Tutorial creating virtual environment for Python
By creating virtual environment for Python, you can use different versions of Python on the same system. You first have to create a directory to hold your virtual environment. Let’s call our...
read moreTutorial to Add Jest testing to Node app
While Jest is often used with React, it can also be used on Node apps (without React) as well. It is just a Javascript testing framework. In this tutorial, we will add Jest to a “simple”...
read moreTutorial Selection HTML elements with BeautifulSoup
For this tutorial, we install … pip install beautifulsoup4 Then import “bs4” module and create instance of “BeautifulSoup” by passing into its constructor an HTML...
read moreTutorial Python reading CSV file
Suppose we have a CSV (comma-separated value) file like this… Note that there are no spaces after the comma delimiter otherwise you get space in the values read. We can have Python read this...
read morePython tutorial on using regular expressions
In this first Python tutorial on regular expression, we will extract out the telephone pattern from a this string … The telephone is (123) 456-7890 The regular expression that matches that...
read moreTutorial of Testing Python code
Python DocTest Here we added Python’s DocTest to our greet function … If you run on the command line … python -m doctest -v first.py You will get three tests passing … The...
read moreTutorial Writing Files in Python
Suppose we have test.txt file … The following will open this file in “text” mode for “reading” … Note that you explicitly have to call “close()” on...
read moreTutorial on Python Generators
Generators are a subset of iterators. A generator function is a function that has a yield statement instead of a return statement. It returns a generator object which you can iterate through. ...
read moreTutorial on Python Pickling
In a previous tutorial, we created an instance of Person and Student class. You can serialize this object into a file with the pickle module… This write the john object data in binary form...
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