def install_pip(py_executable, search_dirs=None, never_download=False):
if search_dirs is None:
search_dirs = file_search_dirs()
filenames = []
for dir in search_dirs:
filenames.extend([join(dir, fn) for fn in os.listdir(dir)
if _pip_re.search(fn)])
filenames = [(os.path.basename(filename).lower(), i, filename) for i, filename in enumerate(filenames)]
filenames.sort()
filenames = [filename for basename, i, filename in filenames]
if not filenames:
filename = 'pip'
else:
filename = filenames[-1]
easy_install_script = 'easy_install'
if sys.platform == 'win32':
easy_install_script = 'easy_install-script.py'
cmd = [join(os.path.dirname(py_executable), easy_install_script), filename]
if sys.platform == 'win32':
cmd.insert(0, py_executable)
if filename == 'pip':
if never_download:
logger.fatal("Can't find any local distributions of pip to install "
"and --never-download is set. Either re-run virtualenv "
"without the --never-download option, or place a pip "
"source distribution (zip/tar.gz/tar.bz2) in one of these "
"locations: %r" % search_dirs)
sys.exit(1)
logger.info('Installing pip from network...')
else:
logger.info('Installing existing %s distribution: %s' % (
os.path.basename(filename), filename))
logger.start_progress('Installing pip...')
logger.indent += 2
def _filter_setup(line):
return filter_ez_setup(line, 'pip')
try:
call_subprocess(cmd, show_stdout=False,
filter_stdout=_filter_setup)
finally:
logger.indent -= 2
logger.end_progress()
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