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add everyting for docs
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docs/extras/integrations/document_loaders/bibtex.ipynb
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docs/extras/integrations/document_loaders/bibtex.ipynb
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{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "bda1f3f5",
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"metadata": {},
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"source": [
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"# BibTeX\n",
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"\n",
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"> BibTeX is a file format and reference management system commonly used in conjunction with LaTeX typesetting. It serves as a way to organize and store bibliographic information for academic and research documents.\n",
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"\n",
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"BibTeX files have a .bib extension and consist of plain text entries representing references to various publications, such as books, articles, conference papers, theses, and more. Each BibTeX entry follows a specific structure and contains fields for different bibliographic details like author names, publication title, journal or book title, year of publication, page numbers, and more.\n",
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"\n",
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"Bibtex files can also store the path to documents, such as `.pdf` files that can be retrieved."
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]
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},
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{
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"cell_type": "markdown",
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"id": "1b7a1eef-7bf7-4e7d-8bfc-c4e27c9488cb",
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"metadata": {},
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"source": [
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"## Installation\n",
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"First, you need to install `bibtexparser` and `PyMuPDF`."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 26,
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"id": "b674aaea-ed3a-4541-8414-260a8f67f623",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"#!pip install bibtexparser pymupdf"
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]
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},
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{
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"cell_type": "markdown",
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"id": "95f05e1c-195e-4e2b-ae8e-8d6637f15be6",
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"metadata": {},
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"source": [
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"## Examples"
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]
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},
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{
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"cell_type": "markdown",
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"id": "e29b954c-1407-4797-ae21-6ba8937156be",
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"metadata": {},
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"source": [
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"`BibtexLoader` has these arguments:\n",
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"- `file_path`: the path the the `.bib` bibtex file\n",
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"- optional `max_docs`: default=None, i.e. not limit. Use it to limit number of retrieved documents.\n",
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"- optional `max_content_chars`: default=4000. Use it to limit the number of characters in a single document.\n",
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"- optional `load_extra_meta`: default=False. By default only the most important fields from the bibtex entries: `Published` (publication year), `Title`, `Authors`, `Summary`, `Journal`, `Keywords`, and `URL`. If True, it will also try to load return `entry_id`, `note`, `doi`, and `links` fields. \n",
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"- optional `file_pattern`: default=`r'[^:]+\\.pdf'`. Regex pattern to find files in the `file` entry. Default pattern supports `Zotero` flavour bibtex style and bare file path."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 27,
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"id": "9bfd5e46",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"from langchain.document_loaders import BibtexLoader"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 28,
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"id": "01971b53",
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"metadata": {},
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"outputs": [],
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"source": [
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"# Create a dummy bibtex file and download a pdf.\n",
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"import urllib.request\n",
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"\n",
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"urllib.request.urlretrieve(\n",
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" \"https://www.fourmilab.ch/etexts/einstein/specrel/specrel.pdf\", \"einstein1905.pdf\"\n",
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")\n",
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"\n",
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"bibtex_text = \"\"\"\n",
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" @article{einstein1915,\n",
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" title={Die Feldgleichungen der Gravitation},\n",
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" abstract={Die Grundgleichungen der Gravitation, die ich hier entwickeln werde, wurden von mir in einer Abhandlung: ,,Die formale Grundlage der allgemeinen Relativit{\\\"a}tstheorie`` in den Sitzungsberichten der Preu{\\ss}ischen Akademie der Wissenschaften 1915 ver{\\\"o}ffentlicht.},\n",
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" author={Einstein, Albert},\n",
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" journal={Sitzungsberichte der K{\\\"o}niglich Preu{\\ss}ischen Akademie der Wissenschaften},\n",
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" volume={1915},\n",
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" number={1},\n",
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" pages={844--847},\n",
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" year={1915},\n",
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" doi={10.1002/andp.19163540702},\n",
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" link={https://onlinelibrary.wiley.com/doi/abs/10.1002/andp.19163540702},\n",
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" file={einstein1905.pdf}\n",
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" }\n",
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" \"\"\"\n",
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"# save bibtex_text to biblio.bib file\n",
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"with open(\"./biblio.bib\", \"w\") as file:\n",
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" file.write(bibtex_text)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 29,
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"id": "2631f46b",
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"metadata": {},
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"outputs": [],
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"source": [
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"docs = BibtexLoader(\"./biblio.bib\").load()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 30,
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"id": "33ef1fb2",
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"{'id': 'einstein1915',\n",
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" 'published_year': '1915',\n",
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" 'title': 'Die Feldgleichungen der Gravitation',\n",
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" 'publication': 'Sitzungsberichte der K{\"o}niglich Preu{\\\\ss}ischen Akademie der Wissenschaften',\n",
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" 'authors': 'Einstein, Albert',\n",
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" 'abstract': 'Die Grundgleichungen der Gravitation, die ich hier entwickeln werde, wurden von mir in einer Abhandlung: ,,Die formale Grundlage der allgemeinen Relativit{\"a}tstheorie`` in den Sitzungsberichten der Preu{\\\\ss}ischen Akademie der Wissenschaften 1915 ver{\"o}ffentlicht.',\n",
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" 'url': 'https://doi.org/10.1002/andp.19163540702'}"
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]
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},
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"execution_count": 30,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"docs[0].metadata"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 31,
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"id": "46969806-45a9-4c4d-a61b-cfb9658fc9de",
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"metadata": {
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"tags": []
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"ON THE ELECTRODYNAMICS OF MOVING\n",
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"BODIES\n",
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"By A. EINSTEIN\n",
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"June 30, 1905\n",
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"It is known that Maxwell’s electrodynamics—as usually understood at the\n",
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"present time—when applied to moving bodies, leads to asymmetries which do\n",
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"not appear to be inherent in the phenomena. Take, for example, the recipro-\n",
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"cal electrodynamic action of a magnet and a conductor. The observable phe-\n",
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"nomenon here depends only on the r\n"
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]
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}
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],
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"source": [
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"print(docs[0].page_content[:400]) # all pages of the pdf content"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.11.3"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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