我对Python很新，我正在尝试为文本编辑器编写插件。
我想知道是否有办法从python代码启动默认系统电子邮件客户端。
答案 0 :(得分：8)
使用pywin32：
import win32api
win32api.ShellExecute(0,'open','mailto:',None,None ,0)
<强>更新
啊，我误解了你的问题，并假设你在Win平台上。
独立于平台的解决方案是在浏览器中打开mailto链接，例如
import webbrowser
webbrowser.open('mailto:', new=1)
更新2
其他一些研究（事实上，谷歌搜索的前两页）显示this excellent snippet：
#!/usr/bin/env python
'''Utilities for opening files or URLs in the registered default application
and for sending e-mail using the user's preferred composer.
'''
__version__ = '1.1'
__all__ = ['open', 'mailto']
import os
import sys
import webbrowser
import subprocess
from email.Utils import encode_rfc2231
_controllers = {}
_open = None
class BaseController(object):
'''Base class for open program controllers.'''
def __init__(self, name):
self.name = name
def open(self, filename):
raise NotImplementedError
class Controller(BaseController):
'''Controller for a generic open program.'''
def __init__(self, *args):
super(Controller, self).__init__(os.path.basename(args[0]))
self.args = list(args)
def _invoke(self, cmdline):
if sys.platform[:3] == 'win':
closefds = False
startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
else:
closefds = True
startupinfo = None
if (os.environ.get('DISPLAY') or sys.platform[:3] == 'win' or
sys.platform == 'darwin'):
inout = file(os.devnull, 'r+')
else:
# for TTY programs, we need stdin/out
inout = None
# if possible, put the child precess in separate process group,
# so keyboard interrupts don't affect child precess as well as
# Python
setsid = getattr(os, 'setsid', None)
if not setsid:
setsid = getattr(os, 'setpgrp', None)
pipe = subprocess.Popen(cmdline, stdin=inout, stdout=inout,
stderr=inout, close_fds=closefds,
preexec_fn=setsid, startupinfo=startupinfo)
# It is assumed that this kind of tools (gnome-open, kfmclient,
# exo-open, xdg-open and open for OSX) immediately exit after lauching
# the specific application
returncode = pipe.wait()
if hasattr(self, 'fixreturncode'):
returncode = self.fixreturncode(returncode)
return not returncode
def open(self, filename):
if isinstance(filename, basestring):
cmdline = self.args + [filename]
else:
# assume it is a sequence
cmdline = self.args + filename
try:
return self._invoke(cmdline)
except OSError:
return False
# Platform support for Windows
if sys.platform[:3] == 'win':
class Start(BaseController):
'''Controller for the win32 start progam through os.startfile.'''
def open(self, filename):
try:
os.startfile(filename)
except WindowsError:
# [Error 22] No application is associated with the specified
# file for this operation: '<URL>'
return False
else:
return True
_controllers['windows-default'] = Start('start')
_open = _controllers['windows-default'].open
# Platform support for MacOS
elif sys.platform == 'darwin':
_controllers['open']= Controller('open')
_open = _controllers['open'].open
# Platform support for Unix
else:
import commands
# @WARNING: use the private API of the webbrowser module
from webbrowser import _iscommand
class KfmClient(Controller):
'''Controller for the KDE kfmclient program.'''
def __init__(self, kfmclient='kfmclient'):
super(KfmClient, self).__init__(kfmclient, 'exec')
self.kde_version = self.detect_kde_version()
def detect_kde_version(self):
kde_version = None
try:
info = commands.getoutput('kde-config --version')
for line in info.splitlines():
if line.startswith('KDE'):
kde_version = line.split(':')[-1].strip()
break
except (OSError, RuntimeError):
pass
return kde_version
def fixreturncode(self, returncode):
if returncode is not None and self.kde_version > '3.5.4':
return returncode
else:
return os.EX_OK
def detect_desktop_environment():
'''Checks for known desktop environments
Return the desktop environments name, lowercase (kde, gnome, xfce)
or "generic"
'''
desktop_environment = 'generic'
if os.environ.get('KDE_FULL_SESSION') == 'true':
desktop_environment = 'kde'
elif os.environ.get('GNOME_DESKTOP_SESSION_ID'):
desktop_environment = 'gnome'
else:
try:
info = commands.getoutput('xprop -root _DT_SAVE_MODE')
if ' = "xfce4"' in info:
desktop_environment = 'xfce'
except (OSError, RuntimeError):
pass
return desktop_environment
def register_X_controllers():
if _iscommand('kfmclient'):
_controllers['kde-open'] = KfmClient()
for command in ('gnome-open', 'exo-open', 'xdg-open'):
if _iscommand(command):
_controllers[command] = Controller(command)
def get():
controllers_map = {
'gnome': 'gnome-open',
'kde': 'kde-open',
'xfce': 'exo-open',
}
desktop_environment = detect_desktop_environment()
try:
controller_name = controllers_map[desktop_environment]
return _controllers[controller_name].open
except KeyError:
if _controllers.has_key('xdg-open'):
return _controllers['xdg-open'].open
else:
return webbrowser.open
if os.environ.get("DISPLAY"):
register_X_controllers()
_open = get()
def open(filename):
'''Open a file or an URL in the registered default application.'''
return _open(filename)
def _fix_addersses(**kwargs):
for headername in ('address', 'to', 'cc', 'bcc'):
try:
headervalue = kwargs[headername]
if not headervalue:
del kwargs[headername]
continue
elif not isinstance(headervalue, basestring):
# assume it is a sequence
headervalue = ','.join(headervalue)
except KeyError:
pass
except TypeError:
raise TypeError('string or sequence expected for "%s", '
'%s found' % (headername,
type(headervalue).__name__))
else:
translation_map = {'%': '%25', '&': '%26', '?': '%3F'}
for char, replacement in translation_map.items():
headervalue = headervalue.replace(char, replacement)
kwargs[headername] = headervalue
return kwargs
def mailto_format(**kwargs):
# @TODO: implement utf8 option
kwargs = _fix_addersses(**kwargs)
parts = []
for headername in ('to', 'cc', 'bcc', 'subject', 'body', 'attach'):
if kwargs.has_key(headername):
headervalue = kwargs[headername]
if not headervalue:
continue
if headername in ('address', 'to', 'cc', 'bcc'):
parts.append('%s=%s' % (headername, headervalue))
else:
headervalue = encode_rfc2231(headervalue) # @TODO: check
parts.append('%s=%s' % (headername, headervalue))
mailto_string = 'mailto:%s' % kwargs.get('address', '')
if parts:
mailto_string = '%s?%s' % (mailto_string, '&'.join(parts))
return mailto_string
def mailto(address, to=None, cc=None, bcc=None, subject=None, body=None,
attach=None):
'''Send an e-mail using the user's preferred composer.
Open the user's preferred e-mail composer in order to send a mail to
address(es) that must follow the syntax of RFC822. Multiple addresses
may be provided (for address, cc and bcc parameters) as separate
arguments.
All parameters provided are used to prefill corresponding fields in
the user's e-mail composer. The user will have the opportunity to
change any of this information before actually sending the e-mail.
address - specify the destination recipient
cc - specify a recipient to be copied on the e-mail
bcc - specify a recipient to be blindly copied on the e-mail
subject - specify a subject for the e-mail
body - specify a body for the e-mail. Since the user will be able
to make changes before actually sending the e-mail, this
can be used to provide the user with a template for the
e-mail text may contain linebreaks
attach - specify an attachment for the e-mail. file must point to
an existing file
'''
mailto_string = mailto_format(**locals())
return open(mailto_string)
if __name__ == '__main__':
from optparse import OptionParser
version = '%%prog %s' % __version__
usage = (
'\n\n%prog FILENAME [FILENAME(s)] -- for opening files'
'\n\n%prog -m [OPTIONS] ADDRESS [ADDRESS(es)] -- for sending e-mails'
)
parser = OptionParser(usage=usage, version=version, description=__doc__)
parser.add_option('-m', '--mailto', dest='mailto_mode', default=False,
action='store_true', help='set mailto mode. '
'If not set any other option is ignored')
parser.add_option('--cc', dest='cc', help='specify a recipient to be '
'copied on the e-mail')
parser.add_option('--bcc', dest='bcc', help='specify a recipient to be '
'blindly copied on the e-mail')
parser.add_option('--subject', dest='subject',
help='specify a subject for the e-mail')
parser.add_option('--body', dest='body', help='specify a body for the '
'e-mail. Since the user will be able to make changes '
'before actually sending the e-mail, this can be used '
'to provide the user with a template for the e-mail '
'text may contain linebreaks')
parser.add_option('--attach', dest='attach', help='specify an attachment '
'for the e-mail. file must point to an existing file')
(options, args) = parser.parse_args()
if not args:
parser.print_usage()
parser.exit(1)
if options.mailto_mode:
if not mailto(args, None, options.cc, options.bcc, options.subject,
options.body, options.attach):
sys.exit('Unable to open the e-mail client')
else:
for name in ('cc', 'bcc', 'subject', 'body', 'attach'):
if getattr(options, name):
parser.error('The "cc", "bcc", "subject", "body" and "attach" '
'options are only accepten in mailto mode')
success = False
for arg in args:
if not open(arg):
print 'Unable to open "%s"' % arg
else:
success = True
sys.exit(success)
享受。
答案 1 :(得分：0)
上述代码仅在Python 2中有效。
我已经对其进行了修改，使其可用于Python3。出于安全原因，不再支持“ attach”参数。
#!/usr/bin/env python3
'''Utilities for opening files or URLs in the registered default application
and for sending e-mail using the user's preferred composer.
https://stackoverflow.com/a/19779373/3211506
'''
__version__ = '1.1'
__all__ = ['open', 'mailto']
import os
import sys
import webbrowser
import subprocess
from email.utils import encode_rfc2231
_controllers = {}
_open = None
fileopen = open
class BaseController(object):
'''Base class for open program controllers.'''
def __init__(self, name):
self.name = name
def open(self, filename):
raise NotImplementedError
class Controller(BaseController):
'''Controller for a generic open program.'''
def __init__(self, *args):
super(Controller, self).__init__(os.path.basename(args[0]))
self.args = list(args)
def _invoke(self, cmdline):
if sys.platform[:3] == 'win':
closefds = False
startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
else:
closefds = True
startupinfo = None
if (os.environ.get('DISPLAY') or sys.platform[:3] == 'win' or
sys.platform == 'darwin'):
inout = fileopen(os.devnull, 'r+')
else:
# for TTY programs, we need stdin/out
inout = None
# if possible, put the child precess in separate process group,
# so keyboard interrupts don't affect child precess as well as
# Python
setsid = getattr(os, 'setsid', None)
if not setsid:
setsid = getattr(os, 'setpgrp', None)
pipe = subprocess.Popen(cmdline, stdin=inout, stdout=inout,
stderr=inout, close_fds=closefds,
preexec_fn=setsid, startupinfo=startupinfo)
# It is assumed that this kind of tools (gnome-open, kfmclient,
# exo-open, xdg-open and open for OSX) immediately exit after lauching
# the specific application
returncode = pipe.wait()
if hasattr(self, 'fixreturncode'):
returncode = self.fixreturncode(returncode)
return not returncode
def open(self, filename):
if isinstance(filename, str):
cmdline = self.args + [filename]
else:
# assume it is a sequence
cmdline = self.args + filename
try:
return self._invoke(cmdline)
except OSError:
return False
# Platform support for Windows
if sys.platform[:3] == 'win':
class Start(BaseController):
'''Controller for the win32 start progam through os.startfile.'''
def open(self, filename):
try:
os.startfile(filename)
except WindowsError:
# [Error 22] No application is associated with the specified
# file for this operation: '<URL>'
return False
else:
return True
_controllers['windows-default'] = Start('start')
_open = _controllers['windows-default'].open
# Platform support for MacOS
elif sys.platform == 'darwin':
_controllers['open']= Controller('open')
_open = _controllers['open'].open
# Platform support for Unix
else:
import subprocess, stat
# @WARNING: use the private API of the webbrowser module
# from webbrowser import _iscommand
def _isexecutable(cmd):
if os.path.isfile(cmd):
mode = os.stat(cmd)[stat.ST_MODE]
if mode & stat.S_IXUSR or mode & stat.S_IXGRP or mode & stat.S_IXOTH:
return True
return False
def _iscommand(cmd):
"""Return True if cmd is executable or can be found on the executable
search path."""
if _isexecutable(cmd):
return True
path = os.environ.get("PATH")
if not path:
return False
for d in path.split(os.pathsep):
exe = os.path.join(d, cmd)
if _isexecutable(exe):
return True
return False
class KfmClient(Controller):
'''Controller for the KDE kfmclient program.'''
def __init__(self, kfmclient='kfmclient'):
super(KfmClient, self).__init__(kfmclient, 'exec')
self.kde_version = self.detect_kde_version()
def detect_kde_version(self):
kde_version = None
try:
info = subprocess.getoutput('kde-config --version')
for line in info.splitlines():
if line.startswith('KDE'):
kde_version = line.split(':')[-1].strip()
break
except (OSError, RuntimeError):
pass
return kde_version
def fixreturncode(self, returncode):
if returncode is not None and self.kde_version > '3.5.4':
return returncode
else:
return os.EX_OK
def detect_desktop_environment():
'''Checks for known desktop environments
Return the desktop environments name, lowercase (kde, gnome, xfce)
or "generic"
'''
desktop_environment = 'generic'
if os.environ.get('KDE_FULL_SESSION') == 'true':
desktop_environment = 'kde'
elif os.environ.get('GNOME_DESKTOP_SESSION_ID'):
desktop_environment = 'gnome'
else:
try:
info = subprocess.getoutput('xprop -root _DT_SAVE_MODE')
if ' = "xfce4"' in info:
desktop_environment = 'xfce'
except (OSError, RuntimeError):
pass
return desktop_environment
def register_X_controllers():
if _iscommand('kfmclient'):
_controllers['kde-open'] = KfmClient()
for command in ('gnome-open', 'exo-open', 'xdg-open'):
if _iscommand(command):
_controllers[command] = Controller(command)
def get():
controllers_map = {
'gnome': 'gnome-open',
'kde': 'kde-open',
'xfce': 'exo-open',
}
desktop_environment = detect_desktop_environment()
try:
controller_name = controllers_map[desktop_environment]
return _controllers[controller_name].open
except KeyError:
if 'xdg-open' in _controllers:
return _controllers['xdg-open'].open
else:
return webbrowser.open
if os.environ.get("DISPLAY"):
register_X_controllers()
_open = get()
def open(filename):
'''Open a file or an URL in the registered default application.'''
return _open(filename)
def _fix_addersses(**kwargs):
for headername in ('address', 'to', 'cc', 'bcc'):
try:
headervalue = kwargs[headername]
if not headervalue:
del kwargs[headername]
continue
elif not isinstance(headervalue, str):
# assume it is a sequence
headervalue = ','.join(headervalue)
except KeyError:
pass
except TypeError:
raise TypeError('string or sequence expected for "%s", '
'%s found' % (headername,
type(headervalue).__name__))
else:
translation_map = {'%': '%25', '&': '%26', '?': '%3F'}
for char, replacement in list(translation_map.items()):
headervalue = headervalue.replace(char, replacement)
kwargs[headername] = headervalue
return kwargs
def mailto_format(**kwargs):
# @TODO: implement utf8 option
kwargs = _fix_addersses(**kwargs)
parts = []
for headername in ('to', 'cc', 'bcc', 'subject', 'body'):
if headername in kwargs:
headervalue = kwargs[headername]
if not headervalue:
continue
if headername in ('address', 'to', 'cc', 'bcc'):
parts.append('%s=%s' % (headername, headervalue))
else:
headervalue = encode_rfc2231(headervalue, charset="utf-8")[7:] # @TODO: check
parts.append('%s=%s' % (headername, headervalue))
mailto_string = 'mailto:%s' % kwargs.get('address', '')
if parts:
mailto_string = '%s?%s' % (mailto_string, '&'.join(parts))
return mailto_string
def mailto(address, to=None, cc=None, bcc=None, subject=None, body=None):
'''Send an e-mail using the user's preferred composer.
Open the user's preferred e-mail composer in order to send a mail to
address(es) that must follow the syntax of RFC822. Multiple addresses
may be provided (for address, cc and bcc parameters) as separate
arguments.
All parameters provided are used to prefill corresponding fields in
the user's e-mail composer. The user will have the opportunity to
change any of this information before actually sending the e-mail.
address - specify the destination recipient
cc - specify a recipient to be copied on the e-mail
bcc - specify a recipient to be blindly copied on the e-mail
subject - specify a subject for the e-mail
body - specify a body for the e-mail. Since the user will be able
to make changes before actually sending the e-mail, this
can be used to provide the user with a template for the
e-mail text may contain linebreaks
attach - specify an attachment for the e-mail. file must point to
an existing file (UNSUPPORTED)
'''
mailto_string = mailto_format(**locals())
return open(mailto_string)
if __name__ == '__main__':
from optparse import OptionParser
version = '%%prog %s' % __version__
usage = (
'\n\n%prog FILENAME [FILENAME(s)] -- for opening files'
'\n\n%prog -m [OPTIONS] ADDRESS [ADDRESS(es)] -- for sending e-mails'
)
parser = OptionParser(usage=usage, version=version, description=__doc__)
parser.add_option('-m', '--mailto', dest='mailto_mode', default=False,
action='store_true', help='set mailto mode. '
'If not set any other option is ignored')
parser.add_option('--cc', dest='cc', help='specify a recipient to be '
'copied on the e-mail')
parser.add_option('--bcc', dest='bcc', help='specify a recipient to be '
'blindly copied on the e-mail')
parser.add_option('--subject', dest='subject',
help='specify a subject for the e-mail')
parser.add_option('--body', dest='body', help='specify a body for the '
'e-mail. Since the user will be able to make changes '
'before actually sending the e-mail, this can be used '
'to provide the user with a template for the e-mail '
'text may contain linebreaks')
parser.add_option('--attach', dest='attach', help='specify an attachment '
'for the e-mail. file must point to an existing file')
(options, args) = parser.parse_args()
if not args:
parser.print_usage()
parser.exit(1)
if options.mailto_mode:
if not mailto(args, None, options.cc, options.bcc, options.subject,
options.body, options.attach):
sys.exit('Unable to open the e-mail client')
else:
for name in ('cc', 'bcc', 'subject', 'body', 'attach'):
if getattr(options, name):
parser.error('The "cc", "bcc", "subject", "body" and "attach" '
'options are only accepten in mailto mode')
success = False
for arg in args:
if not open(arg):
print('Unable to open "%s"' % arg)
else:
success = True
sys.exit(success)