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d4cc736b7c
* Go back to using requests instead of urllib (closes #2320)
Fewer dependencies are good, but this one was simply causing too many other problems around SSL verification and Python 2/3 compatibility. requests is a popular enough package that it's okay for spaCy to depend on it – and this will hopefully make model downloads less flakey.
* Only download model if not installed (see #1456)
Use #egg=model==version to allow pip to check for existing installations. The download is only started if no installation matching the package/version is found. Fixes a long-standing inconvenience.
* Pass additional options to pip when installing model (resolves #1456)
Treat all additional arguments passed to the download command as pip options to allow user to customise the command. For example:
python -m spacy download en --user
* Add CLI option to enable installing model package dependencies
* Revert "Add CLI option to enable installing model package dependencies"
This reverts commit 9336ffe695.
* Update documentation
87 lines
3.2 KiB
Python
87 lines
3.2 KiB
Python
# coding: utf8
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from __future__ import unicode_literals
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import plac
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import requests
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import os
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import subprocess
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import sys
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from ._messages import Messages
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from .link import link
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from ..util import prints, get_package_path
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from .. import about
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@plac.annotations(
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model=("model to download, shortcut or name)", "positional", None, str),
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direct=("force direct download. Needs model name with version and won't "
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"perform compatibility check", "flag", "d", bool),
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pip_args=("additional arguments to be passed to `pip install` when "
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"installing the model"))
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def download(model, direct=False, *pip_args):
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"""
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Download compatible model from default download path using pip. Model
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can be shortcut, model name or, if --direct flag is set, full model name
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with version.
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"""
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if direct:
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dl = download_model('{m}/{m}.tar.gz#egg={m}'.format(m=model), pip_args)
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else:
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shortcuts = get_json(about.__shortcuts__, "available shortcuts")
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model_name = shortcuts.get(model, model)
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compatibility = get_compatibility()
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version = get_version(model_name, compatibility)
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dl = download_model('{m}-{v}/{m}-{v}.tar.gz#egg={m}=={v}'
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.format(m=model_name, v=version), pip_args)
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if dl != 0: # if download subprocess doesn't return 0, exit
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sys.exit(dl)
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try:
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# Get package path here because link uses
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# pip.get_installed_distributions() to check if model is a
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# package, which fails if model was just installed via
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# subprocess
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package_path = get_package_path(model_name)
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link(model_name, model, force=True, model_path=package_path)
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except:
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# Dirty, but since spacy.download and the auto-linking is
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# mostly a convenience wrapper, it's best to show a success
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# message and loading instructions, even if linking fails.
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prints(Messages.M001.format(name=model_name), title=Messages.M002)
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def get_json(url, desc):
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r = requests.get(url)
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if r.status_code != 200:
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prints(Messages.M004.format(desc=desc, version=about.__version__),
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title=Messages.M003.format(code=r.status_code), exits=1)
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return r.json()
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def get_compatibility():
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version = about.__version__
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version = version.rsplit('.dev', 1)[0]
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comp_table = get_json(about.__compatibility__, "compatibility table")
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comp = comp_table['spacy']
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if version not in comp:
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prints(Messages.M006.format(version=version), title=Messages.M005,
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exits=1)
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return comp[version]
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def get_version(model, comp):
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model = model.rsplit('.dev', 1)[0]
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if model not in comp:
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prints(Messages.M007.format(name=model, version=about.__version__),
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title=Messages.M005, exits=1)
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return comp[model][0]
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def download_model(filename, user_pip_args=None):
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download_url = about.__download_url__ + '/' + filename
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pip_args = ['--no-cache-dir', '--no-deps']
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if user_pip_args:
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pip_args.extend(user_pip_args)
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cmd = [sys.executable, '-m', 'pip', 'install'] + pip_args + [download_url]
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return subprocess.call(cmd, env=os.environ.copy())
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