Env now supports float values

ipalib/config.py

@@ -65,10 +65,10 @@ class Env(object):
     >>> env.item  # Also retrieve as an attribute
     'I was set as a dictionary item.'
 
-    The variable values can be ``str`` or ``int`` instances, or the ``True``,
-    ``False``, or ``None`` constants.  When the value provided is an ``str``
-    instance, some limited automatic type conversion is performed, which allows
-    values of specific types to be set easily from configuration files or
+    The variable values can be ``str``, ``int``, or ``float`` instances, or the
+    ``True``, ``False``, or ``None`` constants.  When the value provided is an
+    ``str`` instance, some limited automatic type conversion is performed, which
+    allows values of specific types to be set easily from configuration files or
     command-line options.
 
     So in addition to their actual values, the ``True``, ``False``, and ``None``
@@ -89,11 +89,15 @@ class Env(object):
     'false'
 
     If an ``str`` value looks like an integer, it's automatically converted to
-    the ``int`` type.  For example:
+    the ``int`` type.  Likewise, if an ``str`` value looks like a floating-point
+    number, it's automatically converted to the ``float`` type.  For example:
 
     >>> env.lucky = '7'
     >>> env.lucky
     7
+    >>> env.three_halves = '1.5'
+    >>> env.three_halves
+    1.5
 
     Leading and trailing white-space is automatically stripped from ``str``
     values.  For example:
@@ -232,7 +236,12 @@ class Env(object):
                 value = m[value]
             elif value.isdigit():
                 value = int(value)
-        assert type(value) in (str, int, bool, NoneType)
+            else:
+                try:
+                    value = float(value)
+                except (TypeError, ValueError):
+                    pass
+        assert type(value) in (str, int, float, bool, NoneType)
         object.__setattr__(self, key, value)
         self.__d[key] = value
 

tests/test_ipalib/test_config.py

@@ -1,5 +1,6 @@
 # Authors:
 #   Martin Nagy <mnagy@redhat.com>
+#   Jason Gerard DeRose <jderose@redhat.com>
 #
 # Copyright (C) 2008  Red Hat
 # see file 'COPYING' for use and warranty information
@@ -41,6 +42,8 @@ good_vars = (
     ('trailing_whitespace', ' value  ', 'value'),
     ('an_int', 42, 42),
     ('int_repr', ' 42 ', 42),
+    ('a_float', 3.14, 3.14),
+    ('float_repr', ' 3.14 ', 3.14),
     ('true', True, True),
     ('true_repr', ' True ', True),
     ('false', False, False),
@@ -120,9 +123,12 @@ key3 = var3
 config_good = """
 [global]
 
+string = Hello world!
+null = None
 yes = True
 no = False
 number = 42
+floating = 3.14
 """
 
 
@@ -372,11 +378,15 @@ class test_Env(ClassChecker):
         good = tmp.join('good.conf')
         open(good, 'w').write(config_good)
         assert path.isfile(good)
-        assert o._merge_from_file(good) == (3, 3)
-        assert list(o) == sorted(keys + ('yes', 'no', 'number'))
+        assert o._merge_from_file(good) == (6, 6)
+        added = ('string', 'null', 'yes', 'no', 'number', 'floating')
+        assert list(o) == sorted(keys + added)
+        assert o.string == 'Hello world!'
+        assert o.null is None
         assert o.yes is True
         assert o.no is False
         assert o.number == 42
+        assert o.floating == 3.14
 
     def new(self):
         """