Move some code to functions

netrun.py

@@ -2,19 +2,39 @@ import requests
 import subprocess
 import sys
 
+
+def launch(command, data):
+    if isinstance(command, str):
+        command = [command]
+    elif isinstance(command, tuple):
+        command = list(command)
+    elif not isinstance(command, list):
+        raise ValueError("`command` must be `list`, `tuple`, or `str`")
+
+    return subprocess.run(command, input=data)
+
+
+def yn(question, options="yn"):
+    options = options.lower()
+
+    options_display = f"[{'/'.join(options)}]"
+    full_question = f"{question} {options_display} "
+
+    response = "WILL NEVER OCCUR IN OPTIONS"
+    while not response in options:
+        response = input(full_question).lower().strip()[0]
+
+    return response
+
+
 url = sys.argv[1]
 
 content = requests.get(url).content
 
-subprocess.run(["less"], input=content)
+launch("less", content)
 
-while True:
-    response = (
-        input("Do you want to run this script? [y/n] ").lower().strip()[0]
-    )
-    if response == "y":
-        subprocess.run(["bash"], input=content)
-        break
-    elif response == "n":
-        print("Script not run.")
-        break
+response = yn("Do you want to run this script?")
+if response == "y":
+    launch("bash", content)
+else:
+    print("Script not run.")