Map Reduce for Notebooks
Project description
Papermill is a tool for parameterizing, executing, and analyzing Jupyter Notebooks.
Papermill lets you:
parametrize notebooks
execute and collect metrics across the notebooks
summarize collections of notebooks
This opens up new opportunities for how notebooks can be used. For example:
Perhaps you have a financial report that you wish to run with different values on the first or last day of a month or at the beginning or end of the year, using parameters makes this task easier.
Do you want to run a notebook and depending on its results, choose a particular notebook to run next? You can now programmatically execute a workflow without having to copy and paste from notebook to notebook manually.
Do you have plots and visualizations spread across 10 or more notebooks? Now you can choose which plots to programmatically display a summary collection in a notebook to share with others.
Installation
From the commmand line:
pip install papermillInstalling In-Notebook bindings
Usage
Parametrizing a Notebook
To parametrize your notebook designate a cell with the tag parameters. Papermill looks for the parameters cell and treat those values as defaults for the parameters passed in at execution time. It acheive this by inserting a cell after the tagged cell. If no cell is tagged with parameters a cell will be inserted to the front of the notebook.
Executing a Notebook
The two ways to execute the notebook with parameters are: (1) through the Python API and (2) through the command line interface.
Execute via the Python API
import papermill as pm
pm.execute_notebook(
'path/to/input.ipynb',
'path/to/output.ipynb',
parameters = dict(alpha=0.6, ratio=0.1)
)Execute via CLI
Here’s an example of a local notebook being executed and output to an Amazon S3 account:
$ papermill local/input.ipynb s3://bkt/output.ipynb -p alpha 0.6 -p l1_ratio 0.1Python In-notebook Bindings
Recording Values to the Notebook
Users can save values to the notebook document to be consumed by other notebooks.
Recording values to be saved with the notebook.
"""notebook.ipynb"""
import papermill as pm
pm.record("hello", "world")
pm.record("number", 123)
pm.record("some_list", [1, 3, 5])
pm.record("some_dict", {"a": 1, "b": 2})Users can recover those values as a Pandas dataframe via the read_notebook function.
"""summary.ipynb"""
import papermill as pm
nb = pm.read_notebook('notebook.ipynb')
nb.dataframe
Displaying Plots and Images Saved by Other Notebooks
Display a matplotlib histogram with the key name matplotlib_hist.
"""notebook.ipynb"""
import papermill as pm
from ggplot import mpg
import matplotlib.pyplot as plt
# turn off interactive plotting to avoid double plotting
plt.ioff()
f = plt.figure()
plt.hist('cty', bins=12, data=mpg)
pm.display('matplotlib_hist', f)
Read in that above notebook and display the plot saved at matplotlib_hist.
"""summary.ipynb"""
import papermill as pm
nb = pm.read_notebook('notebook.ipynb')
nb.display_output('matplotlib_hist')Analyzing a Collection of Notebooks
Papermill can read in a directory of notebooks and provides the NotebookCollection interface for operating on them.
"""summary.ipynb"""
import papermill as pm
nbs = pm.read_notebooks('/path/to/results/')
# Show named plot from 'notebook1.ipynb'
# Accepts a key or list of keys to plot in order.
nbs.display_output('train_1.ipynb', 'matplotlib_hist')# Dataframe for all notebooks in collection
nbs.dataframe.head(10)
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