From 149ca1aebad1501be4a5abceac1504f6237e2794 Mon Sep 17 00:00:00 2001
From: wwflower <106407154+wwflower@users.noreply.github.com>
Date: Fri, 27 May 2022 15:32:18 -0500
Subject: [PATCH] Update usage.rst
I found this very helpful in cleaning up some legacy code so I thought I'd capture the use case.
Document basic use of Proxy and using it for lazy class instantiation.
---
docs/usage.rst | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/docs/usage.rst b/docs/usage.rst
index 3e6e66d..1cfd791 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -5,3 +5,27 @@ Usage
To use lazy-object-proxy in a project::
import lazy_object_proxy
+
+ def heavyweight_function():
+ result = "something_big"
+ return result
+
+ my_big_thing = lazy_object_proxy.Proxy(heavyweight_function)
+
+To do lazy object initialization::
+
+ class BloatedClass(object):
+ def __init__(self):
+ self.a = AnotherClass()
+ self.b = {}
+
+ def get_bloated_dict(self):
+ return self.b
+
+ def bloated_class_init():
+ return BloatedClass()
+
+ # This will not instantiate the class
+ # so to the heavyweight init will not be run yet.
+
+ my_bloated_object = lazy_object_proxy.Proxy(bloated_class_init)
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