From 08165fcfdcfcd19095d2223677b7229e8c98d57f Mon Sep 17 00:00:00 2001
From: Brandon Rhodes <brandon@rhodesmill.org>
Date: Tue, 27 Aug 2019 15:46:41 -0400
Subject: [PATCH] Only error if directory really does not exist
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On Windows, a user is getting an error from makedirs() with the argument
of the current directory '.'.  Per the comments in a more recent `os.py`
let’s refuse to error out if the directory exists.

Hopefully, fix #283.
---
 skyfield/iokit.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/skyfield/iokit.py b/skyfield/iokit.py
index 1cb176f9e..b91399e73 100644
--- a/skyfield/iokit.py
+++ b/skyfield/iokit.py
@@ -97,7 +97,7 @@ def __init__(self, directory, verbose=True, expire=True):
         try:
             os.makedirs(self.directory)
         except OSError as e:
-            if e.errno != errno.EEXIST:
+            if e.errno != errno.EEXIST and not os.path.isdir(name):
                 raise
 
         # Each instance gets its own copy of these data structures,