lazyr 0.0.3

Makes lazy modules in a more readable and friendly way.

lazyr

Creates lazily-imported modules in a more readable and safer way.

A lazily-imported module (or a lazy module, to be short) is not physically loaded in the Python environment until its attributes are being accessed. This could be useful when you are importing some modules that are hardly used but take a lot of time to be loaded.

Installation

pip install lazyr

Usage

Make a lazy module

Make pandas become a lazy module, for example:

import lazyr
lazyr.register("pandas") # pandas is a lazy module from now on

import pandas as pd
print(pd)
# Output: LazyModule(pandas, ignore=set())

df = pd.DataFrame # pandas is activated and actually loaded now
print(df)
# Output: <class 'pandas.core.frame.DataFrame'>

There is a simpler way to create a lazy module, but it may cause type hints to lose efficacy:

pd = lazyr.register("pandas")
print(pd)
# Output: LazyModule(pandas, ignore=set())

Wake up a module

The lazy modules are not physically loaded until their attrubutes are imported or used, but sometimes you may want to activate a lazy module without excessing any of its attributes. For that purpose, you can wake up it like this:

lazyr.wakeup(pd) # pandas is no longer lazy now

See Also

Github repository

• https://github.com/Chitaoji/lazyr/

PyPI project

• https://pypi.org/project/lazyr/

License

This project falls under the BSD 2-Clause License.

History

v0.0.3

• Various improvements.

v0.0.2

• New lazyr.wakeup function, for compulsively activating modules.

v0.0.1

• Initial release.