Msg.payload ---> Function Python

General
1

He needs help. I don't know how to pass in node-re Payload to Function Python variable = NewDoc at a later stage in python I replace an existing line in the auto file

[
    {
        "id": "1046fdc339d116e8",
        "type": "function",
        "z": "6aa251ec168de374",
        "name": "Budowanie Emial",
        "func": " \nmsg.NewDoc=5555\n \nreturn msg;",
        "outputs": 1,
        "timeout": "",
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 235,
        "y": 300,
        "wires": [
            [
                "f0e14692235cab36"
            ]
        ],
        "l": false
    },
    {
        "id": "f0e14692235cab36",
        "type": "template",
        "z": "6aa251ec168de374",
        "name": "",
        "field": "payload",
        "fieldType": "msg",
        "format": "python",
        "syntax": "plain",
        "template": "import re\n\n \n\ninput_file = \"C:/Node-red/Automat.js\"\noutput_file = \"C:/Node-red/AutomatN.js\"\n\n# Odczytanie pliku\nwith open(input_file, \"r\") as file:\n    lines = file.readlines()\n\n# Modyfikacja linii 213 (indeksy od 0, więc 213)\nif len(lines) >= 198:\n   lines[197] = lines[197].replace( \"NewDoc\" ,\"NewDoc\"  )\n\nif len(lines) >= 213:\n    lines[212] = lines[212].replace( \"NewDoc\",\"NewDoc\" )\n    \n# Zapisanie zmodyfikowanego pliku\nwith open(output_file, \"w\", encoding=\"utf-8\") as file:\n    file.writelines(lines)\n\nprint(f\"Plik został zapisany jako {output_file}\")\n",
        "output": "str",
        "x": 360,
        "y": 400,
        "wires": [
            [
                "46f9ec1180fbf108"
            ]
        ]
    }
]
2

I have no real idea what you are trying to do but the attached flow replaces "NewDoc" as the 2nd argument in the replace function with the supplied value (also the last function in the script I think should be printf)

[{"id":"1046fdc339d116e8","type":"function","z":"506727cd93754bdb","name":"Budowanie Emial","func":" \nmsg.NewDoc=5555\n \nreturn msg;","outputs":1,"timeout":"","noerr":0,"initialize":"","finalize":"","libs":[],"x":875,"y":4500,"wires":[["f0e14692235cab36"]],"l":false},{"id":"f0e14692235cab36","type":"template","z":"506727cd93754bdb","name":"","field":"payload","fieldType":"msg","format":"python","syntax":"mustache","template":"import re\n\ninput_file = \"C:/Node-red/Automat.js\"\noutput_file = \"C:/Node-red/AutomatN.js\"\n\n# Odczytanie pliku\nwith open(input_file, \"r\") as file:\n    lines = file.readlines()\n\n# Modyfikacja linii 213 (indeksy od 0, więc 213)\nif len(lines) >= 198:\n   lines[197] = lines[197].replace( \"NewDoc\", {{NewDoc}}  )\n\nif len(lines) >= 213:\n    lines[212] = lines[212].replace( \"NewDoc\", {{NewDoc}} )\n    \n# Zapisanie zmodyfikowanego pliku\nwith open(output_file, \"w\", encoding=\"utf-8\") as file:\n    file.writelines(lines)\n\nprintf(\"Plik został zapisany jako {output_file}\")","output":"str","x":1000,"y":4500,"wires":[["9327a3f51d0c5c6d"]]},{"id":"9327a3f51d0c5c6d","type":"debug","z":"506727cd93754bdb","name":"Template Test","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":1220,"y":4500,"wires":[]},{"id":"0351a361b8a67eda","type":"inject","z":"506727cd93754bdb","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":740,"y":4500,"wires":[["1046fdc339d116e8"]]}]
3

Hi,
Thank you printf solved my problem :slight_smile: