Use a lambda rather than the defined function.

Author: AlexanderWells-diamond

docs/examples/example_read_from_ioc.py

@@ -6,7 +6,4 @@
 print(caput("MY-DEVICE-PREFIX:AO", "999"))
 print(caget("MY-DEVICE-PREFIX:AO"))
 
-def print_val(value: float):
-    print(value)
-
 softioc.interactive_ioc(globals())

docs/how-to/read-data-from-ioc.rst

@@ -24,8 +24,8 @@ We will read data from that IOC using this script:
 From the interactive command line you can now use the ``caget`` and ``caput`` functions to operate on 
 the PVs exposed in the IOC. Another interesting command to try is::
 
-    camonitor("MY-DEVICE-PREFIX:AI", print_val)
+    camonitor("MY-DEVICE-PREFIX:AI", lambda val: print(val))
 
 
-You should observe the value of ``AI`` being printed out, once per second, every time the PVs value
+You should observe the value of ``AI`` being printed out, once per second, every time the PV value
 updates.