spaCy/spacy/cli/download.py

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# coding: utf8
from __future__ import unicode_literals
import plac
import requests
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import os
import subprocess
import sys
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from .link import link
from ..util import prints
from .. import about
@plac.annotations(
model=("model to download (shortcut or model name)", "positional", None, str),
direct=("force direct download. Needs model name with version and won't "
"perform compatibility check", "flag", "d", bool)
)
def download(cmd, model, direct=False):
"""
Download compatible model from default download path using pip. Model
can be shortcut, model name or, if --direct flag is set, full model name
with version.
"""
if direct:
download_model('{m}/{m}.tar.gz'.format(m=model))
else:
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shortcuts = get_json(about.__shortcuts__, "available shortcuts")
model_name = shortcuts.get(model, model)
compatibility = get_compatibility()
version = get_version(model_name, compatibility)
download_model('{m}-{v}/{m}-{v}.tar.gz'.format(m=model_name, v=version))
try:
link(None, model_name, model, force=True)
except:
# Dirty, but since spacy.download and the auto-linking is mostly
# a convenience wrapper, it's best to show a success message and
# loading instructions, even if linking fails.
prints("Creating a shortcut link for 'en' didn't work (maybe you "
"don't have admin permissions?), but you can still load "
"the model via its full package name:",
"nlp = spacy.load('%s')" % model_name,
title="Download successful")
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def get_json(url, desc):
r = requests.get(url)
if r.status_code != 200:
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prints("Couldn't fetch %s. Please find a model for your spaCy installation "
"(v%s), and download it manually." % (desc, about.__version__),
about.__docs_models__, title="Server error (%d)" % r.status_code, exits=1)
return r.json()
def get_compatibility():
version = about.__version__
comp_table = get_json(about.__compatibility__, "compatibility table")
comp = comp_table['spacy']
if version not in comp:
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prints("No compatible models found for v%s of spaCy." % version,
title="Compatibility error", exits=1)
return comp[version]
def get_version(model, comp):
if model not in comp:
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version = about.__version__
prints("No compatible model found for '%s' (spaCy v%s)." % (model, version),
title="Compatibility error", exits=1)
return comp[model][0]
def download_model(filename):
download_url = about.__download_url__ + '/' + filename
subprocess.call([sys.executable, '-m',
'pip', 'install', '--no-cache-dir', download_url],
env=os.environ.copy())