MAINT: remove exec_command usage in ibm.py (#11901)

tylerjereddy · eric-wieser · commit 88c01b8ab426 · 2018-09-15T12:50:02.000-07:00
Replaced the usage of exec_command() in distutils ibm module with subprocess.check_output
diff --git a/numpy/distutils/fcompiler/ibm.py b/numpy/distutils/fcompiler/ibm.py
@@ -3,9 +3,10 @@
 import os
 import re
 import sys
+import subprocess
 
 from numpy.distutils.fcompiler import FCompiler
-from numpy.distutils.exec_command import exec_command, find_executable
+from numpy.distutils.exec_command import find_executable
 from numpy.distutils.misc_util import make_temp_file
 from distutils import log
 
@@ -35,9 +36,13 @@ def get_version(self,*args,**kwds):
             lslpp = find_executable('lslpp')
             xlf = find_executable('xlf')
             if os.path.exists(xlf) and os.path.exists(lslpp):
-                s, o = exec_command(lslpp + ' -Lc xlfcmp')
-                m = re.search(r'xlfcmp:(?P<version>\d+([.]\d+)+)', o)
-                if m: version = m.group('version')
+                try:
+                    o = subprocess.check_output([lslpp, '-Lc', 'xlfcmp'])
+                except (OSError, subprocess.CalledProcessError):
+                    pass
+                else:
+                    m = re.search(r'xlfcmp:(?P<version>\d+([.]\d+)+)', o)
+                    if m: version = m.group('version')
 
         xlf_dir = '/etc/opt/ibmcmp/xlf'
         if version is None and os.path.isdir(xlf_dir):
