diff --git a/sp.py b/sp.py
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+# Helper Functions
+
+# Enumeration
+#
+# These are simple enumeration methods for walking over various SharePoint
+# objects and collections.
+
+def _enum(col, fn):
+	"""Enumerate a collection and call function fn for each item."""
+	for x in col:
+		fn(x)
+
+
+def enum_sites(webapp, fn):
+	"""
+	Enumerate all site collections in the specified web application
+	and call the specified function with each site collection.
+	"""
+	# just in case we were passed a URL, get the web app
+	webapp = get_webapplication(webapp)
+	_enum(webapp.Sites, fn)
+
+
+
+# Get Object Helper Methods
+# These methods take in some sort of object identifier (usually a URL)
+# and return the appropriate object instance
+
+def get_webapplication(url):
+	"""Gets a web application by its URL"""
+	if type(url) is SPWebApplication:
+		return url
+	
+	return SPWebApplication.Lookup(Uri(url))
+
+
+def get_site(url):
+	"""Gets a site collection by its URL"""
+	if type(url) is SPSite:
+		return url
+	
+	return SPSite(url)
+
+
+def get_web(url):
+	"""Gets a web by its URL"""
+	if type(url) is SPWeb:
+		return url
+	
+	if type(url) is SPSite:
+		return url.RootWeb
+	
+	return SPSite(url).OpenWeb(url)
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