From d140b8ec24507ef67ef8deac03459e3ef06c3f3d Mon Sep 17 00:00:00 2001
From: Syrus Akbary <me@syrusakbary.com>
Date: Sat, 29 Apr 2017 17:15:55 -0700
Subject: [PATCH] Removed ThreadScheduler as normal requirement

Some environments could have threading disabled, and therefore the threading import can resolve in an error.
This commit fixes that :)
---
 promise/__init__.py         | 6 +++++-
 promise/scheduler.py        | 9 ---------
 promise/thread_scheduler.py | 7 +++++++
 3 files changed, 12 insertions(+), 10 deletions(-)
 create mode 100644 promise/thread_scheduler.py

diff --git a/promise/__init__.py b/promise/__init__.py
index 03cb6ad..bfd81a1 100644
--- a/promise/__init__.py
+++ b/promise/__init__.py
@@ -24,7 +24,11 @@
         get_default_scheduler,
         set_default_scheduler
     )
-    from .scheduler import SyncScheduler, ThreadScheduler
+    from .scheduler import SyncScheduler
+    try:
+        from .thread_sheduler import ThreadScheduler
+    except ImportError:
+        ThreadScheduler = None
 
     __all__ = [
         'Promise',
diff --git a/promise/scheduler.py b/promise/scheduler.py
index 015a909..766cde3 100644
--- a/promise/scheduler.py
+++ b/promise/scheduler.py
@@ -1,15 +1,6 @@
-from threading import Thread
-
-
 class SyncScheduler(object):
     def call(self, fn):
         try:
             fn()
         except:
             pass
-
-
-class ThreadScheduler(object):
-    def call(self, fn):
-        thread = Thread(target=fn)
-        thread.start()
diff --git a/promise/thread_scheduler.py b/promise/thread_scheduler.py
new file mode 100644
index 0000000..ea9ed41
--- /dev/null
+++ b/promise/thread_scheduler.py
@@ -0,0 +1,7 @@
+from threading import Thread
+
+
+class ThreadScheduler(object):
+    def call(self, fn):
+        thread = Thread(target=fn)
+        thread.start()