title: Import data into Google Colaboratory
body: <p>What are the common ways to import private data into Google Colaboratory notebooks? Is it possible to import a non-public Google sheet? You can't read from system files. The introductory docs link to a <a href="https://colab.research.google.com/notebook#fileId=/v2/external/notebooks/bigquery.ipynb&amp;scrollTo=KcAZ2RHCg_Ze" rel="noreferrer">guide on using BigQuery</a>, but that seems a bit... much.</p>