Why is '1' being added onto my command when I try to run it in PHP

I have a python file that calls an api and gets some information back that I then need to use in a PHP file. But running the php gives me back "'1' is not recognized as an internal or external command, operable program or batch file." Is this related to me using sys.argv in the python file?
Specifically:

id_num = sys.argv[1]

My php I am testing looks like this:

<?php
function getData($var_one)
{
    $cd_command = 'cd Location';
    $command = 'python getData.py ' . $var_one;
    print($command);
    $output = shell_exec($cd_command && $command);
    return $output;
}

$test_string = getData("CRT67547");
print($test_string);
?>

The print is there to make sure nothing was wrong in the command and that print output looked fine.
Print output looked like python getData.py CRT67547

EDIT: reread the question, modified for clarity

You may want to modify the shell_exec parameter in your PHP. && is an AND logical operator in PHP, but I assume you want it to be executed in your shell along with your two commands like so:

$output = shell_exec($cd_command . '&&' . $command);

Or, to make your overall code more concise:

function getData($var_one)
{
    $command = 'cd Location && python getData.py ' . $var_one;
    $output = shell_exec($command);
    return $output;
}

Your shell should then run cd Location && python getData.py CRT67547.

Depending on how you set your Location, you could even do:

function getData($var_one)
{
    $command = 'python Location/getData.py ' . $var_one;
    $output = shell_exec($command);
    return $output;
}

which you can simplify down to:

function getData($var_one)
{
    return shell_exec('python Location/getData.py ' . $var_one);
}