Update 'get-json-key.py'

get-json-key.py

@@ -5,6 +5,9 @@ USAGE:
     [stdin] | ./get-json-key.py [KEY]..
 
 KEY can be a string key (object) or integer index (array), the program will try both
+
+Example: `echo '{"abc":[null,{"zzz":"hello world"}]}' | ./get-json-key.py abc 1 zzz` # -> hello world
+
 """
 
 import fileinput, sys, json, functools
@@ -30,10 +33,9 @@ def main(keys: List[str]) -> None:
             raise e
         print(val)
 
+        
 if __name__ == '__main__':
     if len(sys.argv) < 2:
         print(HELP, file=sys.stderr)
         sys.exit(1)
-    main(sys.argv[1:])
-
-
+    main(sys.argv[1:])