Python return if-else one line | Example code

How to return if-else one line in Python function?

It is simple you can write if block statements into a single line with the default return value in the return statement of function.

You can check out the ternary operator (conditional expression):

Example Python return if-else one line

Return true if the letter “e” is present in the string or word.

def hasLetter(word):
    return True if 'e' in word else False


print(hasLetter("Test"))

Output:

Example Python One Line Return if

def f(x):
    return None if x == 0

Write the return statement with an if expression in a single line of Python code example. Print the results of all three function executions for a given value.

# Method 1
def f1(x):
    if x == 0:
        return None


# Method 2
def f2(x):
    if x == 0: return None


# Method 3
def f3(x):
    return None if x == 0 else 7


# Test
print(f1(10))
print(f2(10))
print(f3(10))

Output:

None
None
7

Do comment if you have any doubts and suggestions on this Python if-else topic.

Note: IDE: PyCharm 2021.3.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.