Usage¶

Create a new custom syntax¶

Create a function that takes the original unicode source string and returns a new unicode source string.

def unicode_lambdas(source: str) -> str:
    """Convert unicode lambdas into regular lambdas."""
    return source.replace("λ", "lambda ")

Install syntactic.
Install a module that provides a custom syntax plugin.
In the module where you want to use the syntax, put the syntactic coding declaration at the top of the file.
```
# coding: syntactic
```
In the module where you want to use the syntax, import the desired syntax.
```
from __syntax__ import unicode_lambdas
```

If the module is in a package, namespace the import as normal. For example:

from syntactic.examples.__syntax__ import unicode_lambdas

Write code using the custom syntax. The full module should look like this:

# coding: syntactic

from __syntax__ import unicode_lambdas

add_one = λx: x+1

print(add_one(1))

Run the module using the python environment where syntactic is installed. The output should be:
```
2
```

View the expanded form of a Python file by using the optional command-line tool.