Learning JavaI’ve been thinking about learning Java and Spring Boot Framework as an alternative to Django/Flask. Ho

How to count the frequencies of elements in a list? Convert to a dictionary with key is the element, value is the frequ

How to sort a dictionary? It’s obvious to use the built-in sorted function, as it’s written in C and optimized already.

For data with fixed format, they can be stored as tuples. Compared to dictionary, tuples save more space. However if we

It’s a common operation to filter elements in list, dictionary and set. For loopdata = [-1, 2, 3, -4, 5]# filter out the

While building a project in Django, it’s common to encounter multiple inheritance. For example, Django’s own ListView cl

Cookiecutter is a cli tool creating projects from templates.Cookiecutter Django is a good starting point to structure an

Building a webapp with flask could involve a couple of more advanced topics in Python, Flask and SQLAlchemy Event and Ro

Processes and threads are used to allocate computer resources in an optimal manner. Process A process is a unit for OS t

In Flask, there are two types of context: AppContext, it’s a Flask object app = Flask(__name__) RequestContext, it’s

Understanding the difference between Class Var and Instance Var is fundamental to OOP. Class VarGiven a class Lang, as b

One of the common mistakes using Flask is circular import.To avoid it, we can split one application file into three file