fromfile

quasiquotes.fromfile is designed to take an existing quasiquoter and return a new quasiquoter that reads its input from a file. For example, let’s write an “identity” quasiquoter that executes the body as python code.

from textwrap import dedent

from quasiquotes import QuasiQuoter
from quasiquotes.utils.instance import instance

@instance
class py(QuasiQuoter):
    def quote_stmt(self, code, frame, col_offset):
        exec(dedent(code), frame.f_globals, frame.f_locals)
        self.locals_to_fast(frame)

    def quote_expr(self, code, frame, col_offset):
        return eval(code, frame.f_globals, frame.f_locals)

We can use this silly quasiquoter as expected:

>>> a = 2
>>> with $py:
...     print(a + 2)
4
>>> print([$py|a + 2|])
4

We can now use this to inline python from another file in our function. For example, let’s imagine that other_file.py looks like:

print(a + 2)

We can then use this in our files like:

>>> inlinepy = fromfile(py)  # remember, we need to bind this before use.
>>> a = 2
>>> with $inlinepy:
...     other_file.py
4
>>> [$inlinepy|other_file.py|] is None
4
True