Read & write entry_points.txt files
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_
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_
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_
entry-points-txt
provides functions for reading & writing
entry_points.txt
files according to the spec
_. That is the one thing it
does, and it endeavors to do it well.
.. _the spec: https://packaging.python.org/specifications/entry-points/
entry-points-txt
requires Python 3.6 or higher. Just use pip <https://pip.pypa.io>
_ for Python 3 (You have pip, right?) to install
entry-points-txt
::
python3 -m pip install entry-points-txt
EntryPoint
.. code:: python
class EntryPoint(NamedTuple)
A representation of an entry point as a namedtuple. Instances have the following attributes and methods:
group: str
The name of the entry point group (e.g., "console_scripts"
)
name: str
The name of the entry point
module: str
The module portion of the attribute reference (the part before the colon)
attr: Optional[str]
The attribute/object portion of the attribute reference (the part after the
colon), or None
if not specified
extras: Tuple[str, ...]
Extras required for the entry point
load() -> Any
Returns the object referred to by the entry point
to_line() -> str
Returns the representation of the entry point as a line in
entry_points.txt
, i.e., a line of the form name = module:attr [extras]
EntryPointSet
.. code:: python
EntryPointSet = Dict[str, Dict[str, EntryPoint]]
An alias for the return type of load()
& loads()
and the argument type
of dump()
& dumps()
. Entry points are organized into a dict
that
maps group names to sub-dict
\s that map entry point names to EntryPoint
instances.
load()
.. code:: python
entry_points_txt.load(fp: IO[str]) -> EntryPointSet
Parse a file-like object as an entry_points.txt
-format file and return the
results.
For example, the following input:
.. code:: ini
[console_scripts]
foo = package.__main__:main
bar = package.cli:klass.attr
[thingy.extension]
quux = package.thingy [xtr]
would be parsed as:
.. code:: python
{
"console_scripts": {
"foo": EntryPoint(group="console_scripts", name="foo", module="package.__main__", attr="main", extras=()),
"bar": EntryPoint(group="console_scripts", name="bar", module="package.cli", attr="klass.attr", extras=()),
},
"thingy.extension": {
"quux": EntryPoint(group="thingy.extension", name="quux", module="package.thingy", attr=None, extras=("xtr",)),
},
}
loads()
.. code:: python
entry_points_txt.loads(s: str) -> EntryPointSet
Like load()
, but reads from a string instead of a filehandle
dump()
.. code:: python
entry_points_txt.dump(eps: EntryPointSet, fp: IO[str]) -> None
Write a collection of entry points to a file-like object in
entry_points.txt
format. A ValueError
is raised and nothing is written
if the group or name key under which an EntryPoint
is located does not
match its group
or name
attribute.
dumps()
.. code:: python
entry_points_txt.dumps(eps: EntryPointSet) -> str
Like dump()
, but returns a string instead of writing to a filehandle
dump_list()
.. code:: python
entry_points_txt.dump_list(eps: Iterable[EntryPoint], fp: IO[str]) -> None
Write an iterable of entry points to a file-like object in entry_points.txt
format. If two or more entry points have the same group & name, only the last
one will be output.
dumps_list()
.. code:: python
entry_points_txt.dumps_list(eps: Iterable[EntryPoint]) -> str
Like dump_list()
, but returns a string instead of writing to a filehandle
ParseError
.. code:: python
class ParseError(ValueError)
Exception raised by load()
or loads()
when given invalid input