Skip to main content

No project description provided

Project description

[![Build Status](](

## About
AST Transformer integrated with py.test.

Useful for debug, refactoring, 'clean asserts' (see [examples/replace_asserts](examples/replace_asserts))

Support options
| Options | Description |
| ----------- | ----------- |
| `--show-code` | show generated code |
| `--disable-transforms` | disable all ast transformers |

## Install
pip install pytest-ast-transformer

## Usage

* Write ast transformer
import ast

from pytest_ast_transformer.ast_transformer import PytestTransformer

def my_assert(test_result, msg=''):
print(f'my assert: {test_result} {msg}')
assert test_result, msg

class AssertTransformer(PytestTransformer):
context = {
'my_assert': my_assert

def visit_Assert(self, node: ast.Assert) -> ast.Expr:
func_name = ast.Name(id='my_assert', ctx=ast.Load())
call_func = ast.Call(func=func_name, args=[node.test, node.msg], keywords=[])
expr = ast.Expr(value=call_func)

return ast.fix_missing_locations(expr)
* Register new ast transformer
from pytest_ast_transformer.ast_manager import ASTManager
from tests.transformer import AssertTransformer

def pytest_register_ast_transformer(ast_manager: ASTManager):

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for pytest-ast-transformer, version 1.0.3
Filename, size File type Python version Upload date Hashes
Filename, size pytest_ast_transformer-1.0.3-py2.py3-none-any.whl (11.5 kB) File type Wheel Python version py2.py3 Upload date Hashes View hashes
Filename, size pytest-ast-transformer-1.0.3.tar.gz (6.3 kB) File type Source Python version None Upload date Hashes View hashes

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page