I created yesterday a Jupyter notebook file in Python 3 and saved it. I do not know what bad manipulation I did but today, when I want to reopen this file, I realize that it is in plain text format! Is there a way to revert to a python encoded format? The file doesn't have extension ipynb (It has no extension) ; it looks like this (few first lines): "cells": [ { "cell_type": "code", "execution_count": 377, "metadata": {}, "outputs": [ { "name": "stderr", "output_type": "stream", "text": [ "C:\\Users\\thaly\\anaconda3\\lib\\site-packages\\pandas\\core\\indexing.py:965: SettingWithCopyWarning: \n", "A value is trying to be set on a copy of a slice from a DataFrame.\n", "Try using .loc[row_indexer,col_indexer] = value instead\n", "\n", "See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy\n", " self.obj[item] = s\n" ] } ], "source": [ "import pandas as pd\n", "\n",```` Continue reading...