cm_310.ipynb

{
 "metadata": {
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.10.0"
  },
  "orig_nbformat": 2,
  "kernelspec": {
   "name": "python3",
   "display_name": "Python 3.10.0 64-bit",
   "metadata": {
    "interpreter": {
     "hash": "0af001259c9085d3649b2fae0bd6b291d17df5c9f127f6973a1b7698b4048c39"
    }
   }
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2,
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "with (open('file1.txt', 'r') as fin,\n",
    "      open('file2.txt', 'w') as fout):\n",
    "    fout.write(fin.read())"
   ]
  }
 ]
}

fout) may be causing an error
Isn't it just fout: ?

fout: would miss the closing bracket of with (