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In python is every variable defined as a global scope? Can someone explain variable scope for python with the following example? This is for python 2.7 but I wouldn't mind a python 3 explanation

Python

test = [1,2,3]

print test

def fun():
    print test

fun()

Output:

[1, 2, 3] 
[1, 2, 3]

PHP

<?php

$test = [1,2,3];

var_dump($test);


function fun()
{
   var_dump($test); 
}

fun();
?>

Output:

array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}
NULL
PHP Notice:  Undefined variable: test in /home/coderpad/solution.php on line 10

EDIT Saw this post Python class scoping rules but I am still confused.

Community
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c3cris
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  • theres a lot of info in that link you posted so maybe clarifying what is still confusing you? – R Nar Oct 22 '15 at 19:16
  • `$test` is not declared as a global this in the `fun()` scope you can't access it, call `fun($test);` – ka_lin Oct 22 '15 at 19:20

1 Answers1

0

You defined a global variable test in Python and global variables are accessible in functions. To achieve the same effect in PHP, you would have to write:

<?php

$test = [1,2,3];

var_dump($test);


function fun()
{
   global $test; // <---- add this
   var_dump($test); 
}

fun();

to achieve the same effect. You can find more information about Python variable scope here.

MartyIX
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