Source code for tendo.execfile2
from __future__ import print_function
import os, sys, unittest, tempfile, shlex
if sys.hexversion > 0x03000000:
def execfile(file, globals=globals(), locals=locals()):
with open(file, "r") as fh:
exec(fh.read()+"\n", globals, locals)
[docs]def execfile2(filename, _globals=dict(), _locals=dict(), cmd=None, quiet=False):
"""
Execute a Python script using :py:func:`execfile`.
In addition to Python :py:func:`execfile` this method can temporary change the argv params.
This enables you to call an external python script that requires
command line arguments without leaving current python interpretor.
`cmd` can be a string with command line arguments or a list or arguments
The return value is a numeric exit code similar to the one used for command line tools:
- 0 - if succesfull; this applies if script receives SystemExit with error code 0
- 1 - if SystemExit does not contain an error code or if other Exception is received.
- x - the SystemExit error code (if present)
"""
_globals['__name__']='__main__'
saved_argv = sys.argv # we save sys.argv
if cmd:
sys.argv=list([filename])
if isinstance(cmd , list):
sys.argv.append(cmd)
else:
sys.argv.extend(shlex.split(cmd))
exit_code = 0
try:
execfile(filename, _globals, _locals)
except SystemExit as e:
if isinstance(e.code , int):
exit_code = e.code # this could be 0 if you do sys.exit(0)
else:
exit_code = 1
except Exception:
if not quiet:
import traceback
traceback.print_exc(file=sys.stderr)
exit_code = 1
finally:
if cmd:
sys.argv = saved_argv # we restore sys.argv
return exit_code
class testExecfile(unittest.TestCase):
def _exec_py_code(self, code, cmd=None):
(ftmp, fname_tmp) = tempfile.mkstemp()
f = open(fname_tmp,"w") # encoding not specified, should use utf-8
f.write(code)
f.close()
exit_code = execfile2(fname_tmp, cmd=cmd, quiet=True)
os.close(ftmp)
os.unlink(fname_tmp)
return exit_code
def test_normal_execution(self):
exit_code = self._exec_py_code("")
self.assertTrue(exit_code==0)
def test_bad_code(self):
exit_code = self._exec_py_code("bleah")
self.assertTrue(exit_code==1)
def test_sys_exit_0(self):
exit_code = self._exec_py_code("import sys; sys.exit(0)")
self.assertTrue(exit_code==0)
def test_sys_exit_5(self):
exit_code = self._exec_py_code("import sys; sys.exit(5)")
self.assertTrue(exit_code==5)
def test_sys_exit_text(self):
exit_code = self._exec_py_code("import sys; sys.exit('bleah')")
self.assertTrue(exit_code==1)
def test_raised_exception(self):
exit_code = self._exec_py_code("raise Exception('bleah')")
self.assertTrue(exit_code==1)
def test_command_line(self):
exit_code = self._exec_py_code("import sys\nif len(sys.argv)==2 and sys.argv[1]=='doh!': sys.exit(-1)", cmd="doh!")
self.assertTrue(exit_code==-1)
if __name__ == "__main__":
unittest.main()