A1 → Name     B1 → Marks     C1 → Result
A2 → Arun     B2 → 85        C2 → 
A3 → Kavi     B3 → 40        C3 → 

from openpyxl import load_workbook

wb = load_workbook("marks.xlsx")
sheet = wb.active

marks = sheet["B2"].value

if marks >= 50:
    sheet["C2"] = "PASS"
else:
    sheet["C2"] = "FAIL"

wb.save("marks.xlsx")

for r in range(2, sheet.max_row + 1):
    marks = sheet[f"B{r}"].value

    if marks >= 50:
        sheet[f"C{r}"] = "PASS"
    else:
        sheet[f"C{r}"] = "FAIL"

wb.save("marks_updated.xlsx")

Sheet1: Data

Name | Marks
Arun | 85
Kavi | 40

Sheet2 : Result

Name | Result

data_sheet = wb["Data"]
result_sheet = wb["Result"]

for r in range(2, data_sheet.max_row + 1):
    name = data_sheet[f"A{r}"].value
    marks = data_sheet[f"B{r}"].value
    if marks >= 50:
        result = "PASS"
    else:
        result = "FAIL"
    result_sheet.append([name, result])

wb.save("result_sheet.xlsx")

<?php
$a = 10;
$b = 3;

echo $a + $b; // 13
echo $a - $b; // 7
echo $a * $b; // 30
echo $a / $b; // 3.3333
echo $a % $b; // 1
?>

<?php
$x = 5;
$x += 3; // x = x + 3, result: 8
$x *= 2; // x = x * 2, result: 16
?>

<?php
$a = 10;
$b = 5;

var_dump($a > $b); // true
var_dump($a == $b); // false
var_dump($a != $b); // true
?>

<?php
$x = true;
$y = false;

var_dump($x && $y); // false
var_dump($x || $y); // true
var_dump(!$x);      // false
?>

<?php
$price = 100;
$tax = 0.18;
$total = $price + ($price * $tax);
echo "Total Price: $total"; // 118
?>

var_dump($variable);

<?php
$age = 25;
var_dump($age);
?>

int(25)

<?php
$name = "Saravana";
var_dump($name);
?>

string(8) "Saravana"

<?php
$isActive = true;
var_dump($isActive);
?>

bool(true)

<?php
$colors = array("Red","Green","Blue");
var_dump($colors);
?>

array(3) {
  [0]=> string(3) "Red"
  [1]=> string(5) "Green"
  [2]=> string(4) "Blue"
}