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Articles by SaiKrishna Tavva
80 articles
How to install a Python package into a different directory using pip?
In Python, pip is a standard tool which is used to install third-party packages in our system. By default, pip installs packages into the site-packages directory of the current Python environment but in some cases, such as restricted environments or creating portable apps, we may need to install packages into a different directory. Then we can use the pip's --target option. Syntax Following is the syntax of using the pip command while installing a python package in a different directory - pip install --target The above command tells pip to install the specified package and all its ...
Read MoreHow to ignore hidden files using os.listdir() in Python?
When we are working with directories in Python, a clutter of hidden files can be created. Hidden files are created with a dot (.) on Unix-like operating systems and we can filter them easily. In this article, we will explore different methods to ignore hidden files using the os module and pathlib. Using List Comprehension with os.listdir() In Python, when we use the os.listdir() method the hidden files i.e., the files those are starting with a dot . are also included in the result. To ignore those hidden files and list only visible files we need to pass a condition ...
Read MoreHow to delete a Python directory effectively?
When we are working with Python files or directories, we may often need to delete them to perform tasks such as cleaning up temporary files. Deleting directories isn't an easy task when compared with deleting files. In this article, we will explore all the different methods to delete a Python directory. Using shutil.rmtree() for Recursive Deletion The shutil module in Python has the rmtree()function, which is used to recursively delete a directory and all its contents. This function takes the directory path as the input parameter. Example Following is the example which uses the function shutil.rmtree() to delete a directory ...
Read MoreHow to get specific nodes in xml file in Python?
XML is abbrivated as Extensible Markup Language which is used format to represent a structured data. It's is useful when we are exchanging information between two systems. In Python, the xml.etree.ElementTree module helps us to read and work with XML data. In this article, we will explore how to extract specific parts of an XML file using this library. Introduction to XML and ElementTree When we are working with XML files in Python, the xml.etree.ElementTree module is used for parsing and navigating XML structures. It reads an XML document and builds a tree of elements from it by allowing us ...
Read MoreHow do you get a directory listing sorted by creation date in Python?
When working with files in Python, it's often useful to sort them based on their creation time. For example, to find the most recently added file or to process files in the order they were created then we need sort them by the creation date. Python provides built-in methods such as os and os.path which makes it easy to retrieve file metadata and sort directory contents accordingly. In this article, we will explore all the different method to sort the directories based on the creation date in Python - Using os.listdir() with sorted() and os.path.getctime() ...
Read MoreHow to copy certain files from one folder to another using Python?
When we are working with files in Python we may need to copy only a certain type of file. Python makes this task simple and flexible by using built-in modules such as os and shutil and pathlib. Copying specific files using shutil and os modules When we want to copy only certain files such as all .txt files from one folder to another in Python then we can use the shutil and os modules. The shutil module is used to perform high-level operations on files such as file copying, moving, archiving and removing directories whereas os module is used to ...
Read MoreHow to merge two Python dictionaries in a single expression?
In Python, a Dictionary is a unordered and muttable data structure which stores data as a key-value pair. In some cases, we may need to merge two dictionaries into a single dictionary by using a single expression, in such scenarios python provides different methods. Using | Merge Operator The | merge operator in Python is used to merge multiple dictionaries into one with a single expression and returns the combined dictionary as a new dictionary. If both dictionaries have the same key, then the value from the dictionary on the right side of the operator will be replaced with the ...
Read MoreHow do I get an ISO 8601 date in string format in Python?
The ISO 8601 standard defines an internationally recognised format for representing dates and times. ISO 8601 is a date and time format that helps remove different forms of the day, date, and time conventions worldwide. In this article, we will discuss several methods to get an ISO 8601 date in string format in Python. ISO 8601 Date Format In Python, ISO 8601 date is represented as "YYYY-MM-DDTHH:MM:SS.mmmmmm" format. For example, August 25, 2023, is represented as 2023-08-25T14:35:45.123456. YYYY: Year (four digits) MM: Month (from 1-12) DD: Days (from ...
Read MoreHow do I get time of a Python program\\\'s execution?
Python provides different ways to find the execution time taken by a script or specific parts of the code such as using the functions from the time module, like time.time() or time.clock(). The following are some common methods used to measure execution time in Python: Using time.time() Function Using time.process_time() Function Using timeit Module Getting Program Execution Time Using time.time() Function The time.time() function returns the current time as a floating-point number that indicates the seconds elapsed since the epoch (when time began). To calculate the execution time ...
Read MoreHow to measure time with high-precision in Python?
Python provides various modules, such as time, datetime, and timeit, to measure time with high accuracy. These modules offer high-resolution clocks to measure time intervals. The following are several methods used to measure time with high precision in Python. Using time.time() Method Using time.perf_counter() Function Using timeit.default_timer() Using time.time() Method for Simple Timing The time.time() method returns the current time in seconds since the epoch as a floating-point number. The epoch is system-dependent, but on Unix-like systems, it is typically January 1, 1970, 00:00:00 (UTC). ...
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