Added convenience function to pop N items from the end of a list

src/common.py

@@ -2,6 +2,7 @@ import os
 import requests
 import streamlit as st
 
+from random import getrandbits
 from typing import List, Tuple
 
 
@@ -10,6 +11,28 @@ img_dir = os.path.join(os.path.dirname(__file__), '..', 'img')
 config_dir = os.path.join(os.path.dirname(__file__), '..', 'config')
 
 
+def random_true_false() -> bool:
+    """
+    Utility to get a random True or False to make it clear what I am doing
+    and not peppering getrandbits around the codebase
+    """
+    return bool(getrandbits(1))
+
+
+def pop_n(items: List, n: int) -> List:
+    """
+    Utility to pop a certain number from the end of a list.
+    Modifies the original list and returns the popped items.
+    Automagically pops <n if the list does not contain n items
+    """
+    if len(items) < n:
+        n = len(items)
+    popped = []
+    for _ in range(n):
+        popped.append(items.pop())
+    return popped[::-1]
+
+
 def hf_api_token() -> str:
     """
     Utility single access point to look up the hugging face access token.