:add: minor version with runtime.safebuiltin function.

b3j0f/utils/runtime.py

@@ -46,13 +46,47 @@
 from types import FunctionType, ModuleType
 
 try:
-    import __builtin__
+    import __builtin__  #: builtin module.
 except ImportError:
-    import builtins as __builtin__
+    import builtins as __builtin__  #: builtin module.
 
 from .version import PY3
 
-__all__ = ['bind_all', 'make_constants']
+__all__ = ['bind_all', 'make_constants', '__builtin__', 'safebuiltin']
+
+
+IO_PROPS = [
+    'open', '__name__', '__debug__', '__doc__', '__import__', '__package__',
+    'compile', 'copyright', 'credits', 'eval', 'execfile', 'exit', 'file',
+    'globals', 'help', 'input', 'intern', 'license', 'locals', 'open', 'print',
+    'quit', 'raw_input', 'reload'
+]  #: set of builtin objects to remove from a safe builtin.
+
+_SAFEBUILTIN = None  #: protected safebuiltin.
+
+
+def safebuiltin(renew=False):
+    """Construct a safe builtin environment without I/O functions.
+
+    :param bool renew: renew the safebuiltin if True (False by default).
+    :rtype: dict
+    """
+
+    result = _SAFEBUILTIN
+
+    if result is None or renew:
+
+        result = {}
+
+        objectnames = [
+            objectname for objectname in dir(__builtin__)
+            if objectname not in IO_PROPS
+        ]
+
+        for objectname in objectnames:
+            result[objectname] = __builtin__[objectname]
+
+    return result
 
 STORE_GLOBAL = opmap['STORE_GLOBAL']
 LOAD_GLOBAL = opmap['LOAD_GLOBAL']

b3j0f/utils/version.py

@@ -50,17 +50,18 @@
 # thanks to https://github.com/pycontribs/jira/blob/master/jira/version.py
 
 #: project version
-__version__ = '1.0.0'
+__version__ = '1.1.0'
 
 
-PY3 = version_info[0] == 3  #: python3
-PY2 = version_info[0] == 2  #: python2
-PY26 = PY2 and version_info[1] == 6  #: python2.6
-PY27 = PY2 and version_info[1] == 7  #: python2.7
-PYPY = python_implementation() == 'PyPy'  #: pypy
-CPYTHON = python_implementation() == 'CPython'  #: cpython
-JYTHON = python_implementation() == 'Jython'  #: jython
-IRONPYTHON = python_implementation() == 'IronPython'  #: IronPython
+PY3 = version_info[0] == 3  #: python3.
+PY2 = version_info[0] == 2  #: python2.
+PY26 = PY2 and version_info[1] == 6  #: python2.6.
+PY27 = PY2 and version_info[1] == 7  #: python2.7.
+PYPY = python_implementation() == 'PyPy'  #: pypy.
+CPYTHON = python_implementation() == 'CPython'  #: cpython.
+JYTHON = python_implementation() == 'Jython'  #: jython.
+IRONPYTHON = python_implementation() == 'IronPython'  #: IronPython.
+
 
 if PY3:  # set references to common object with different names
     # define python3 functions with python2 names

changelog.rst

@@ -1,6 +1,11 @@
 ChangeLog
 =========
 
+1.0.1 (2015/10/29)
+------------------
+
+- add the function safebuiltin and the module __builtin__ in the runtime module.
+
 1.0.0 (2015/10/20)
 ------------------
 

setup.py

@@ -82,7 +82,7 @@
         'Natural Language :: French',
         'Operating System :: OS Independent',
         'Topic :: Utilities',
-        'Topic :: Software Development',
+        'Topic :: Software Development :: Libraries :: Python Modules',
         'Intended Audience :: Developers',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.6',
@@ -93,7 +93,9 @@
         'Programming Language :: Python :: 3.2',
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5'
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy'
     ],
     test_suite='b3j0f',
     keywords=KEYWORDS