Add configurable throttle mechanism

freqtrade/tests/test_misc.py

@@ -0,0 +1,20 @@
+# pragma pylint: disable=missing-docstring
+import time
+
+from freqtrade.misc import throttle
+
+
+def test_throttle():
+
+    def func():
+        return 42
+
+    start = time.time()
+    result = throttle(func, 0.1)
+    end = time.time()
+
+    assert result == 42
+    assert end - start > 0.1
+
+    result = throttle(func, -1)
+    assert result == 42