def help(context):
"""
Show this text.
"""
print(u"usage: %s" % context.caller.get_usage(context))
if self.description:
print()
print(self.description)
if self.options:
print()
print(u"options:")
for option in unique(itervalues(self.options)):
print(u", ".join(option.names))
if option.description:
print(u"".join(u" " * 4 + line for line in option.description.splitlines(True)))
if self.commands:
print()
print(u"commands:")
for name, command in iteritems(self.commands):
print(name)
if command.description:
print(u" " * 4 + command.description.splitlines()[0])
sys.exit(1)
def update_context(self, context):
context.command = self
for key, value in iteritems(self.defaults):
context.setdefault(key, value)
