ethpm-types

library0.6.31pypypi✓ verified 83d ago

Implementation of EIP-2678 (Ethereum Package Manager types) for building, validating, and consuming Ethereum smart contract packages. Current version 0.6.31, weekly releases on PyPI. Requires Python >=3.10, <4.

devops blockchain

pip install ethpm-types

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INSTALL

IMPORT

SIG · ETHPM-TYPES

ethpm-types

devopspythonv0.6.31

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

PackageMeta

✓ from ethpm_types import PackageMeta

standard import path

PNGSource

✓ from ethpm_types.source import PNGSource

import from submodule

Basic usage: load a package manifest JSON and create a validated PackageMeta object.

from ethpm_types import PackageMeta import json # Load a package manifest from a JSON file with open('package.json', 'r') as f: manifest_data = json.load(f) # Create a PackageMeta object (validation happens automatically) pkg = PackageMeta(**manifest_data) print(pkg.name, pkg.version)

Debug

Known issues

breakingv0.6.x dropped support for Python 3.8 and 3.9. If you are still using these versions, pin to ethpm-types<0.6.

fix

Upgrade to Python >=3.10 or use ethpm-types==0.5.x.

affects: >=0.6.0

deprecatedSome source types (e.g., `PNGSource`) were deprecated in v0.6 and may be removed in future releases. Check the migration guide.

fix

Use `from ethpm_types.source import PNGSource` instead of `from ethpm_types.package import PNGSource`.

affects: >=0.6.0

gotchaWhen loading from a JSON string, ensure the data is a dictionary, not a string. `PackageMeta` does not accept a JSON string directly.

fix

Always parse JSON string with `json.loads()` first before passing to `PackageMeta`.

affects: *

Errors

Common errors & fixes

TypeError: PackageMeta() argument after ** must be a mapping, not str

Passing a raw JSON string instead of a dictionary to PackageMeta.

fix

Use `json.loads(json_string)` to convert the string to a dict first.

ImportError: cannot import name 'PNGSource' from 'ethpm_types'

Importing deprecated submodule path.

fix

Use `from ethpm_types.source import PNGSource`.

PydanticValidationError: ... extra fields not permitted ...

The manifest JSON contains unexpected fields not defined in the model.

fix

Validate your manifest against EIP-2678 schema and remove extra fields.

Upgrade

Version history

0.6.31latest on PyPI · released May 29, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/ApeWorX/ethpm-types ↗

homepagehttps://github.com/ApeWorX/ethpm-types ↗