[Python] Convert Crystal Report code to Python code [closed]

I need to convert this code, which is written in Crystal Report, to Python code so that the result is the same when the input text is inserted.

Function (StringVar input)
local stringVar allowedChars:= '!!!#$%&!()*+,-./987651234:;<=>?@ABCDEDGFASD[\]!_!abcdefghijklmnopqrstuvwxyz{|}!';
local stringVar text:='5@'+input+'$'; //Must return '
local numberVar i;
local numberVar sum;
local numberVar k;
local stringVar result;
local stringVar text2;

for i:=1 to Length(text) step +1 do
(
//first occurrence
local numberVar fO:=instr(text,text);

//Weighted calculation
if(fO<i) then sum:= sum + (fO * instr(allowedChars,text))
else sum:= sum + (i * instr(allowedChars,text));

//Unweighted calculation
//sum:= sum + (instr(allowedChars,text));
);

if(sum mod Length(allowedChars)=0)
then result:='0'
else result:=allowedChars[sum mod Length(allowedChars)];
(text+result);

Continue reading...