fixing custom exit and error handling

Author: iansedano

subprocess/README.md

@@ -3,3 +3,5 @@
 Here are supporting materials for the Real Python tutorial, [The `subprocess` Module: Wrapping Programs With Python](https://realpython.com/python-subprocess/).
 
 Be aware that some examples are designed for particular operating systems. The `basics_unix.py` file won't work on Windows, for instance.
+
+[custom_exit.py](custom_exit.py)

subprocess/basics_unix.py

@@ -2,11 +2,6 @@
 
 # LINUX examples
 
-subprocess.run("ls")
-subprocess.run("bash ls")
-subprocess.run(["bash", "ls"])
 subprocess.run(["sh", "ls"])
-subprocess.run(["zsh", "ls"])
-subprocess.run(["ls"])
 
-subprocess.run("python helloworld.py")
+subprocess.run(["ls"], shell=True)

subprocess/custom_exit.py

@@ -1,6 +1,8 @@
 import sys
 
+print(sys.argv)
+
 try:
-    raise SystemExit(sys.argv[1])
+    raise SystemExit(int(sys.argv[1]))
 except IndexError as e:
     raise SystemExit(0) from e

subprocess/error_handling.py

@@ -2,7 +2,7 @@
 
 
 try:
-    subprocess.run(["python", "timer.py", "5"], timeout=10)
+    subprocess.run(["python", "timer.py", "10"], timeout=5, check=True)
 except FileNotFoundError as exc:
     print(f"Process failed because the executable could not be found.\n{exc}")
 except subprocess.CalledProcessError as exc: