Added captcha to thirdpart

thirdpart/captcha/__init__.py

@@ -0,0 +1,28 @@
+import re
+
+VERSION = (0, 4, 0)
+
+
+def get_version(svn=False):
+    "Returns the version as a human-format string."
+    return '.'.join([str(i) for i in VERSION])
+
+
+def pillow_required():
+    def pil_version(version):
+        try:
+            return int(re.compile('[^\d]').sub('', version))
+        except:
+            return 116
+
+    try:
+        from PIL import Image, ImageDraw, ImageFont
+    except ImportError:
+        try:
+            import Image
+            import ImageDraw
+            import ImageFont
+        except ImportError:
+            return True
+
+    return pil_version(Image.VERSION) < 116