added functions/process_exec.py

README.md

@@ -3,12 +3,17 @@
 ### [hawc2](wetb/hawc2) 
 - [Hawc2io](wetb/hawc2/Hawc2io.py): Read binary, ascii and flex result files
 - [sel_file](wetb/hawc2/sel_file.py): Read/write *.sel (sensor list) files
+- [htcfile](wetb/hawc2/htcfile.py): Read/write/manipulate htc files
 - [at_time_file](wetb/hawc2/at_time_file.py): read at output_at_time files
 
+
+
 ### [gtsdf](wetb/gtsdf)
 General Time Series Data Format, a binary hdf5 data format for storing time series data.
 - [gtsdf](wetb/gtsdf/gtsdf.py): read/write/append gtsdf files
 - [unix_time](wetb/gtsdf/unix_time.py): convert between datetime and unix time (seconds since 1/1/1970)
 
 
-
+### [functions](wetb/functions)
+Other functions
+- [process_exec](wetb/functions/process_exec.py): Run system command in subprocess

wetb/functions/process_exec.py

+'''
+Created on 10/03/2014
+
+@author: MMPE
+'''
+
+import os
+
+DEBUG = False
+def pexec(args, cwd=None):
+    """
+    usage: errorcode, stdout, stderr, cmd = pexec("MyProgram.exe arg1, arg2", r"c:\tmp\")
+
+    """
+    import subprocess
+    if not isinstance(args, (list, tuple)):
+        args = [args]
+    args = [str(arg) for arg in args]
+    for i in range(len(args)):
+        if os.path.exists(args[i]):
+            args[i] = str(args[i]).replace('/', os.path.sep).replace('\\', os.path.sep).replace('"', '')
+
+    cmd = "%s" % '{} /c "{}"'.format (os.environ.get("COMSPEC", "cmd.exe"), subprocess.list2cmdline(args))
+    if os.path.isfile(cwd):
+        cwd = os.path.dirname(cwd)
+    proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True, cwd=cwd)
+    stdout, stderr = proc.communicate()
+    errorcode = proc.returncode
+
+    return errorcode, stdout.decode(), stderr.decode(), cmd