从PHP调用Python脚本的函数

Question

I have Python script with a fucntion. I want to call this function from PHP while passing two parameters to the function.
What am i doing wrong here? :/

myscript.py

def InitPython(ID,Name):
      'DO STUFF'

PHP

 $varone='bleh';
    $vartwo='blah';
    $output = shell_exec("myscript.py '$varone' 'vartwo' ");