preppy

library5.2.1pypypi✓ verified 87d ago

preppy is a Python preprocessor for generating text output from templates. It compiles template files into Python modules for fast execution. Current version 5.1.0, maintained by ReportLab, with irregular release cadence.

serialization web-framework

pip install preppy

package ↗homepage ↗

INSTALL

IMPORT

SIG · PREPPY

preppy

serializationpythonv5.2.1

Install

1.7s avg

Import

151ms

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v5.2.1 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.156s · 17.9MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.7s · import 0.146s · 18MB

16MB installed

● package 16MB

Code

Verified usage

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

preppy

✓ import preppy

✗ from preppy import preppy

preppy is a module; the correct import is just 'import preppy'.

getModule

✓ preppy.getModule('template.prep')

✗ preppy.getModule(name='template')

getModule takes a filename string, not keyword arguments.

Compile and run a template file named 'template.prep' with a variable 'name'.

import preppy template = preppy.getModule('template.prep', source_extension='.prep') result = template.getOutput({'name': 'World'}) print(result)

Debug

Known issues

breakingVersion 3.x dropped Python 2 support. Templates compiled with older versions may not be compatible.

fix

Recompile templates with preppy 5.x.

affects: <4.0.0

breakingIn version 5.x, the module caching behavior changed: getModule now caches compiled modules by default. Use noCaching parameter to disable.

fix

Add noCaching=True if you need fresh compilation each time.

affects: >=5.0.0

gotchaTemplate files must have a .prep extension by default, or specify source_extension in getModule.

fix

Use preppy.getModule('file.prep') or preppy.getModule('file', source_extension='.prep').

affects: all

gotchagetOutput does not accept keyword arguments for variables; pass a dictionary as first argument.

fix

Use template.getOutput({'var': value}) instead of template.getOutput(var=value).

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'preppy'

preppy is not installed.

fix

Run 'pip install preppy'.

AttributeError: module 'preppy' has no attribute 'getModule'

Wrong import (e.g., 'from preppy import preppy').

fix

Use 'import preppy' and call preppy.getModule().

preppy.PreppyError: Could not find template file

Filename or path is incorrect, or extension missing.

fix

Ensure filename includes .prep extension or use source_extension parameter.

Upgrade

Version history

5.2.1latest on PyPI · released May 8, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

12 hits · last 30 days

node

Resources

packagehttps://pypi.org/project/preppy/ ↗

homepagehttps://hg.reportlab.com/hg-public/preppy ↗