zpimp 0.1.2

Library for importing and executing Python Code from Apache Zeppelin notes inside other notes

ZPimp: Zeppelin Python Notebook Importer

A simple Python library to import and execute Python code from one Apache Zeppelin notebook into another.

The Problem

Apache Zeppelin notebooks often require shared configurations, constants, or utility functions across multiple notes. Copy-pasting code between them leads to duplication, potential errors, and maintenance headaches. ZPimp addresses this by allowing you to define common Python code in a central "library" notebook and easily import and execute it in other notebooks, promoting DRY (Don't Repeat Yourself) principles within your Zeppelin environment.

Features

• utility functions acroImport notebooks using a simple path prefix (e.g., Utils/config) without needing the full filename including the Zeppelin-generated ID. *o another.

The ProblemThe library automatically finds the correct

A simplefile in the target directory based on the provided prefix. *library to import and exeIf multiple notebooks match the prefix, it raises ae Python libralisting the conflicting files and guiding the user to provide a more specific path (including the ID). *om one Apache Zeppelin noteRaisesp: Zeppelin Python Noif the target directory or notebook cannot be located. *hon library to import and exeAutomatically finds and extracts code only from paragraphs identified as Python (e.g., starting withe from one # ZPimp: Zeppelin %flink.pyflink). *hon Notebook Importer

A simple PytExecutes the imported code within theorter

A simpscope of the calling notebook's paragraph, making functions and variables immediately available.

Installation

pip install zpimp

Usage

Imagine you have a shared notebook located at /notebook/Libraries/main_config_ABC123XYZ.zpln (where /notebook is Zeppelin's base notebook directory). Inside this notebook, you have a Python paragraph (%python):

# Content of a %python paragraph in Libraries/main_config_ABC123XYZ.zpln
print("Executing shared config code...")

MY_CONFIG_VALUE = "some_secret_value"
DEFAULT_TIMEOUT = 60

def common_utility_function(x):
  """A simple shared utility function."""
  return x * x

print("Shared config loaded.")
Now, in another notebook where you want to use this configuration or function:

%python
# In your main Zeppelin notebook where you want to use the shared code

# Import the core function from the library
from zpimp import import_note

# Specify the path prefix to the notebook RELATIVE to Zeppelin's base notebook directory
# e.g., If the target is /notebook/Libraries/main_config_ABC123XYZ.zpln
# and the base dir is /notebook, the prefix is "Libraries/main_config"
notebook_prefix = "Libraries/main_config"

# Specify the absolute base directory where Zeppelin stores notebooks
# (Important: Ensure this path is correct for your setup!)
zeppelin_notebook_base_dir = "/notebook" # Or "/zeppelin/notebook", "/opt/zeppelin/notebook", etc.

print(f"Attempting to import notebook: '{notebook_prefix}'")

# Execute the import
# Pass the prefix and the base directory
import_successful = import_note(
    notebook_path_prefix=notebook_prefix,
    base_dir=zeppelin_notebook_base_dir
)

if import_successful:
    print("Import successful!")
    # Now, variables and functions from 'main_config' are available directly
    try:
        print(f"Config value: {MY_CONFIG_VALUE}")
        print(f"Default timeout: {DEFAULT_TIMEOUT}")
        result = common_utility_function(5)
        print(f"Utility function result: {result}")
    except NameError as e:
        print(f"Error accessing imported variable/function: {e}")
else:
    print("Import failed. Check logs above for details.")

Function Arguments

The import_note function takes the following arguments: • notebook_path_prefix (str): Required. The path to the target notebook, relative to base_dir, without the _NOTEBOOKID.zpln suffix. Example: "MyFolder/SubFolder/MyNotebook". • base_dir (str): Required. The absolute path to the root directory where Apache Zeppelin stores its notebook folders. Example: "/path/to/zeppelin/notebook". Ensure this path is correct for your installation! Error Handling • FileNotFoundError: Raised if the base_dir or a subdirectory specified in the notebook_path_prefix does not exist, or if no .zpln file matching the prefix is found. • ValueError: Raised if multiple .zpln files matching the prefix are found in the target directory. The error message lists the conflicting files and advises using a more specific path including the notebook ID (which can usually be found in the notebook's URL). • Other standard exceptions (JSONDecodeError, OSError, Exception) might occur during file reading, JSON parsing, or execution of the imported code.

How it Works

1 import_note determines the target directory based on base_dir and notebook_path_prefix. 2 It scans this directory for .zpln files where the name part before the last underscore (_) matches the final component of the notebook_path_prefix. 3 It verifies if zero, one, or multiple matches are found. 4 If exactly one match is found, the .zpln file (which contains JSON) is read. 5 The JSON content is parsed to extract text from paragraphs identified as Python code (checking for known markers like %python). 6 The extracted Python code blocks are concatenated into a single string. 7 This combined code string is executed using exec(code, globals()), making the definitions available in the calling paragraph's global scope

License: Apache 2.0