Python exec external file with params demo

# This is the "plugin" file to be executed. Copy and paste it as "amazingPlugin.py"
# It expects the variables: 'data' (string) and 'result' (dictionary)
# 'result' will contain the entries 'first_char', 'last_char', 'length'

result["first_char"] = data[0]
result["last_char"] = data[-1]
result["length"] = len(data)

#---------------------------------------------------------------------------------------

# This is the demo code. Copy and paste it as a different .py file in the same directory

s = "Hello plugin!"

with open("amazingPlugin.py") as f:
    plugin = f.read()
f.close()


return_dict = {"data": s, "result" : {}}
try:
    exec(plugin, {}, return_dict)
except:
    print("something bad happened!")

print("Plugin processing result:", return_dict)