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Articles by SaiKrishna Tavva
Page 8 of 8
How do I change button size in Python Tkinter?
To change the size of Tkinter Button in python's Tkinter library, we can use the width and height options of the Button widget in terms of text units (characters). Some common approaches We can change button size in python Tkinter by using several methods are as follows. Using Width and Height: we can set the width and height properties of the button to determine the size of the button in text units for text buttons. ...
Read MoreFilter the rows – Python Pandas
In Python Pandas, filtering the rows and fetching any specific column values can be done in serval ways, one of which is by using the Pandas contains() method. Usually, this method is applied to columns that are of the string type, to filter rows based on the sub-string ( i.e. by verifying whether the column contains a specific substring). Steps Involved The Steps involved in filtering the rows in pandas are as follows Reading a CSV File ...
Read MoreHow to change the permission of a directory using Python?
In Python, Modifying the permission of a directory can be done using the subprocess module and, the chmod() Function ( of the os module). Using 'subprocess' Module The subprocess module in Python provides various functions to create a new (child) process and establish a connection to the I/O devices. This module has a function named call(), This function helps us to run the shell commands of the underlying Operating system. You just need to pass the respective command with the desired options (in the recommended order). For example, the command to set permissions read-write permissions to a user in the Unix ...
Read MoreHow to have logarithmic bins in a Python histogram?
In Python to create a logarithmic bin, we can use Numpy library to generate logarithmically spaced bins, and using matplotlib for creating a histogram. Logarithmic bins in a Python histogram refer to bins that are spaced logarithmically rather than linearly. We can set the logarithmic bins while plotting histograms by using plt.hist(bin="") Steps to Create Logarithmic Bins To set logarithmic bins in a Python histogram, the steps are as follows. Import Libraries: Importing 'matplotlib' for plotting and 'numpy' for performing numerical computations. ...
Read MoreHow to save a Python Dictionary to CSV file?
In Python to save a dictionary to a CSV file, we can use the CSV' module. This process slightly depends on the structure of your dictionary. Generally, a CSV file refers to each line is corresponds to a row in a table, and each value in the line is separated by a comma. CSV files are widely used because they are easy to read and write (handling files) and also easy to transfer data in the form of strings. Common Approaches There are various scenarios for saving a Python Dictionary to a CSV file, in this article, we focus ...
Read MoreFile Upload Example in Python
There are two common ways to upload a file using Python. One is through a cloud storage service using a web server, and CGI environment, (also known as an automated file upload system). In this tutorial, we will focus on file uploading using the CGI (Common Gateway Interface) environment. The process involves generating an HTML form for file uploading and a Python script to manage file saving and uploading to the server. The steps involved in uploading files using Python are as follows - Creating HTML Form ...
Read MoreExtract hyperlinks from PDF in Python
To extract hyperlinks from PDF in python can be done by using several libraries like PyPDF2, PDFminer and pdfx etc. PyPDF2 : A python bulit-in library acts as PDF toolkit, allows us to read and manipulate PDF files. PDFMiner : Tool used for extracting information from PDF documents, it focuses entirely on getting and analyzing text data. ...
Read MoreRun a Python program from PHP
In PHP, the 'exec()' or 'shell_exec’ function can be used. It can be executed via the shell and the result can be returned as a string. It returns an error if NULL is passed from the command line or returns no output at all. 'exec()' Function The exec function is used for executing commands in the shell and command line of an external program and optinally capture the last line of the output. Syntax exec(string $command, array &$output = null, int &$return_var = null); 'shell_exec()' Function The shell_exec is similiar to exec but it captures and return the ...
Read MoreHow to click on a link in Selenium with python?
We can click on a link on page with the help of locators available in Selenium. Link text and partial link text are the locators generally used for clicking links. Both these locators work with the text available inside the anchor tags. Link Text: In Selenium a link text is used to hyperlinks on a web page, to create the hyperlinks on a webpage, we can use anchor tag followed by link Text. ...
Read MoreRotate Matrix in Python
Rotating a matrix in python, can be done by utilizing various approaches like Transpose and Reverse method which is commonly used in rotating a matrix by converting the rows to columns and columns to rows. Common Approaches Some of the common methods, we can use to rotate a matrix by 90 degress clockwise are as follows. Layer by Layer Rotation Temp Matrix Method Transpose and reverse 2D ...
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