816a7bca58
The __future__ module [1] was used in this context to ensure compatibility between python 2 and python 3. We previously dropped the support of python 2.7 [2] and now we only support python 3 so we don't need to continue to use this module and the imports listed below. Imports commonly used and their related PEPs: - `division` is related to PEP 238 [3] - `print_function` is related to PEP 3105 [4] - `unicode_literals` is related to PEP 3112 [5] - `with_statement` is related to PEP 343 [6] - `absolute_import` is related to PEP 328 [7] [1] https://docs.python.org/3/library/__future__.html [2] https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html [3] https://www.python.org/dev/peps/pep-0238 [4] https://www.python.org/dev/peps/pep-3105 [5] https://www.python.org/dev/peps/pep-3112 [6] https://www.python.org/dev/peps/pep-0343 [7] https://www.python.org/dev/peps/pep-0328 Change-Id: I0adf51fb6a54c323c3d7a26ea62c23184a99933d
148 lines
4.5 KiB
Python
Executable File
148 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Copyright 2010 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Installation script for Trove's development virtualenv
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"""
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import os
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import subprocess
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import sys
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ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
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VENV = os.path.join(ROOT, '.venv')
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PIP_REQUIRES = os.path.join(ROOT, 'requirements.txt')
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TEST_REQUIRES = os.path.join(ROOT, 'test-requirements.txt')
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PY_VERSION = "python%s.%s" % (sys.version_info[0], sys.version_info[1])
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def die(message, *args):
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print(message % args, file=sys.stderr)
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sys.exit(1)
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def check_python_version():
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if sys.version_info < (2, 7):
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die("Need Python Version >= 2.7")
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def run_command(cmd, redirect_output=True, check_exit_code=True):
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"""
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Runs a command in an out-of-process shell, returning the
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output of that command. Working directory is ROOT.
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"""
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if redirect_output:
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stdout = subprocess.PIPE
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else:
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stdout = None
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proc = subprocess.Popen(cmd, cwd=ROOT, stdout=stdout)
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output = proc.communicate()[0]
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if check_exit_code and proc.returncode != 0:
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die('Command "%s" failed.\n%s', ' '.join(cmd), output)
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return output
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HAS_EASY_INSTALL = bool(run_command(['which', 'easy_install'],
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check_exit_code=False).strip())
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HAS_VIRTUALENV = bool(run_command(['which', 'virtualenv'],
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check_exit_code=False).strip())
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def check_dependencies():
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"""Make sure virtualenv is in the path."""
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if not HAS_VIRTUALENV:
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print('not found.')
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# Try installing it via easy_install...
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if HAS_EASY_INSTALL:
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print('Installing virtualenv via easy_install...'),
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if not (run_command(['which', 'easy_install']) and
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run_command(['easy_install', 'virtualenv'])):
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die('ERROR: virtualenv not found.\nTrove development'
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' requires virtualenv, please install it using your'
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' favorite package management tool')
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print('done.')
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print('done.')
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def create_virtualenv(venv=VENV):
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"""Creates the virtual environment and installs PIP only into the
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virtual environment
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"""
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print('Creating venv...'),
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run_command(['virtualenv', '-q', '--no-site-packages', VENV])
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print('done.')
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print('Installing pip in virtualenv...'),
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if not run_command(['tools/with_venv.sh', 'easy_install', 'pip']).strip():
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die("Failed to install pip.")
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print('done.')
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def install_dependencies(venv=VENV):
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print('Installing dependencies with pip (this can take a while)...')
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# Install greenlet by hand - just listing it in the requires file does not
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# get it in stalled in the right order
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run_command(['tools/with_venv.sh', '-E', venv, 'pip', 'install',
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'greenlet'], redirect_output=False)
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for requires in (PIP_REQUIRES, TEST_REQUIRES):
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run_command(['tools/with_venv.sh', '-E', venv, 'pip', 'install', '-r',
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requires], redirect_output=False)
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# Tell the virtual env how to "import trove"
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pthfile = os.path.join(venv, "lib", PY_VERSION, "site-packages",
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"trove.pth")
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f = open(pthfile, 'w')
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f.write("%s\n" % ROOT)
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def print_help():
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help = """
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Trove development environment setup is complete.
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Trove development uses virtualenv to track and manage Python
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dependencies while in development and testing.
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To activate the Trove virtualenv for the extent of your current shell
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session you can run:
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$ . .venv/bin/activate
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Or, if you prefer, you can run commands in the virtualenv on a case by case
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basis by running:
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$ tools/with_venv.sh <your command>
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Also, make test will automatically use the virtualenv.
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"""
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print(help)
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def main(argv):
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check_python_version()
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check_dependencies()
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create_virtualenv()
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install_dependencies()
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print_help()
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if __name__ == '__main__':
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main(sys.argv)
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