Problem Formulation Given a string representation of a dictionary. How to convert it to a dictionary? Input: ‘{“1”: “hi”, “2”: “alice”, “3”: “python”}’ Output: {‘a’: 1, ‘b’: 2, ‘c’: 3} Method 1: eval() The built-in eval() function takes a string argument, parses it as if it was a code expression, and evaluates the expression. If … Read more
Problem Formulation Given a Unicode string representation of a dictionary. How to convert it to a dictionary? Input: u”{‘a’: 1, ‘b’: 2, ‘c’: 3}” Output: {‘a’: 1, ‘b’: 2, ‘c’: 3} Note: The u’string’ representation represents a Unicode string that was introduced in Python 3. This is redundant as all strings in Python 3 are … Read more
[toc] Generally, logging is an extremely valuable tool in a software developer’s toolbox. Logging helps to assist you with the flow of a program and find situations that you probably would not have considered while coding. By logging useful data and information, you can troubleshoot the errors effectively as well as utilize the information to … Read more
When searching for a list of dunder methods, I only found a couple of resources all over the web—each covering only a fraction of dunder methods. So, here’s my collection of 127 dunder methods (also called “magic methods”) from those sources, sorted alphabetically: __abs__ __add__ __aenter__ __aexit__ __aiter__ __and__ __anext__ __await__ __bool__ __bytes__ __call__ __ceil__ … Read more
The Python language does not generally provide backward compatibility. The ability to break inefficiencies and fix wrong design choices are major reasons why Python has remained lean and efficient over the last decades. However, the PEP 387 standard discusses that incompatibility issues should be well thought out. Here’s the basic policy when backward incompatibilities may … Read more
A simple swap function in Python is generally considered a function that takes two initialized variables, a = val_a and b = val_b, and returns a result of a = val_b and b = val_a. The function accepts variables of arbitrary types, or more precisely, variables that are assigned with objects of arbitrary types. Although … Read more
Pytest is a popular test framework in Python. It helps to automate the test execution process and run unit tests as frequently as possible with minimal effort. Everyone who has at least some experience with computer programming would intuitively know that testing is critical when building a software application. But beginners often find it difficult … Read more
This article gives you five code puzzles to help you master basic looping in Python. If you are a Python expert, you solve all of them without even the slightest mistake. If you are a Python intermediate, you make one or two mistakes. If you are a Python beginner, you should get at least one … Read more
A bootstrap plot is a graphical representation of uncertainty in a characteristic chosen from within a population. While we can usually calculate data confidence levels mathematically, gaining access to the desired characteristics from some populations is impossible or impracticable. In this case, bootstrap sampling and the bootstrap plot come to our aid. This article will … Read more
The following table provides an overview of the Python versions supported by AWS SDK for Python: Name Operating system Python 3.9 Amazon Linux 2 Python 3.8 Amazon Linux 2 Python 3.7 Amazon Linux Python 3.6 Amazon Linux Python 2.7 Amazon Linux Boto3 is the Software Development Kit (SDK) for Python from Amazon Web Services (AWS). … Read more
This article is about a topic that is far more important and even more fundamental than any specific Python tutorial: Libraries. What Are the Top 10 Python Libraries? The following list reflects the most important Python libraries based on my experience: Pandas. “Excel for coders”. NumPy. Fundamental to many libraries in the data science and … Read more
1. Create a new Python project and install the jupyter package using the command pip install jupyter in the “Terminal” view. 2. Open or create a Jupyter notebook that is a file with the suffix .ipynb. 3. Add cells and execute them directly in PyCharm.