README updated

README.md

@@ -12,11 +12,28 @@ Features
 --------
 
 * Login/Logout
+* Check in/Check out
+
+
+Install
+-------
+
+Either clone this repo and `pip install .` or use one of the provided packages.
+Pay attention: this package needs a working binary of [geckodriver](https://github.com/mozilla/geckodriver).
+You can either proceed in one of the following ways:
+
+* Install the source distribution and put in your `$PATH` the `geckodriver` binary
+  (that can be downloaded [here](https://github.com/mozilla/geckodriver/releases/))
+* Install the wheel for your architecture
+* `pip install .` or `pip install -e .` will download the latest `geckodriver` and
+  put it in a path where the code will be able to find it.
+
+*BEWARE*: the code gives precedence to the `geckodriver` in `$PATH` over that donwloaded.
 
 TODO
 ----
 
- * Check in/out
- * systemd {unit, timer}
- * APIs
- * ...
+ [x] Check in/out
+ [ ] systemd {unit, timer}
+ [ ] APIs
+ [ ] Mailer

bot_z/bot_z.py

@@ -9,16 +9,27 @@ from datetime import datetime, timedelta
 import logging
 import os
 import pkg_resources
+import shutil
+import sys
 import time
 import typing as T
 from urllib.parse import urlparse
 
-os.environ["PATH"] = (
-    os.environ["PATH"] + ":" + pkg_resources.resource_filename(__name__, "bin")
-)
+geckoexe = shutil.which("geckodriver")
+if geckoexe is None:
+    local_path = pkg_resources.resource_filename(__name__, "bin")
+    try:
+        os.stat(os.path.join(local_path, "geckodriver"))
+        os.environ["PATH"] = os.environ["PATH"] + ":" + local_path
+    except FileNotFoundError:
+        print("Missing geckodriver executable in path", file=sys.stderr)
+        raise
 
-from selenium import webdriver as wd
-from selenium.common.exceptions import WebDriverException, NoSuchElementException
+from selenium import webdriver as wd  # noqa
+from selenium.common.exceptions import (
+    WebDriverException,
+    NoSuchElementException,
+)  # noqa
 
 
 logging.basicConfig(