added append Functionally

happybase/table.py

@@ -8,7 +8,7 @@
 
 from six import iteritems
 
-from Hbase_thrift import TScan
+from Hbase_thrift import TScan, TAppend
 
 from .util import thrift_type_to_dict, bytes_increment, OrderedDict
 from .batch import Batch
@@ -440,6 +440,28 @@ def scan(self, row_start=None, row_stop=None, row_prefix=None,
     # Data manipulation
     #
 
+    def append(self, row, data):
+        """Appends data to an existing row.
+
+        This method appends data in the `data` argument to
+        existing data for the row specified by `row`. The `data argument is a
+        dictionary that maps columns to values.
+        Column names must include a family and qualifier part, e.g.
+        ``b'cf:col'``, though the qualifier part may be the empty string, e.g.
+        ``b'cf:'``.
+        If there is no data for the specified cell, append will act like put.
+
+
+       :param row: the row key
+        :param data: the data to store
+        """
+        columns, values = map(list, zip(*data.items()))
+        append = TAppend(table=self.name,
+                         row=row,
+                         columns=columns,
+                         values=values)
+        self.connection.client.append(append)
+
     def put(self, row, data, timestamp=None, wal=True):
         """Store data in the table.
 

setup.py

@@ -34,7 +34,7 @@ def get_install_requires():
     include_package_data=True,
     license="MIT",
     classifiers=(
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 2",

tests/test_api.py

@@ -164,6 +164,12 @@ def test_put():
     table.put(b'r1', {b'cf1:c4': b'v2'}, timestamp=1369168852994)
 
 
+def test_append():
+    table.append(b'rAppend', {b'cf1:c1': b'test123'})
+    table.append(b'rAppend', {b'cf1:c1': b'test123'})
+    assert_equal((table.row(b'rAppend')[b'cf1:c1']), b'test123test123')
+
+
 def test_atomic_counters():
     row = b'row-with-counter'
     column = 'cf1:counter'