Nest try/except/finally for use on Python 2.4. Fixes #72.

CHANGES.txt

@@ -8,6 +8,7 @@ CHANGES
 
 * Issue #71 (Distribute Issue #333): EasyInstall now puts less emphasis on the
   condition when a host is blocked via ``--allow-hosts``.
+* Issue #72: Restored Python 2.4 compatibility in ``ez_setup.py``.
 
 ---
 1.0

ez_setup.py

@@ -170,9 +170,10 @@ def has_powershell():
     cmd = ['powershell', '-Command', 'echo test']
     devnull = open(os.path.devnull, 'wb')
     try:
-        subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
-    except:
-        return False
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
     finally:
         devnull.close()
     return True
@@ -187,9 +188,10 @@ def has_curl():
     cmd = ['curl', '--version']
     devnull = open(os.path.devnull, 'wb')
     try:
-        subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
-    except:
-        return False
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
     finally:
         devnull.close()
     return True
@@ -204,9 +206,10 @@ def has_wget():
     cmd = ['wget', '--version']
     devnull = open(os.path.devnull, 'wb')
     try:
-        subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
-    except:
-        return False
+        try:
+            subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
+        except:
+            return False
     finally:
         devnull.close()
     return True