Fixed #23167 -- Added BaseForm.__repr__()

Thanks Keryn Knight for the idea.

django/forms/forms.py

@@ -134,6 +134,18 @@ class BaseForm(object):
     def __str__(self):
         return self.as_table()
 
+    def __repr__(self):
+        if self._errors is None:
+            is_valid = "Unknown"
+        else:
+            is_valid = self.is_bound and not bool(self._errors)
+        return '<%(cls)s bound=%(bound)s, valid=%(valid)s, fields=(%(fields)s)>' % {
+            'cls': self.__class__.__name__,
+            'bound': self.is_bound,
+            'valid': is_valid,
+            'fields': ';'.join(self.fields),
+        }
+
     def __iter__(self):
         for name in self.fields:
             yield self[name]