From f51fd0f7e97618b0114f26a39d94e9c48b759582 Mon Sep 17 00:00:00 2001
From: Simon Kassel <kassel.simon@gmail.com>
Date: Mon, 11 May 2020 15:12:59 -0400
Subject: [PATCH 1/3] fix make_absolute_href

---
 pystac/utils.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pystac/utils.py b/pystac/utils.py
index 4277dcb76..f6574e3c8 100644
--- a/pystac/utils.py
+++ b/pystac/utils.py
@@ -87,8 +87,12 @@ def make_absolute_href(source_href, start_href=None, start_is_dir=False):
 
     Returns:
         str: The absolute HREF. If the source_href is already an absolute href,
-        then it will be returned unchanged.
+        then it will be returned unchanged. If the source_href it None, it will
+        return None.
     """
+    if source_href == None:
+        return None
+
     if start_href is None:
         start_href = os.getcwd()
         start_is_dir = True

From 615e4bb28268a031fef9faa02ecac92d9c11947c Mon Sep 17 00:00:00 2001
From: Simon Kassel <kassel.simon@gmail.com>
Date: Mon, 11 May 2020 16:25:35 -0400
Subject: [PATCH 2/3] styling changes

---
 pystac/eo.py    | 16 ++++++++--------
 pystac/utils.py |  2 +-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/pystac/eo.py b/pystac/eo.py
index 9b022ddd7..0bc7f2556 100644
--- a/pystac/eo.py
+++ b/pystac/eo.py
@@ -374,14 +374,14 @@ class Band:
             as measured at half the maximum transmission, in micrometers (μm).
     """
     def __init__(
-            self,
-            name=None,
-            common_name=None,
-            description=None,
-            gsd=None,
-            accuracy=None,
-            center_wavelength=None,
-            full_width_half_max=None,
+        self,
+        name=None,
+        common_name=None,
+        description=None,
+        gsd=None,
+        accuracy=None,
+        center_wavelength=None,
+        full_width_half_max=None,
     ):
         self.name = name
         self.common_name = common_name
diff --git a/pystac/utils.py b/pystac/utils.py
index f6574e3c8..1d0c646fa 100644
--- a/pystac/utils.py
+++ b/pystac/utils.py
@@ -90,7 +90,7 @@ def make_absolute_href(source_href, start_href=None, start_is_dir=False):
         then it will be returned unchanged. If the source_href it None, it will
         return None.
     """
-    if source_href == None:
+    if source_href is None:
         return None
 
     if start_href is None:

From 92ce7207cd81f76943c36bc38bc0545622b942a4 Mon Sep 17 00:00:00 2001
From: Simon Kassel <kassel.simon@gmail.com>
Date: Tue, 12 May 2020 11:43:54 -0400
Subject: [PATCH 3/3] revert styling changes

---
 pystac/eo.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/pystac/eo.py b/pystac/eo.py
index 0bc7f2556..9b022ddd7 100644
--- a/pystac/eo.py
+++ b/pystac/eo.py
@@ -374,14 +374,14 @@ class Band:
             as measured at half the maximum transmission, in micrometers (μm).
     """
     def __init__(
-        self,
-        name=None,
-        common_name=None,
-        description=None,
-        gsd=None,
-        accuracy=None,
-        center_wavelength=None,
-        full_width_half_max=None,
+            self,
+            name=None,
+            common_name=None,
+            description=None,
+            gsd=None,
+            accuracy=None,
+            center_wavelength=None,
+            full_width_half_max=None,
     ):
         self.name = name
         self.common_name = common_name