def constraints():
return Option(
'-c', '--constraint',
dest='constraints',
action='append',
default=[],
metavar='file',
help='Constrain versions using the given constraints file. '
'This option can be used multiple times.'
)
python类Option()的实例源码
def editable():
return Option(
'-e', '--editable',
dest='editables',
action='append',
default=[],
metavar='path/url',
help=('Install a project in editable mode (i.e. setuptools '
'"develop mode") from a local project path or a VCS url.'),
)
def no_binary():
return Option(
"--no-binary", dest="format_control", action="callback",
callback=_handle_no_binary, type="str",
default=FormatControl(set(), set()),
help="Do not use binary packages. Can be supplied multiple times, and "
"each time adds to the existing value. Accepts either :all: to "
"disable all binary packages, :none: to empty the set, or one or "
"more package names with commas between them. Note that some "
"packages are tricky to compile and may fail to install when "
"this option is used on them.",
)
def only_binary():
return Option(
"--only-binary", dest="format_control", action="callback",
callback=_handle_only_binary, type="str",
default=FormatControl(set(), set()),
help="Do not use source packages. Can be supplied multiple times, and "
"each time adds to the existing value. Accepts either :all: to "
"disable all source packages, :none: to empty the set, or one or "
"more package names with commas between them. Packages without "
"binary distributions will fail to install when this option is "
"used on them.",
)
def main(args):
op = optparse.OptionParser(usage='usage: %prog PDF_FILE', option_list=[
optparse.Option('--paper', dest='paper', default='a4paper',
help='physical size of the paper to print on'),
optparse.Option('-p', '--pages', dest='pages', default='-', # all pages
help='pages specification, inclusive, ex:1-3,17'),
optparse.Option('-n', '--nup', dest='nup', default='1x2',
help='number of pages to put on a sheet, ex:1x2 or 2x2'),
optparse.Option('--portrait',
action='store_false', dest='landscape',
default=True,
help='print in portrait mode'),
optparse.Option('--open-left',
action='store_false', dest='open_right',
default=True,
help='insert blank page at start'),
optparse.Option('--debug',
action='store', dest='debug',
default=0, type=int,
help='enable debugging'),
])
(options, args) = op.parse_args(args)
if len(args) != 1:
op.print_help()
sys.exit(1)
filename = args[0]
# 'b5' -> 'b5paper'
if not options.paper.endswith('paper'):
options.paper = options.paper.lower() + 'paper'
do_pdf_pages(filename, options)
def exists_action():
return Option(
# Option when path already exist
'--exists-action',
dest='exists_action',
type='choice',
choices=['s', 'i', 'w', 'b'],
default=[],
action='append',
metavar='action',
help="Default action when a path already exists: "
"(s)witch, (i)gnore, (w)ipe, (b)ackup.")
def extra_index_url():
return Option(
'--extra-index-url',
dest='extra_index_urls',
metavar='URL',
action='append',
default=[],
help='Extra URLs of package indexes to use in addition to --index-url.'
)
def find_links():
return Option(
'-f', '--find-links',
dest='find_links',
action='append',
default=[],
metavar='url',
help="If a url or path to an html file, then parse for links to "
"archives. If a local path or file:// url that's a directory, "
"then look for archives in the directory listing.")
def allow_external():
return Option(
"--allow-external",
dest="allow_external",
action="append",
default=[],
metavar="PACKAGE",
help=SUPPRESS_HELP,
)
def trusted_host():
return Option(
"--trusted-host",
dest="trusted_hosts",
action="append",
metavar="HOSTNAME",
default=[],
help="Mark this host as trusted, even though it does not have valid "
"or any HTTPS.",
)
# Remove after 7.0
def constraints():
return Option(
'-c', '--constraint',
dest='constraints',
action='append',
default=[],
metavar='file',
help='Constrain versions using the given constraints file. '
'This option can be used multiple times.')
def requirements():
return Option(
'-r', '--requirement',
dest='requirements',
action='append',
default=[],
metavar='file',
help='Install from the given requirements file. '
'This option can be used multiple times.')
def editable():
return Option(
'-e', '--editable',
dest='editables',
action='append',
default=[],
metavar='path/url',
help=('Install a project in editable mode (i.e. setuptools '
'"develop mode") from a local project path or a VCS url.'),
)
def no_binary():
return Option(
"--no-binary", dest="format_control", action="callback",
callback=_handle_no_binary, type="str",
default=FormatControl(set(), set()),
help="Do not use binary packages. Can be supplied multiple times, and "
"each time adds to the existing value. Accepts either :all: to "
"disable all binary packages, :none: to empty the set, or one or "
"more package names with commas between them. Note that some "
"packages are tricky to compile and may fail to install when "
"this option is used on them.")
def only_binary():
return Option(
"--only-binary", dest="format_control", action="callback",
callback=_handle_only_binary, type="str",
default=FormatControl(set(), set()),
help="Do not use source packages. Can be supplied multiple times, and "
"each time adds to the existing value. Accepts either :all: to "
"disable all source packages, :none: to empty the set, or one or "
"more package names with commas between them. Packages without "
"binary distributions will fail to install when this option is "
"used on them.")
def exists_action():
return Option(
# Option when path already exist
'--exists-action',
dest='exists_action',
type='choice',
choices=['s', 'i', 'w', 'b'],
default=[],
action='append',
metavar='action',
help="Default action when a path already exists: "
"(s)witch, (i)gnore, (w)ipe, (b)ackup.")
def extra_index_url():
return Option(
'--extra-index-url',
dest='extra_index_urls',
metavar='URL',
action='append',
default=[],
help='Extra URLs of package indexes to use in addition to --index-url.'
)
def find_links():
return Option(
'-f', '--find-links',
dest='find_links',
action='append',
default=[],
metavar='url',
help="If a url or path to an html file, then parse for links to "
"archives. If a local path or file:// url that's a directory, "
"then look for archives in the directory listing.")
def allow_external():
return Option(
"--allow-external",
dest="allow_external",
action="append",
default=[],
metavar="PACKAGE",
help=SUPPRESS_HELP,
)
def trusted_host():
return Option(
"--trusted-host",
dest="trusted_hosts",
action="append",
metavar="HOSTNAME",
default=[],
help="Mark this host as trusted, even though it does not have valid "
"or any HTTPS.",
)
# Remove after 7.0
