高分求教python逐行 分块解释！

bjandroidhal6 2011-09-27 05:19:42
#!/bin/sh
## repo default configuration
##REPO_URL='git://android.git.kernel.org/tools/repo.git'
#REPO_REV='stable'
# Copyright (C) 2008 Google Inc.
## Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
## http://www.apache.org/licenses/LICENSE-2.0
## Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
magic='--calling-python-from-/bin/sh--'
"""exec" python -E "$0" "$@" """#$magic"
if __name__ == '__main__':
import sys
if sys.argv[-1] == '#%s' % magic:
del sys.argv[-1]
del magic

# increment this whenever we make important changes to this script
VERSION = (1, 9)

# increment this if the MAINTAINER_KEYS block is modified
KEYRING_VERSION = (1,0)
MAINTAINER_KEYS = """

Repo Maintainer <repo@android.kernel.org>
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.2.2 (GNU/Linux)
mQGiBEj3ugERBACrLJh/ZPyVSKeClMuznFIrsQ+hpNnmJGw1a9GXKYKk8qHPhAZf
WKtrBqAVMNRLhL85oSlekRz98u41H5si5zcuv+IXJDF5MJYcB8f22wAy15lUqPWi
VCkk1l8qqLiuW0fo+ZkPY5qOgrvc0HW1SmdH649uNwqCbcKb6CxaTxzhOwCgj3AP
.。。。。。。
-----END PGP PUBLIC KEY BLOCK-----
"""
GIT = 'git' # our git command
MIN_GIT_VERSION = (1, 5, 4) # minimum supported git version
repodir = '.repo' # name of repo's private directory
S_repo = 'repo' # special repo reposiory
S_manifests = 'manifests' # special manifest repository
REPO_MAIN = S_repo + '/main.py' # main script

import optparse
import os
import re
import readline
import subprocess
import sys
home_dot_repo = os.path.expanduser('~/.repoconfig')
gpg_dir = os.path.join(home_dot_repo, 'gnupg')

extra_args = []
init_optparse = optparse.OptionParser(usage="repo init -u url [options]")

# Logging
group = init_optparse.add_option_group('Logging options')
group.add_option('-q', '--quiet',
dest="quiet", action="store_true", default=False,
help="be quiet")

# Manifest
group = init_optparse.add_option_group('Manifest options')
group.add_option('-u', '--manifest-url',
dest='manifest_url',
help='manifest repository location', metavar='URL')
group.add_option('-o', '--origin',
dest='manifest_origin',
help="use REMOTE instead of 'origin' to track upstream",
metavar='REMOTE')
group.add_option('-b', '--manifest-branch',
dest='manifest_branch',
help='manifest branch or revision', metavar='REVISION')
group.add_option('-m', '--manifest-name',
dest='manifest_name',
help='initial manifest file (deprecated)',
metavar='NAME.xml')
group.add_option('--mirror',
dest='mirror', action='store_true',
help='mirror the forrest')

# Tool
group = init_optparse.add_option_group('repo Version options')
group.add_option('--repo-url',
dest='repo_url',
help='repo repository location', metavar='URL')
group.add_option('--repo-branch',
dest='repo_branch',
help='repo branch or revision', metavar='REVISION')
group.add_option('--no-repo-verify',
dest='no_repo_verify', action='store_true',
help='do not verify repo source code')

class CloneFailure(Exception):
"""Indicate the remote clone of repo itself failed.
"""
def _Init(args):
"""Installs repo by cloning it over the network.
"""
opt, args = init_optparse.parse_args(args)
if args or not opt.manifest_url:
init_optparse.print_usage()
sys.exit(1)

url = opt.repo_url
if not url:
url = REPO_URL
extra_args.append('--repo-url=%s' % url)

branch = opt.repo_branch
if not branch:
branch = REPO_REV
extra_args.append('--repo-branch=%s' % branch)

if branch.startswith('refs/heads/'):
branch = branch[len('refs/heads/'):]
if branch.startswith('refs/'):
print >>sys.stderr, "fatal: invalid branch name '%s'" % branch
raise CloneFailure()

if not os.path.isdir(repodir):
try:
os.mkdir(repodir)
except OSError, e:
print >>sys.stderr, \
'fatal: cannot make %s directory: %s' % (
repodir, e.strerror)
# Don't faise CloneFailure; that would delete the
# name. Instead exit immediately.
#
sys.exit(1)

_CheckGitVersion()
try:
if _NeedSetupGnuPG():
can_verify = _SetupGnuPG(opt.quiet)
else:
can_verify = True

if not opt.quiet:
print >>sys.stderr, 'Getting repo ...'
print >>sys.stderr, ' from %s' % url

dst = os.path.abspath(os.path.join(repodir, S_repo))
_Clone(url, dst, opt.quiet)

if can_verify and not opt.no_repo_verify:
rev = _Verify(dst, branch, opt.quiet)
else:
rev = 'refs/remotes/origin/%s^0' % branch

_Checkout(dst, branch, rev, opt.quiet)
except CloneFailure:
if opt.quiet:
print >>sys.stderr, \
'fatal: repo init failed; run without --quiet to see why'
raise
def _CheckGitVersion():
cmd = [GIT, '--version']
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)
ver_str = proc.stdout.read().strip()
proc.stdout.close()
proc.wait()

if not ver_str.startswith('git version '):
print >>sys.stderr, 'error: "%s" unsupported' % ver_str
raise CloneFailure()

ver_str = ver_str[len('git version '):].strip()
ver_act = tuple(map(lambda x: int(x), ver_str.split('.')[0:3]))
if ver_act < MIN_GIT_VERSION:
need = '.'.join(map(lambda x: str(x), MIN_GIT_VERSION))
print >>sys.stderr, 'fatal: git %s or later required' % need
raise CloneFailure()

def _NeedSetupGnuPG():
if not os.path.isdir(home_dot_repo):
return True

kv = os.path.join(home_dot_repo, 'keyring-version')
if not os.path.exists(kv):
return True

kv = open(kv).read()
if not kv:
return True

kv = tuple(map(lambda x: int(x), kv.split('.')))
if kv < KEYRING_VERSION:
return True
return False

def _SetupGnuPG(quiet):
if not os.path.isdir(home_dot_repo):
try:
os.mkdir(home_dot_repo)
except OSError, e:
print >>sys.stderr, \
'fatal: cannot make %s directory: %s' % (
home_dot_repo, e.strerror)
sys.exit(1)

if not os.path.isdir(gpg_dir):
try:
os.mkdir(gpg_dir, 0700)
except OSError, e:
print >>sys.stderr, \
'fatal: cannot make %s directory: %s' % (
gpg_dir, e.strerror)
sys.exit(1)

env = dict(os.environ)
env['GNUPGHOME'] = gpg_dir

cmd = ['gpg', '--import']
try:
proc = subprocess.Popen(cmd,
env = env,
stdin = subprocess.PIPE)
except OSError, e:
if not quiet:
print >>sys.stderr, 'warning: gpg (GnuPG) is not available.'
print >>sys.stderr, 'warning: Installing it is strongly encouraged.'
print >>sys.stderr
return False

proc.stdin.write(MAINTAINER_KEYS)
proc.stdin.close()

if proc.wait() != 0:
print >>sys.stderr, 'fatal: registering repo maintainer keys failed'
sys.exit(1)
print
fd = open(os.path.join(home_dot_repo, 'keyring-version'), 'w')
fd.write('.'.join(map(lambda x: str(x), KEYRING_VERSION)) + '\n')
fd.close()
return True
def _SetConfig(local, name, value):
"""Set a git configuration option to the specified value.
"""
cmd = [GIT, 'config', name, value]
if subprocess.Popen(cmd, cwd = local).wait() != 0:
raise CloneFailure()
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babiemz 2011-11-10
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#你妹
云淡风轻2020 2011-11-09
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from pymongo import Connection

db = Connection(host='10.0.1.200',username='root',password='guoku1@#').qinzhoukan



db.report.drop()

now = datetime.datetime.now()

oneday = datetime.timedelta(days=1)
zengna_com 2011-09-28
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代码贴的也太乱了点吧
codesnail 2011-09-28
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我一直想不通的是，为什么csdn有那么多人不知道如何插入代码。。。。。。。。。


#!/bin/sh

## repo default configuration

##REPO_URL='git://android.git.kernel.org/tools/repo.git'

#REPO_REV='stable'

# Copyright (C) 2008 Google Inc.

## Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

## http://www.apache.org/licenses/LICENSE-2.0

## Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

magic='--calling-python-from-/bin/sh--'

"""exec" python -E "$0" "$@" """#$magic"

if __name__ == '__main__':

  import sys

  if sys.argv[-1] == '#%s' % magic:

  del sys.argv[-1]

del magic



# increment this whenever we make important changes to this script

VERSION = (1, 9)



# increment this if the MAINTAINER_KEYS block is modified

KEYRING_VERSION = (1,0)

MAINTAINER_KEYS = """



  Repo Maintainer <repo@android.kernel.org>

-----BEGIN PGP PUBLIC KEY BLOCK-----

Version: GnuPG v1.4.2.2 (GNU/Linux)

mQGiBEj3ugERBACrLJh/ZPyVSKeClMuznFIrsQ+hpNnmJGw1a9GXKYKk8qHPhAZf

WKtrBqAVMNRLhL85oSlekRz98u41H5si5zcuv+IXJDF5MJYcB8f22wAy15lUqPWi

VCkk1l8qqLiuW0fo+ZkPY5qOgrvc0HW1SmdH649uNwqCbcKb6CxaTxzhOwCgj3AP

.。。。。。。

-----END PGP PUBLIC KEY BLOCK-----

"""

GIT = 'git' # our git command

MIN_GIT_VERSION = (1, 5, 4) # minimum supported git version

repodir = '.repo' # name of repo's private directory

S_repo = 'repo' # special repo reposiory

S_manifests = 'manifests' # special manifest repository

REPO_MAIN = S_repo + '/main.py' # main script



import optparse

import os

import re

import readline

import subprocess

import sys

home_dot_repo = os.path.expanduser('~/.repoconfig')

gpg_dir = os.path.join(home_dot_repo, 'gnupg')



extra_args = []

init_optparse = optparse.OptionParser(usage="repo init -u url [options]")



# Logging

group = init_optparse.add_option_group('Logging options')

group.add_option('-q', '--quiet',

  dest="quiet", action="store_true", default=False,

  help="be quiet")



# Manifest

group = init_optparse.add_option_group('Manifest options')

group.add_option('-u', '--manifest-url',

  dest='manifest_url',

  help='manifest repository location', metavar='URL')

group.add_option('-o', '--origin',

  dest='manifest_origin',

  help="use REMOTE instead of 'origin' to track upstream",

  metavar='REMOTE')

group.add_option('-b', '--manifest-branch',

  dest='manifest_branch',

  help='manifest branch or revision', metavar='REVISION')

group.add_option('-m', '--manifest-name',

  dest='manifest_name',

  help='initial manifest file (deprecated)',

  metavar='NAME.xml')

group.add_option('--mirror',

  dest='mirror', action='store_true',

  help='mirror the forrest')



# Tool

group = init_optparse.add_option_group('repo Version options')

group.add_option('--repo-url',

  dest='repo_url',

  help='repo repository location', metavar='URL')

group.add_option('--repo-branch',

  dest='repo_branch',

  help='repo branch or revision', metavar='REVISION')

group.add_option('--no-repo-verify',

  dest='no_repo_verify', action='store_true',

  help='do not verify repo source code')



class CloneFailure(Exception):

  """Indicate the remote clone of repo itself failed.

  """

def _Init(args):

  """Installs repo by cloning it over the network.

  """

  opt, args = init_optparse.parse_args(args)

  if args or not opt.manifest_url:

  init_optparse.print_usage()

  sys.exit(1)



  url = opt.repo_url

  if not url:

  url = REPO_URL

  extra_args.append('--repo-url=%s' % url)



  branch = opt.repo_branch

  if not branch:

  branch = REPO_REV

  extra_args.append('--repo-branch=%s' % branch)



  if branch.startswith('refs/heads/'):

  branch = branch[len('refs/heads/'):]

  if branch.startswith('refs/'):

  print >>sys.stderr, "fatal: invalid branch name '%s'" % branch

  raise CloneFailure()



  if not os.path.isdir(repodir):

  try:

  os.mkdir(repodir)

  except OSError, e:

  print >>sys.stderr, \

  'fatal: cannot make %s directory: %s' % (

  repodir, e.strerror)

  # Don't faise CloneFailure; that would delete the

  # name. Instead exit immediately.

  #

  sys.exit(1)



  _CheckGitVersion()

  try:

  if _NeedSetupGnuPG():

  can_verify = _SetupGnuPG(opt.quiet)

  else:

  can_verify = True



  if not opt.quiet:

  print >>sys.stderr, 'Getting repo ...'

  print >>sys.stderr, ' from %s' % url



  dst = os.path.abspath(os.path.join(repodir, S_repo))

  _Clone(url, dst, opt.quiet)



  if can_verify and not opt.no_repo_verify:

  rev = _Verify(dst, branch, opt.quiet)

  else:

  rev = 'refs/remotes/origin/%s^0' % branch



  _Checkout(dst, branch, rev, opt.quiet)

  except CloneFailure:

  if opt.quiet:

  print >>sys.stderr, \

  'fatal: repo init failed; run without --quiet to see why'

  raise

def _CheckGitVersion():

  cmd = [GIT, '--version']

  proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)

  ver_str = proc.stdout.read().strip()

  proc.stdout.close()

  proc.wait()



  if not ver_str.startswith('git version '):

  print >>sys.stderr, 'error: "%s" unsupported' % ver_str

  raise CloneFailure()



  ver_str = ver_str[len('git version '):].strip()

  ver_act = tuple(map(lambda x: int(x), ver_str.split('.')[0:3]))

  if ver_act < MIN_GIT_VERSION:

  need = '.'.join(map(lambda x: str(x), MIN_GIT_VERSION))

  print >>sys.stderr, 'fatal: git %s or later required' % need

  raise CloneFailure()



def _NeedSetupGnuPG():

  if not os.path.isdir(home_dot_repo):

  return True



  kv = os.path.join(home_dot_repo, 'keyring-version')

  if not os.path.exists(kv):

  return True



  kv = open(kv).read()

  if not kv:

  return True



  kv = tuple(map(lambda x: int(x), kv.split('.')))

  if kv < KEYRING_VERSION:

  return True

  return False



def _SetupGnuPG(quiet):

  if not os.path.isdir(home_dot_repo):

  try:

  os.mkdir(home_dot_repo)

  except OSError, e:

  print >>sys.stderr, \

  'fatal: cannot make %s directory: %s' % (

  home_dot_repo, e.strerror)

  sys.exit(1)



  if not os.path.isdir(gpg_dir):

  try:

  os.mkdir(gpg_dir, 0700)

  except OSError, e:

  print >>sys.stderr, \

  'fatal: cannot make %s directory: %s' % (

  gpg_dir, e.strerror)

  sys.exit(1)



  env = dict(os.environ)

  env['GNUPGHOME'] = gpg_dir



  cmd = ['gpg', '--import']

  try:

  proc = subprocess.Popen(cmd,

  env = env,

  stdin = subprocess.PIPE)

  except OSError, e:

  if not quiet:

  print >>sys.stderr, 'warning: gpg (GnuPG) is not available.'

  print >>sys.stderr, 'warning: Installing it is strongly encouraged.'

  print >>sys.stderr

  return False



  proc.stdin.write(MAINTAINER_KEYS)

  proc.stdin.close()



  if proc.wait() != 0:

  print >>sys.stderr, 'fatal: registering repo maintainer keys failed'

  sys.exit(1)

  print

  fd = open(os.path.join(home_dot_repo, 'keyring-version'), 'w')

  fd.write('.'.join(map(lambda x: str(x), KEYRING_VERSION)) + '\n')

  fd.close()

  return True

def _SetConfig(local, name, value):

  """Set a git configuration option to the specified value.

  """

  cmd = [GIT, 'config', name, value]

  if subprocess.Popen(cmd, cwd = local).wait() != 0:

  raise CloneFailure()
ksf584613181 2011-09-28
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楼上的，同感啊。。。。一只小菜鸟飘过
大道曙光 2011-09-27
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Python菜鸟 路过 啥时候俺也能写出这么长的
iambic 2011-09-27
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别人的时间比你珍贵。如果你只是因为自己没时间而委托别人，需要付费的。
bjandroidhal6 2011-09-27
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太忙了！ 请教先了！ 师兄师弟们 十一快乐
iambic 2011-09-27
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如果你想学习，请自己分析。
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