From 01ca780c99d2e3dc7a42b1e4642d756f0bd74f15 Mon Sep 17 00:00:00 2001
From: Steve Nyemba <nyemba@gmail.com>
Date: Thu, 14 Apr 2022 18:23:43 -0500
Subject: [PATCH] bugfix: date type casting bug

---
 data/maker/__init__.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/data/maker/__init__.py b/data/maker/__init__.py
index 6c2a463..c65cbcf 100644
--- a/data/maker/__init__.py
+++ b/data/maker/__init__.py
@@ -284,6 +284,7 @@ class Generator (Learner):
                     _df[name] = _df[name].astype('datetime64[ns]')
                 else:
                     _df[name] = _df[name].astype(str)
+                _df[name] = _df[name].fillna('')
         if r :
             self.log(**{'action':'format','input':r})
         return _df