old_contents: import sys
  
  from invoke import task, run
  
  
  @task
  def install(upgrade=False, pip_cache=None, wheel_repo=None):
      cmd = 'pip install -r dev-requirements.txt'
  
      if upgrade:
          cmd += ' --upgrade'
      if pip_cache:
          cmd += ' --download-cache={}'.format(pip_cache)
  
      if wheel_repo:
          run('pip install wheel', pty=True)
          # current python version, expected git branch name
          ver = '.'.join([str(i) for i in sys.version_info[0:2]])
          folder = 'wheelhouse-{}'.format(ver)
          name = 'wheelhouse-{}.zip'.format(ver)
          url = '{}/archive/{}.zip'.format(wheel_repo, ver)
          # download and extract the wheelhouse github repository archive
          run('curl -o {} -L {}'.format(name, url), pty=True)
          run('unzip {}'.format(name), pty=True)
          # run pip install w/ the wheelhouse folder specified
          run('{} --use-wheel --find-links={}'.format(cmd, folder), pty=True)
          # cleanup wheelhouse folder and archive file
          run('rm -rf {}'.format(folder), pty=True)
          run('rm -f {}'.format(name), pty=True)
      else:
          run(cmd, pty=True)
  
  
  @task
  def flake():
      run('flake8 .')
  
  
  @task
  def test(verbose=False):
      cmd = 'py.test --cov-report term-missing --cov waterbutler tests'
      if verbose:
          cmd += ' -v'
      run(cmd, pty=True)
  
  
new_contents: import sys
  
  from invoke import task, run
  
  
  @task
  def install(upgrade=False, pip_cache=None, wheel_repo=None):
      cmd = 'pip install -r dev-requirements.txt'
  
      if upgrade:
          cmd += ' --upgrade'
      if pip_cache:
          cmd += ' --download-cache={}'.format(pip_cache)
  
      if wheel_repo:
          run('pip install wheel', pty=True)
          # current python version, expected git branch name
          ver = '.'.join([str(i) for i in sys.version_info[0:2]])
          folder = 'wheelhouse-{}'.format(ver)
          name = 'wheelhouse-{}.zip'.format(ver)
          url = '{}/archive/{}.zip'.format(wheel_repo, ver)
          # download and extract the wheelhouse github repository archive
          run('curl -o {} -L {}'.format(name, url), pty=True)
          run('unzip {}'.format(name), pty=True)
          # run pip install w/ the wheelhouse folder specified
          run('{} --use-wheel --find-links={}'.format(cmd, folder), pty=True)
          # cleanup wheelhouse folder and archive file
          run('rm -rf {}'.format(folder), pty=True)
          run('rm -f {}'.format(name), pty=True)
      else:
          run(cmd, pty=True)
  
  
  @task
  def flake():
      run('flake8 .')
  
  
  @task
  def test(verbose=False):
      cmd = 'py.test --cov-report term-missing --cov waterbutler tests'
      if verbose:
          cmd += ' -v'
      run(cmd, pty=True)
  
subject: Update tasks.py