From 7da72fe9cb6067363915ceafefc8ade0458337e0 Mon Sep 17 00:00:00 2001
From: fredfortier <fredfortier@gmail.com>
Date: Sat, 4 Nov 2017 16:22:10 -0400
Subject: [PATCH 1/3] BUG: working on issue #55

---
 catalyst/support/issue_55.py | 42 ++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 catalyst/support/issue_55.py

diff --git a/catalyst/support/issue_55.py b/catalyst/support/issue_55.py
new file mode 100644
index 00000000..bd17af90
--- /dev/null
+++ b/catalyst/support/issue_55.py
@@ -0,0 +1,42 @@
+import talib
+import pandas as pd
+
+from catalyst import run_algorithm
+from catalyst.api import symbol
+
+
+def initialize(context):
+    print('initializing')
+    context.asset = symbol('xcp_btc')
+
+
+def handle_data(context, data):
+    print('handling bar: {}'.format(data.current_dt))
+
+    price = data.current(context.asset, 'close')
+    print('got price {price}'.format(price=price))
+
+    try:
+        prices = data.history(
+            context.asset,
+            fields='price',
+            bar_count=1,
+            frequency='1D'
+        )
+        print('got {} price entries'.format(len(prices)))
+    except Exception as e:
+        print(e)
+
+
+run_algorithm(
+    capital_base=1,
+    start=pd.to_datetime('2015-3-2', utc=True),
+    end=pd.to_datetime('2017-8-31', utc=True),
+    data_frequency='daily',
+    initialize=initialize,
+    handle_data=handle_data,
+    analyze=None,
+    exchange_name='poloniex',
+    algo_namespace='issue_55',
+    base_currency='btc'
+)

From c9c16f54b1a54d3b0c9636f3088ea8113746b65d Mon Sep 17 00:00:00 2001
From: fredfortier <fredfortier@gmail.com>
Date: Sat, 4 Nov 2017 16:38:54 -0400
Subject: [PATCH 2/3] BUG: fixed on issue #55 with single history bar

---
 catalyst/exchange/exchange_bundle.py | 2 +-
 catalyst/support/issue_55.py         | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/catalyst/exchange/exchange_bundle.py b/catalyst/exchange/exchange_bundle.py
index a634757d..b5c66d7b 100644
--- a/catalyst/exchange/exchange_bundle.py
+++ b/catalyst/exchange/exchange_bundle.py
@@ -435,7 +435,7 @@ class ExchangeBundle:
         if end is None or (last_entry is not None and end > last_entry):
             end = last_entry
 
-        if end is None or start is None or start >= end:
+        if end is None or start is None or start > end:
             raise NoDataAvailableOnExchange(
                 exchange=[asset.exchange for asset in assets],
                 symbol=[asset.symbol for asset in assets],
diff --git a/catalyst/support/issue_55.py b/catalyst/support/issue_55.py
index bd17af90..195f5019 100644
--- a/catalyst/support/issue_55.py
+++ b/catalyst/support/issue_55.py
@@ -19,11 +19,11 @@ def handle_data(context, data):
     try:
         prices = data.history(
             context.asset,
-            fields='price',
+            fields='close',
             bar_count=1,
             frequency='1D'
         )
-        print('got {} price entries'.format(len(prices)))
+        print('got {} price entries\n'.format(len(prices), prices))
     except Exception as e:
         print(e)
 

From d4148891fc99c877a8115999cef7a56471ffa738 Mon Sep 17 00:00:00 2001
From: fredfortier <fredfortier@gmail.com>
Date: Sat, 4 Nov 2017 16:43:27 -0400
Subject: [PATCH 3/3] DOC: updated release notes prior to release

---
 docs/source/releases.rst | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/docs/source/releases.rst b/docs/source/releases.rst
index 4a01d62c..01b215cb 100644
--- a/docs/source/releases.rst
+++ b/docs/source/releases.rst
@@ -2,9 +2,18 @@
 Release Notes
 =============
 
+Version 0.3.6
+^^^^^^^^^^^^^
+**Release Date**: 2017-11-4
+
+Bug Fixes
+~~~~~~~~~
+
+- Fixed an issue with single bar data.history() (:issue:`55`)
+
 Version 0.3.5
 ^^^^^^^^^^^^^
-**Release Date**: 2017-11-2
+**Release Date**: 2017-11-4
 
 Bug Fixes
 ~~~~~~~~~