How do I merge two dictionaries in a single expression in Python?
To merge two dictionaries in a single expression you can use the dictionary unpacking operator **
. This creates a new dictionary and unpacks all key-value pairs into the new dictionary. Let’s look at the example below.
x = {'firstname': 'John'}
y = {'lastname': 'Doe'}
z = {**x,**y}
This will create a new dictionary z with the value of {'firstname': 'John', 'lastname': 'Doe'}
.
Using OR operator
If you are using python 3.9.0 or greater, you can also use the bitwise OR operator also known as a pipe operator.
z = x | y
The result will be the same.
-
What are metaclasses in Python?
In Python, a metaclass is the class of a class. It defines how a class behaves, including how it is created and how it manages its instances. A metaclass is defined by inheriting from the built-in ...
Questions -
How to use the ternary conditional operator in Python?
The ternary conditional operator is a shortcut when writing simple conditional statements. If the condition is short and both true and false branches are short too, there is no need to use a multi-...
Questions -
What does the "yield" keyword do in Python?
To better understand what yield does, you need first to understand what generator and iterable are. What is iterable When you use a list or list-like structure, you can read the values from the lis...
Questions -
What Does if name == "main" do in Python?
The if __name__ == "main" is a guarding block that is used to contain the code that should only run went the file in which this block is defined is run as a script. What it means is that if you run...
Questions
We are hiring.
Software is our way of making the world a tiny bit better. We build tools for the makers of tomorrow.
Help us in making the internet more reliable.

Help us with developer education and get paid.

Reliability is the
ultimate feature
Delightful observability tools that turn your logs & monitoring into a secret weapon for shipping better software faster.
Explore Better Stack
