Added post

content/blog/pythonsetinterval.md

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+---
+title: "Python: Set Interval"
+date: 2020-02-25T21:34:03-05:00
+draft: false
+tags: [ "python" ]
+---
+
+Javascript has a function called `setInterval` which given a length of time $T$ and a callback function, it will perform that function every $T$ milliseconds. For example, to print "Hello, World!" every 5 seconds:
+
+```javascript
+setInterval(function() {
+    console.log("Hello, World!")
+}, 5 * 1000)
+```
+
+Wouldn't it be nice if Python had a similar functionality? Well thanks to [right2clicky](https://stackoverflow.com/a/48741004), there's a nice and quick way to implement one.
+
+```python
+from threading import Timer
+
+class Repeat(Timer):
+    def run(self):
+        while not self.finished.wait(self.interval):
+            self.function(*self.args, **self.kwargs)
+```
+
+Since `self.finished.wait` only returns `True` when the Event `self.finished` is set to true, the thread will keep waiting and calling the function for the set interval time period.
+
+The same post has a usage example:
+
+```python
+from time import sleep
+
+t = Repeat(1.0, lambda: print("Hello, World!"))
+t.start()
+sleep(5)
+t.cancel()
+```
+