ask user before creating a clipboard larger than 5 MB

conversion.py

@@ -0,0 +1,30 @@
+import unittest
+
+
+def humanbytes(bytes: int) -> str:
+    """non-localized conversion of bytes to human readable strings"""
+    powers = {0: 'bytes', 1: 'KB', 2: 'MB', 3: 'GB', 4: 'TB', 5: 'PB', 6: 'EB'}
+    power = 1
+    result = "%d bytes" % bytes
+    while bytes >= 1024 ** power and power in powers:
+        result = "%.3f" % (bytes / (1024 ** power))
+        result = result.rstrip("0")
+        result = result.rstrip(".")
+        result = result + " " + powers[power]
+        power = power + 1
+    return result
+
+
+class TestLogFileModel(unittest.TestCase):
+
+    def test_humanbytes(self):
+        inputs = {
+            0: "0 bytes",
+            1023: "1023 bytes",
+            1024: "1 KB",
+            1048575: "1023.999 KB",
+            1048576: "1 MB",
+        }
+        for input in inputs.keys():
+            actual = humanbytes(input)
+            self.assertEqual(inputs[input], actual)