Convert py to exe

I am beginner with python and converted .py file into exe. but while executing exe file I am getting below error. please help me to fix this

Traceback (most recent call last):
File “test1.py”, line 5, in
NameError: name ‘null’ is not defined
[1440] Failed to execute script test1

Below is test1.py code

{
“cells”: [
{
“cell_type”: “code”,
“execution_count”: null,
“metadata”: {},
“outputs”: ,
“source”: [
“w=input(“Enter your name”)\n”,
“print(w)\n”,
“input(“Press enter to stop the program”)”
]
}
],
“metadata”: {
“kernelspec”: {
“display_name”: “Python 3”,
“language”: “python”,
“name”: “python3”
},
“language_info”: {
“codemirror_mode”: {
“name”: “ipython”,
“version”: 3
},
“file_extension”: “.py”,
“mimetype”: “text/x-python”,
“name”: “python”,
“nbconvert_exporter”: “python”,
“pygments_lexer”: “ipython3”,
“version”: “3.8.5”
}
},
“nbformat”: 4,
“nbformat_minor”: 4
}

Your file is in Jupyter notebook format. A .py file should be just plain text, with the code in it. In other words, test1.py should contain this instead:

w = input("Enter your name")
print(w)
input("Press enter to stop the program")

In Jupyter Lab, you can edit plain Python files in addition to notebooks.

I am beginner with python and converted .py file into exe. but while
executing exe file I am getting below error. please help me to fix this

1: This is nothing to do with being an exe.

Traceback (most recent call last):
File “test1.py”, line 5, in
NameError: name ‘null’ is not defined
[1440] Failed to execute script test1

The name “null” is unknown. Looking at your code below:

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,

There’s the problem. If you adapted this from, say, JavaScript, the
equivalent name to “null” in JavaScript is “None” in Python. Note the
upper case “N”.

Cheers,
Cameron Simpson cs@cskk.id.au