-

cool-RR · cool-RR · commit 5f680dc624ef · 2014-03-29T13:36:02.000+03:00
diff --git a/source_py3/python_toolbox/misc_tools/__init__.py b/source_py3/python_toolbox/misc_tools/__init__.py
@@ -9,7 +9,8 @@
     is_magic_variable_name, get_actual_type, is_number, identity_function,
     do_nothing, OwnNameDiscoveringDescriptor, find_clear_place_on_circle,
     general_sum, general_product, is_legal_email_address, is_type, NonInstatiable,
-    repeat_getattr, add_extension_if_plain, set_attributes, pocket
+    repeat_getattr, add_extension_if_plain, set_attributes, pocket,
+    decimal_number_from_string
 )
 from . import name_mangling
 from .proxy_property import ProxyProperty
diff --git a/source_py3/python_toolbox/misc_tools/misc_tools.py b/source_py3/python_toolbox/misc_tools/misc_tools.py
@@ -336,4 +336,11 @@ def pocket(*args):
         (pocket.container.value,) = args
     else:
         return pocket.container.value
-    
+    
+
+_decimal_number_pattern = \
+                   re.compile('''^-?(?:(?:[0-9]+(?:.[0-9]*)?)|(?:.[0-9]+))$''')
+def decimal_number_from_string(string):
+    if not _decimal_number_pattern.match(string):
+        raise Exception("%s isn't a decimal number." % string)
+    return float(string) if '.' in string else int(string)
