From c3a3cbadd429fb80a2afdeb181ad94f2c7c030ff Mon Sep 17 00:00:00 2001
From: jim <jim@rybarski.com>
Date: Mon, 12 Oct 2015 14:36:07 -0500
Subject: [PATCH] resolves #101: No longer assumes a date will always be
 present in the metadata and falls back by displayed "Unknown" in the Nd2 repr

---
 Makefile                    | 2 +-
 nd2reader/interface.py      | 2 +-
 nd2reader/model/metadata.py | 2 +-
 nd2reader/parser/v3.py      | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index c6af2e3..58e9178 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ test:	build
 	docker run --rm -it jimrybarski/nd2reader python3.4 /opt/nd2reader/tests.py
 	docker run --rm -it jimrybarski/nd2reader python2.7 /opt/nd2reader/tests.py
 
-functest:	build
+ftest:	build
 	docker run --rm -v ~/nd2s:/var/nd2s -it jimrybarski/nd2reader python3.4 /opt/nd2reader/ftests.py
 	docker run --rm -v ~/nd2s:/var/nd2s -it jimrybarski/nd2reader python2.7 /opt/nd2reader/ftests.py
 	
diff --git a/nd2reader/interface.py b/nd2reader/interface.py
index a0d1d4f..05e673f 100644
--- a/nd2reader/interface.py
+++ b/nd2reader/interface.py
@@ -28,7 +28,7 @@ class Nd2(object):
         
     def __repr__(self):
         return "\n".join(["<ND2 %s>" % self._filename,
-                          "Created: %s" % self.date,
+                          "Created: %s" % self.date if self.date is not None else "Unknown",
                           "Image size: %sx%s (HxW)" % (self.height, self.width),
                           "Frames: %s" % len(self.frames),
                           "Channels: %s" % ", ".join(["'%s'" % str(channel) for channel in self.channels]),
diff --git a/nd2reader/model/metadata.py b/nd2reader/model/metadata.py
index 11a0164..536f0b9 100644
--- a/nd2reader/model/metadata.py
+++ b/nd2reader/model/metadata.py
@@ -35,7 +35,7 @@ class Metadata(object):
         """
         The date and time when acquisition began.
 
-        :rtype: datetime.datetime()
+        :rtype: datetime.datetime() or None
 
         """
         return self._date
diff --git a/nd2reader/parser/v3.py b/nd2reader/parser/v3.py
index f8bc7fd..e71c3c1 100644
--- a/nd2reader/parser/v3.py
+++ b/nd2reader/parser/v3.py
@@ -59,7 +59,7 @@ class V3Parser(BaseParser):
         """
         The date and time when acquisition began.
 
-        :rtype: datetime.datetime()
+        :rtype: datetime.datetime() or None
 
         """
         for line in metadata_dict[six.b('ImageTextInfo')][six.b('SLxImageTextInfo')].values():
@@ -78,7 +78,7 @@ class V3Parser(BaseParser):
             if not absolute_start_12 and not absolute_start_24:
                 continue
             return absolute_start_12 if absolute_start_12 else absolute_start_24
-        raise ValueError("This ND2 has no recorded start time. This is probably a bug.")
+        return None
 
     def _parse_channels(self, metadata_dict):
         """