pydollar provides an installable import hook to support the dollar sign ($) as valid python syntax.
Project description
About pydollar
pydollar is a Python module which enables a non-native syntax for the dollar sign $ in Python code. It allows you to follow the DRY-principle (don’t repeat yourself) more stricly when writing python code:
Take for example a file called mymodule.py:
def my_func():
hello, world = map(str.capitalize, $)
print(hello, world)
we could then import from it by first intalling an import hook:
>>> import pydollar
>>> pydollar.install_import_hook()
>>> from mymodule import my_func
>>> my_func()
('Hello', 'World')
Motivation
f-strings were a great additon to Python 3.6, the $ syntax follows it in spirit, it simply allows you to write succinct code.
If $ syntax (or more importantly, the functionality it provides) becomes official syntax there would be a real-world benefit to widely used codebases, e.g. SymPy:
https://github.com/sympy/sympy/blob/sympy-1.0/sympy/core/symbol.py#L587
Installation
Simplest way to install pydollar is to use pip:
$ python3 -m pip install --user pydollar
you can skip the --user flag if you have got root permissions.
Examples
See the test files under tests/.
License
The source code is Open Source and is released under the very permissive “simplified (2-clause) BSD license”. See LICENSE for further details.
Contributing
Contributors are welcome to suggest improvements at https://github.com/bjodah/pydollar
Project details
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