Is it possible to write an entire Python program in one line of code?

I was wondering if that was possible. I googled a bit and found that you can do a bit of work with ;.

But how can you also add functions and code indentation in one line?

(2 votes)
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whgoffline
1 year ago

Everything in one line is probably not going, but you can already significantly shorten this on the cost of readability.

x = ''
if a>5:
    x = 1
else:
    x = 10
#oder
x = 1 if a>5 else 1
#oder
x = [5,1][a>5]

#Neues Beispiel
for i in range(5):
    if a>5:
        print(1)
    else:
        print(10)
    print('-'*10)
#oder
for i in range(5):
 if a>5:print(1)
 else:print(10)
 print('-'*10)
#oder
for _ in' '*5:print([5,1][a>5]);print('-'*10)

#Neues Beispiel
def quadrat(x):
    return x*x

#oder
quadrat = lambda x: x*x

print(quadrat(10))

For more information see: https://codegolf.stackexchange.com/questions/54/tips-for-golfing-in-python

daCypher
1 year ago

Of course, depends on the exact program. In principle, a single liner, such as print(“Hello, World”), is already a complete Python program. Code engagements do not go in one line, so your program may not have multiple commands. Some things like FizzBuzz go but with a little trickery

print(*[(not(x%15) and "FizzBuzz") or (not(x%3) and "Fizz") or (not(x%5) and "Buzz") or x for x in range(1,101)], sep="\n")
whgoffline
1 year ago
Reply to  daCypher

Also goes a little shorter than e.g.

for i in range(1,101):print('Fizz'*(i%3<1)+'Buzz'*(i%5<1)or i)
daCypher
1 year ago
Reply to  whgoffline

Ah, I like code golf 😁

I honestly didn’t bother to make the code as short as possible, but I just wanted to give an example of how to get a Python program in one line.

There are even three more characters shorter:

for i in range(100):print(i%3//2*'Fizz'+i%5//4*'Buzz'or-~i)
aloscha211
1 year ago

Yes, it is possible to write an entire Python program in a single line code, especially if it is very simple programs. Here is a simple example:

python

print("Hello, world!")

This code simply outputs “Hello, world!” on the console.

For more complex programs, however, it quickly becomes impractical to write everything in one line, as legibility and wartability can be severely impaired. In practice, it is therefore more common to divide Python code to several lines in order to make it more understandable.

Nevertheless, there are some competitions or code golfing challenges where developers try to reach as much as possible in a single line code, often using List Comprehensions, Lambdas and other compact Python features. However, this is rather an academic or playful exercise and not the recommended procedure for normal programming.

SusgUY446
1 year ago

At python this becomes difficult because it is based on indentation but at c/cpp and so goes

Swe4rX
1 year ago

It goes when you encrypt the code with base64 because you can’t do some syntax in one line in Python yourself with semicolon

grtgrt
1 year ago

No, that’s not possible:

It shows one of the biggest weaknesses of Python: Who changes the layout in Python code has made this code unusable.

IdenVersio
1 year ago

At Phyton I’m just insecure but at C#, C++ etc., there are whitespaces for formatting only. So you could write an entire program in one line