Python Eval programming tutorial

The expression argument is parsed and evaluated as a Python expression (technically speaking, a condition list) using the globals and locals dictionaries as global and local namespace. If the globals dictionary is present and lacks ‘__builtins__’, the current globals are copied into globals before expression is parsed. This means that expression normally has full access to the standard builtins module and restricted environments are propagated. If the locals dictionary is omitted it defaults to the globals dictionary. If both dictionaries are omitted, the expression is executed in the environment where eval() is called. The return value is the result of the evaluated expression. Syntax errors are reported as exceptions.

[silverfluoride]

Thank you for the video, my lecturing book is quite misunderstandable...

[abhishekmann]

list string
list strin
list stri
list str
list st
list s
list
liste
lister
listeri
listerin
LISTERINE!

So that's the secret to your pearly whites eh Harrison? :)
Loved your basics series. Thank you so much

[sliddjur]

So why would one use eval? I don't get it

[cardoran]

but isn't eval just as dangerous as exec, since you can always evaluate e.g. eval("exec('x=5')")? it actually works in python 3.5 on my pc

[mamazu]

You could also do this with regex very well but this is not the point. The question I have is can you acess a function with this previously defined by yourself in the "real" code?

[JohnForbes]

The dark side of the force is a pathway to many abilities some consider to be...unnatural.

[krishnasharma]

ure explanation and mine textbook explanation are bit different hence no idea who is correct and what is the usage of EVAL? but youre video was good

[purpleice]

String version of a dictionary is literally the same as json string...

Also eval is just not really useful unless you need to have built in scripting in python program for realtime evaluation.

[viveksingh-dcny]

I have dictionary in a list
And using API to get that
So should I use Eval or pickle?

[SilverMiraii]

trying to find a solution for evaluating only mathematical expressions

[niczwerg]

Really?!? I wrote an extra function, that turns a  string like "(1, 4, 7, 2)" into a tuple... lol... ;)

Thx your tutorials are awesome!

[secondsight]

you look like if snowden had a buzzcut and beard

[fatihabamaarouf]

m working with anaconda what s that u re using pls !

[kurshitha]

Sir can u explain print(eval('1*-2'*2)) of output 42(how it works)

[theglobalconflict]

is it possible to make my own eval() function by myself????