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examples: Convert to ArgumentParser

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Replace getopt() and hand-rolled-parser with argparse.ArgumentParser.

Fix wrong header comments copy-pasted from domstart.py

Signed-off-by: Philipp Hahn <hahn@univention.de>
This commit is contained in:
Philipp Hahn
2020-07-28 07:05:19 +02:00
committed by Philipp Hahn
parent 9cf539a2a8
commit 06aba185a8
12 changed files with 142 additions and 235 deletions
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20
examples/domstart.py
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@ -1,11 +1,15 @@
#!/usr/bin/env python3
# domstart - make sure a given domU is running, if not start it
"""
Check that the domain described by DOMAIN.XML is running.
If the domain is not running, create it.
"""
import libvirt
import sys
import os
import libxml2
import pdb
from argparse import ArgumentParser
from typing import Tuple
# Parse the XML description of domU from FNAME
@ -20,18 +24,12 @@ def read_domain(fname: str) -> Tuple[str, str]:
name = doc.xpathNewContext().xpathEval("/domain/name")[0].content
return (name, xmldesc)
def usage() -> None:
print('Usage: %s domain.xml' % sys.argv[0])
print(' Check that the domain described by DOMAIN.XML is running')
print(' If the domain is not running, create it')
print(' DOMAIN.XML must be a XML description of the domain')
print(' in libvirt\'s XML format')
if len(sys.argv) != 2:
usage()
sys.exit(2)
parser = ArgumentParser(description=__doc__)
parser.add_argument("file", metavar="DOMAIN.XML", help="XML configuration of the domain in libvirt's XML format")
args = parser.parse_args()
(name, xmldesc) = read_domain(sys.argv[1])
(name, xmldesc) = read_domain(args.file)
try:
conn = libvirt.open(None)