into a single object. The concatenation operation when performed is denoted by using the "+" operator. Concatenating two files into a single file can be a useful process when you want to combine the contents of several files. If you want to merge data from different sources or simply create a consolidated file with aggregated data, Python provides a simple no-frills method to accomplish this task. In this article, we will explore different ways of concatenating two files into a ...
Read MoreHow to read text file into a list or array with Python?
Python has built in file creation, writing, and reading capabilities. In Python, there are two sorts of files that can be handled: text files and binary files (written in binary language, 0s, and 1s). There are 6 modes of accessing files. To read a text file we use read only ('r') to open a text file for reading. The handle is at the beginning of the document. There are several ways to read a text file into a list or array using python Using open() method The open() function creates a file object from an open file. The filename ...
Read MoreHow do I copy a file in python?
One of the most prevalent activities in modern software development is copying files programmatically. In today's quick tutorial, we'll look at a few different ways to transfer files in Python using the shutil module. Shutil is a Python Standard Library module that provides a wide range of high-level file operations. Now, when it comes to file copying, the library provides a variety of options based on whether you want to copy metadata or file permissions, as well as if the destination is a directory. It falls within the umbrella of Python's basic utility modules. This module aids in the automation ...
Read MoreHow to work with a text file in Python?
For creating, reading, updating, and removing files, Python includes a number of functions. When reading or writing to a file, the access mode determines the kind of operations that can be performed on the file. Creating a file using Python To create new files or open existing files, we can use the open() function. This function accepts two parameters: a string value representing the name of the file you need to create and a character representing the access mode of the file that is to be created. Following is the syntax of this function. File = open("txt_file_name" ,"access_mode") ...
Read MoreWhat are the differences between list, sequence and slice data types in Python?
We will learn about the differences between list, sequence, and slice data types in Python in this article. Lists − In Python, a list is a type of data that can hold multiple values in a single variable. You can think of it like a shopping list that contains multiple items. For example, you could have a list of numbers like [1, 2, 3, 4, 5] or a list of names like ["John", "Jane", "Bob", "Sue"]. Number_List = [1, 2, 3, 4, 5] Name_List = ["John", "Jane", "Bob", "Sue"] Sequences − In Python, a sequence is a type of data ...
Read MoreHow to escape any special character in Python regular expression?
Regex, often known as regexp, is a potent tool for finding and manipulating text strings, especially when processing text files. Regex may easily replace many hundred lines of computer code with only one line. All scripting languages, including Perl, Python, PHP, JavaScript, general-purpose programming languages like Java, and even word processors like Word, support Regex for text searching. Regex may be challenging to learn because of its complicated syntax, but it is time well spent. Special Characters Text processing becomes more challenging when special characters are included because context must be carefully considered. You must think about what you see, ...
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