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+---
+title: "Code sample"
+date: 2018-01-28T21:48:10+01:00
+anchor: "code"
+weight: 20
+---
+
+```python
+#!/usr/bin/python
+
+# This script will monitor templates folder and automatically compile nunjucks html templates on change
+
+import os
+import sys
+from datetime import datetime
+from subprocess import call
+from time import sleep
+
+try:
+    NUNJUCKS_REPO = sys.argv[1]
+except IndexError:
+    NUNJUCKS_REPO = os.getenv("NUNJUCKS_REPO")
+try:
+    TEMPLATES_DIR = sys.argv[2]
+except IndexError:
+    TEMPLATES_DIR = os.getenv("TEMPLATES_DIR")
+
+FILES = {}
+TIMER = 1
+
+COLOUR_END = '\033[0m'
+COLOUR_GREEN = '\033[92m'
+COLOUR_BLUE = '\033[94m'
+
+
+def check_templates(templates_dir=TEMPLATES_DIR):
+    file_list = os.listdir(templates_dir)
+    for item in file_list:
+        if item.split(".")[-1] == "html":
+            modified = os.path.getmtime(templates_dir + "/" + item)
+            if item in FILES:
+                if FILES[item] != modified:
+                    FILES[item] = modified
+                    precompile(templates_dir, item)
+            else:
+                print (COLOUR_BLUE + item + " is being watched" + COLOUR_END)
+                FILES[item] = modified
+                precompile(templates_dir, item)
+
+
+def precompile(tempates_dir, filename):
+    compiled_filename = filename.replace("html", "js")
+    path_to_js = tempates_dir + "/" + compiled_filename
+    path_to_html = tempates_dir + "/" + filename
+    if os.path.exists(path_to_js):
+        call("rm -f " + path_to_js, shell=True)
+    command = NUNJUCKS_REPO + "/bin/precompile --name " + filename + " " + path_to_html
+    command = command + " >> " + path_to_js
+    call(command, shell=True)
+    print(COLOUR_GREEN + datetime.now().strftime("%X" + " " + filename + " ...OK") + COLOUR_END)
+
+
+if __name__ == '__main__':
+    while True:
+        check_templates()
+        sleep(TIMER)
+```