Easy-to-use PEP 508 markers
Project description
highlighter
Easy to use PEP 508 markers. These are the strings in requirements after a
semicolon, such as enum34; python_version < '3.5'
means the package enum34
but only on some versions of python.
from packaging.markers import Marker
from packaging.requirements import Requirement
from highlighter import EnvironmentMarkers
req = Requirement("enum34; python_version < '3.5'")
env = EnvironmentMarkers.for_python("3.7.5", "win32")
env.match(req.marker) # False
# Lower-level interface, you can use Marker directly
m = Marker("python_version < '3.5'")
env.match(m) # False
# What about extras?
req = Requirement("somepackage[foo,bar]")
m = Marker("extra == 'foo'")
env.match(m, extras=req.extras) # True
Egg-info Extras
This also includes a function that can convert a requires.txt (as found in egg-info dirs, the only kind we have in sdists) into an equivalent list of requirements.txt lines using PEP 508 markers.
from highlighter.sdist import convert_sdist_requires
convert_sdist_requires("""\
[socks]
PySocks!=1.5.7,>=1.5.6
[socks:sys_platform == "win32" and python_version == "2.7"]
win_inet_pton
""") == """\
PySocks!=1.5.7,>=1.5.6; extra == 'socks'
win_inet_pton; (sys_platform == "win32" and python_version == "2.7") and extra == 'socks'
"""
License
highlighter is copyright Tim Hatch, and licensed under
the MIT license. I am providing code in this repository to you under an open
source license. This is my personal repository; the license you receive to
my code is from me and not from my employer. See the LICENSE
file for details.
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
Built Distribution
Hashes for highlighter-0.2.0-py3-none-any.whl
Algorithm | Hash digest | |
---|---|---|
SHA256 | 08206ab8c0e0b6c8f77e9184df743bc7189a22e7ea062cc084d5f05a139d6a7f |
|
MD5 | 13d4d9596136454c3223873b7f5d3c10 |
|
BLAKE2b-256 | b14898b0951b8250bf82c73859299fddf2f94c4f0faced1eef583caea64a16c2 |