Merge pull request #145 from anybox/issn-fields

ISSN title and number

README.md

@@ -83,12 +83,12 @@ ANSI Common Lisp /
 
 A `pymarc.Record` object has a few handy methods like `title` for getting at
 bits of a bibliographic record, others include: `author`, `isbn`, `subjects`,
-`location`, `notes`, `physicaldescription`, `publisher`, `pubyear`. But
-really, to work with MARC data you need to understand the numeric field tags
-and subfield codes that are used to designate various bits of information. There
-is a lot more hiding in a MARC record than these methods provide access to.
-For example the `title` method extracts the information from the `245` field,
-subfields `a` and `b`. You can access `245a` like so:
+`location`, `notes`, `physicaldescription`, `publisher`, `pubyear`, `issn`,
+`issn_title`. But really, to work with MARC data you need to understand the
+numeric field tags and subfield codes that are used to designate various bits
+of information. There is a lot more hiding in a MARC record than these methods
+provide access to. For example the `title` method extracts the information from
+ the `245` field, subfields `a` and `b`. You can access `245a` like so:
 
 ```python
 print(record['245']['a'])

pymarc/record.py

@@ -419,7 +419,7 @@ def as_json(self, **kwargs):
 
     def title(self):
         """
-        Returns the title of the record (245 $a an $b).
+        Returns the title of the record (245 $a and $b).
         """
         try:
             title = self['245']['a']
@@ -432,6 +432,21 @@ def title(self):
                 pass
         return title
 
+    def issn_title(self):
+        """
+        Returns the key title of the record (222 $a and $b).
+        """
+        try:
+            title = self['222']['a']
+        except TypeError:
+            title = None
+        if title:
+            try:
+                title += " " + self['222']['b']
+            except TypeError:
+                pass
+        return title
+
     def isbn(self):
         """
         Returns the first ISBN in the record or None if one is not
@@ -451,6 +466,15 @@ def isbn(self):
             pass
         return None
 
+    def issn(self):
+        """
+        Returns the ISSN number [022]['a'] in the record or None
+        """
+        try:
+            return self['022']['a']
+        except TypeError:
+            return None
+
     def sudoc(self):
         """
         Returns a Superintendent of Documents (SuDoc) classification number

test/record.py

@@ -111,6 +111,23 @@ def test_title(self):
             subfields=['a', "Farghin"]))
         self.assertEqual(record.title(), "Farghin")
 
+    def test_issn_title(self):
+        record = Record()
+        self.assertEqual(record.issn_title(), None)
+        record.add_field(Field('222', ["", ""],
+            subfields=['a', 'Foo :', 'b', 'bar']))
+        self.assertEqual(record.issn_title(), 'Foo : bar')
+
+        record = Record()
+        record.add_field(Field('222', ["", ""],
+            subfields=['a', "Farghin"]))
+        self.assertEqual(record.issn_title(), "Farghin")
+
+        record = Record()
+        record.add_field(Field('222', ["", ""],
+            subfields=['b', "bar"]))
+        self.assertEqual(record.issn_title(), None)
+
     def test_isbn(self):
         record = Record()
         self.assertEqual(record.isbn(), None)
@@ -133,6 +150,12 @@ def test_isbn(self):
         record.add_field(Field('020', [' ', ' '], subfields=['a', '006073132X']))
         self.assertEqual(record.isbn(), '006073132X')
 
+    def test_issn(self):
+        record = Record()
+        self.assertEqual(record.issn(), None)
+        record.add_field(Field(tag="022", indicators=["0", ""], subfields=["a", "0395-2037"]))
+        self.assertEqual(record.issn(), '0395-2037')
+
     def test_multiple_isbn(self):
         with open('test/multi_isbn.dat', 'rb') as fh:
             reader = MARCReader(fh)