Python if else in one line: The simple guide to use it with examples

Python programming language has created its reputation in the global market thanks to its user-friendly as well as the great performance. However, in reality, Python comes with various types of features, and one of the most important ones is if else one line Python. Do you have any knowledge of it? If not, this article is for you. Simply speaking, in this article, ArrowHiTech will give you a general overview about Python if else in one line, in particular the simple instructions to apply it with many effective practical examples. Now, what are you waiting for without exploring it right now! 

What does if else one line Python mean?

Python if else in one line

As you may know, Python doesn’t include ternary operator like many other programming languages in the market. In Python, however, we may use the if-else construct in a single line to get the same result as the ternary operator. 

For more details, the if…else phrase can be converted to a one-line conditional expression in Python and called if else one line Python. Then, we will have to write it in a precise format, validate its syntax, and so on.

what is Python if else in one line

The simple guide to work well with if else one line Python

In order to understand further details about one line if else Python, you should explore many practical examples. Below are helpful instances about this topic.  

Firstly, let’s explore the first syntax below:

value_1 if condition else value_2

In this case, you must know the outcome of this one-liner if…else statement will be value_1 if the condition evaluates to True. Besides, if the condition evaluates to False, then value_2 is the outcome of this one-liner expression. 

Illustrated examples

‘High’ if x > 10 else ‘Low’

As you can see through this syntax above, we apply an if…else statement in a single line. 

  • Simply speaking, the expression will return ‘High’ if the value of x is more than 10.
  • Also, the expression will return ‘Low’ if the value of x is less than 10.

Then, the value returned by the expression can be assigned to another variable.

In order to know the way to use this one liner if else expression, let’s refer to the first instance of if else one line Python below: 

x = 18

result = ‘High’ if x > 10 else ‘Low’

print(result)

As a result, you will get the output:

Python if else in one line

The value of x in this case was 18, which is higher than 10. Hence, the one-liner if-else statement evaluated to ‘High,’ and the variable result was assigned to it.

Then, coming to the second example to describe more about if else one line Python:

x = 5

result = ‘High’ if x > 10 else ‘Low’

print(result)

Therefore, the outcome will be display:

example about Python

As you can see, in this case above, the value of x was 5, which is less than 10. As a result, the one-liner if-else statement evaluated to ‘Low’, and the variable result was assigned to it.

How to work with Python if else in one line effectively?

To avoid confusion, we should use parentheses when utilizing the if-else sentence on a single line. Then, you can refer to the instance below:

x = 20

result = 10 + 10 if x > 100 else 0

print(result)

After that, you will receive the outcome below:

The conditional phrase x>100 was evaluated to False in this case, and the result of the otherwise portion, i.e. 0, was returned. In this case, the value of if-portion is 10+10, i.e., 20.

However, some people may believe that the if..else expression is 10 if x > 100 else 0 and then 10 to the value returned by the expression. If x is less than 100, according to this logic, the value of this equation should be 10. However, in this case, that is incorrect.

how to use Python if else in one line

What’s more, you must use suitable brackets/parenthesis when employing if…else in a single line, such as this in order to prevent that kind of confusion. Then, let’s explore the following instance about if else one line Python:

x = 20

result = 10 + (10 if x > 100 else 0)

print(result)

As a result, the output you will get is:

code

Through this above result, you will see the value of the if-portion in this one-liner if-else expression is now 10, and the else-portion’s value is now 0.

The final line

In short, it seems like applying if else one line Python is quite easy if you can take advantage of these above examples ArrowHiTech provides. Then, if you want to dig down further information about Python or any other programming languages, let’s consider our mobile app development services. With a lot of experience in technology’s area, we believe that you can meet all your requirements with ease. 

Tags

Share