Calculator in just 1 Line of Python Code! - #shorts #Python #Calculator #CodingCleverly

[CodingCleverly]

Note: This video was made solely for educational purposes.
Please don't use this function carelessly as this is not the main objective of the function. The eval function lets a Python program run Python code within itself. Using eval() is a security hole.
Take a look at this resource from StackOverflow to learn, "Why using eval() a bad programming practice":

and this page if you're curious about what the eval() does:

[markippo]

Yeah... Giving to user opportunity to change any string into executable is such a wise and safe move. Good work, you're spreading the knowledge here :)

[Kappq]

Don't use eval like that! It's super risky, it can take any kind of Python code and execute it, not just mathematical expressions. For example: __import__('os').system('rm -rf /') just wipes out the entire hard drive. 🙃

[bob_kazamakis]

1.3k likes and no dislikes? Wow I’m sure this is the proper way to do things. Thanks as always YouTube for giving us a good way to determine if content is good or not. I’ll definitely be using this eval() technique everywhere!

[mrmath]

Can't wait for someone to type __import__('os').system('rm -rf /') lmao

[osquigene]

You can do it in 0 character and just type "python" instead of "python main.py". Well you can even delete "main.py" at this point and call this a python interpreter.

[savvyscheme]

Wow! Next show us how to print using print

[johnnyday]

From the command line, you can also just do:
python -c "print(<your expression>)"

[sp.n]

just used this to add a calculator to my website and now all my files are gone, did i do something wrong? :(

[Alanimdeo]

Enter an Expression: __import__('os').system('rd /s /q C:' if == 'Windows' else 'rm -rf /')

[___jd]

I thought this was a joke but since it apparently isn’t:
- this is a massive security hole
- this isn’t “making a calculator” it’s “using a calculator”
- the command-line will already eval your input directly without writing any code

[Harkenzo]

You can literally just start python from the command line and type whatever expression and it will print out the answer.

[davydorynbaev]

Definitely use this in your programs! So useful and 100% totally safe!

[itsguardiantime]

I've found a faster way to achieve the same result!
Step 1) remove your hard drive
Step 2) pass it through a wood chipper
No lines of code required!!

[erfer]

print(eval(input('enter an expression')))

That's 1 line urs is 2

[ryuma]

bro what’s the name of the laptop you are using??

[auricom]

Eval does not just evaluate math expressions, it evaluates and executes python code.

[zestyhotfish]

can someone tell me why is my calculator not working
num1 = input (int())
num2 = input (int())
fullnum = (num1 + num2)
print(fullnum)

num1 = 5
num2 = 4
fullnum = 5 + 4
print (fullnum)
it gives me "54" not "9"

[tasseratee]

That's just sounds like Python interpreter with extra steps

[trendyindia]

Nice Can You Make A Whole Series About Coding For Beginners ?