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dismod_at
user_example
user_system_command_prc.py
user_system_command_prc.py
@(@\newcommand{\B}[1]{ {\bf #1} }
\newcommand{\R}[1]{ {\rm #1} }
\newcommand{\W}[1]{ \; #1 \; }@)@This is dismod_at-20221105 documentation: Here is a link to its
current documentation
.
Example Using system_command_prc
Discussion
Source Code
Discussion
This example demonstrates some of the different argument cases for the
system_command_prc
function.
Source Code
import sys
import os
import time
#
test_program = 'example/user/system_command_prc.py'
if sys. argv[ 0 ] != test_program or len ( sys. argv) != 1 :
usage = 'python3 ' + test_program + '\n'
usage += 'where python3 is the python 3 program on your system\n'
usage += 'and working directory is the dismod_at distribution directory\n'
sys. exit ( usage)
#
# import dismod_at
local_dir = os. getcwd () + '/python'
if ( os. path. isdir ( local_dir + '/dismod_at' ) ) :
sys. path. insert ( 0 , local_dir)
import dismod_at
#
# change into the build/example/user directory
if not os. path. exists ( 'build/example/user' ) :
os. makedirs ( 'build/example/user' )
os. chdir ( 'build/example/user' )
#
# command
command = [ 'echo' , 'system_command_prc: Test Output' ]
#
# result is stdout
result = dismod_at. system_command_prc (
command ,
print_command = False ,
return_stdout = True ,
return_stderr = False ,
file_stdout = None ,
file_stderr = None ,
write_command = False ,
)
assert result == command[ 1 ] + '\n'
#
# result is None
result = dismod_at. system_command_prc (
command ,
print_command = False ,
return_stdout = False ,
return_stderr = False ,
file_stdout = None ,
file_stderr = None ,
write_command = False ,
)
assert result is None
#
# result is stdout and stderr
result = dismod_at. system_command_prc (
command ,
print_command = False ,
return_stdout = True ,
return_stderr = True ,
file_stdout = None ,
file_stderr = None ,
write_command = False ,
)
assert result. stdout == command[ 1 ] + '\n'
assert result. stderr == ''
#
# file contains stdout
file_name = 'system_command_prc.stdout'
file_stdout = open ( file_name, 'w' )
dismod_at. system_command_prc (
command ,
print_command = False ,
return_stdout = False ,
return_stderr = False ,
file_stdout = file_stdout ,
file_stderr = None ,
write_command = False ,
)
file_stdout. close ()
file_stdout = open ( file_name, 'r' )
result = file_stdout. read ()
assert result == command[ 1 ] + '\n'
os. remove ( file_name)
#
print ( 'system_command_prc.py: OK' )
sys. exit ( 0 )
Input File: example/user/system_command_prc.py