bugfix: import numpy needs putenv and getcwd

execute.py

@@ -199,7 +199,7 @@ def reliability_guard(maximum_memory_bytes=None):
 
     os.kill = None
     os.system = None
-    os.putenv = None
+    # os.putenv = None
     os.remove = None
     os.removedirs = None
     os.rmdir = None
@@ -222,7 +222,7 @@ def reliability_guard(maximum_memory_bytes=None):
     os.lchflags = None
     os.lchmod = None
     os.lchown = None
-    os.getcwd = None
+    # os.getcwd = None
     os.chdir = None
 
     import shutil