Fixing test_db errors

.travis.yml

@@ -1,7 +1,6 @@
 language: python
 
 python:
-    - "2.6"
     - "2.7"
     - "pypy"
     - "3.3"
@@ -13,6 +12,7 @@ matrix:
         - python: "pypy"
 
 install:
+    - pip install --upgrade --pre setuptools
     - if [ "$TRAVIS_PYTHON_VERSION" == "2.6" ]; then pip install unittest2; fi
     - pip install future
     - python setup.py install --quiet

pattern/db/__init__.py

@@ -25,6 +25,7 @@
 from time import mktime, strftime
 from math import sqrt
 from types import GeneratorType
+from functools import cmp_to_key
 
 try:  # Python 2.x vs 3.x
     from cStringIO import StringIO
@@ -528,7 +529,7 @@ def order(list, cmp=None, key=None, reverse=False):
         f = lambda i, j: int(key(list[i]) >= key(list[j])) * 2 - 1
     else:
         f = lambda i, j: int(list[i] >= list[j]) * 2 - 1
-    return sorted(range(len(list)), cmp=f, reverse=reverse)
+    return sorted(range(len(list)), key=cmp_to_key(f), reverse=reverse)
 
 _order = order
 
@@ -1271,7 +1272,7 @@ def filter(self, *args, **kwargs):
         q = " and ".join(cmp(k, v, "=", self.db.escape)
                          for k, v in kwargs.items())
         q = q and " where %s" % q or ""
-        q = "select %s from `%s`%s;" % (fields, self.name, q)
+        q = "select %s from '%s'%s;" % (fields, self.name, q)
         return self.Rows(self, self.db.execute(q))
 
     def find(self, *args, **kwargs):
@@ -1306,9 +1307,9 @@ def insert(self, *args, **kwargs):
                 zip((f for f in self.fields if f != self.pk), args[0]))
         if len(self.default) > 0:
             kwargs.update(self.default)
-        k = ", ".join("`%s`" % k for k in kwargs.keys())
-        v = ", ".join(self.db.escape(v) for v in kwargs.values())
-        q = "insert into `%s` (%s) values (%s);" % (self.name, k, v)
+        k = ", ".join("'%s'" % k for k in kwargs.keys())
+        v = ", ".join("'%s'" % str(v) for v in kwargs.values())
+        q = "insert into %s (%s) values (%s);" % (self.name, k, v)
         self.db.execute(q, commit)
         return self._insert_id()
 
@@ -2539,7 +2540,8 @@ def copy(self, rows=ALL, columns=ALL):
         if columns == ALL:
             return Datasheet(rows=(self.rows[i] for i in rows))
         z = zip(*(self.columns[j] for j in columns))
-        return Datasheet(rows=(z[i] for i in rows))
+        z_list = list(z)
+        return Datasheet(rows=(z_list[i] for i in rows))
 
     @property
     def array(self):