From 89d7566a30b131ae49d7bbb1b389a6eab2da168a Mon Sep 17 00:00:00 2001
From: Piper Merriam <pipermerriam@gmail.com>
Date: Fri, 2 Sep 2016 16:33:58 -0600
Subject: [PATCH] mucking with formatters still

---
 web3/formatters.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/web3/formatters.py b/web3/formatters.py
index 5ea8386..b7d0cc8 100644
--- a/web3/formatters.py
+++ b/web3/formatters.py
@@ -39,6 +39,10 @@ from web3.utils.functional import (
 
 
 def apply_if_passes_test(test_fn):
+    """
+    Constructs a decorator that will cause the underlying function to only be
+    applied to the given value if the `test_fn` returns true for that value.
+    """
     def outer_fn(fn):
         @functools.wraps(fn)
         def inner(value):
@@ -148,6 +152,11 @@ apply_if_array_of_dicts = apply_if_passes_test(compose(
 ))
 
 
+filter_output_formatter = apply_if_not_null(apply_if_array_of_dicts(
+    log_array_formatter
+))
+
+
 @coerce_args_to_text
 @coerce_return_to_text
 def output_transaction_receipt_formatter(receipt):
@@ -195,9 +204,6 @@ def output_block_formatter(block):
     }
 
 
-filter_output_formatter = apply_if_array_of_dicts(log_array_formatter)
-
-
 @coerce_return_to_text
 def inputPostFormatter(post):
     """