Improve the error raised when the new dependency is missing

diff --git a/updateHostsFile.py b/updateHostsFile.py
index 60fd80d7a2a9d697f7e22ed835f4ae8eb52770c2..2c50b4c370742cb53c131607d0d096672b58e24b 100644 (file)
--- a/updateHostsFile.py
+++ b/updateHostsFile.py
@@ -21,14 +21,20 @@ import tempfile
 import time
 from glob import glob
 
-import requests
-
 # Detecting Python 3 for version-dependent implementations
 PY3 = sys.version_info >= (3, 0)
 
 if not PY3:
     raise Exception("We do not support Python 2 anymore.")
 
+
+try:
+    import requests
+except ModuleNotFoundError:  # noqa: F821
+    raise ModuleNotFoundError("This project's dependencies have changed. The Requests library ("  # noqa: F821
+                              "https://requests.readthedocs.io/en/master/) is now required.")
+
+
 # Syntactic sugar for "sudo" command in UNIX / Linux
 if platform.system() == "OpenBSD":
     SUDO = ["/usr/bin/doas"]