Passing List as Input Parameter for Python

Help
1

Another question! I have a Python script that takes two parameters, a string and a list of strings containing two names.

def send_message(text,names = []):

in order to send a message to two people. I’m automating this using UiPath and have a list containing the two names that I want to send the ‘text’ to, but I am getting an error saying

Error invoking Python method —> RemoteException wrapping System.ServiceModel.CommunicationException: There was an error while trying to serialize parameter http://UiPath.Python.Host:args. The InnerException message was 'Type ‘System.Collections.Generic.List`1[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]’ with data contract name ‘ArrayOfstring:http://schemas.microsoft.com/2003/10/Serialization/Arrays’ is not expected.

when I try to pass the list I’ve created as an input parameter. Am I doing something wrong when I pass the list into Python? Thanks!

2

I’m able to pass the parameters perfectly @sunya

Can you post screenshot of how you are passing the parameters to the code and the code you have?

1 Like
3

Yes: here is how I’m passing in the input parameters:
image
Here is the ‘name_list’ that is being passed in:

image
image725×33 2.32 KB

And here is a sample of the Python I am using:

def send_text(text,rooms = []):
wb.send_user_message(text= text, file_list=file_list, markdown=markdown)
for name in rooms:
wb.send_message(text= text, file_list=file_list, markdown=markdown, name=name)

It should be passing in the two names as the ‘name_list’, then sending messages to the people inside of that list.

4

I just realized I’m trying to pass a String in, but it’s an array. Fixed it!

5

how to pass list obj?

6

pythonD1
Type argument must be string List?

7

Get Python Object is which the value you are trying to return in python code @KarthikBallary

So, whatever the type you are returning in python, change it to that type and get the object

8

if I do so I am getting python object error

9

Can you post what you are trying to return from python and what is the type of type argument in studio :slight_smile:

10

tolearnPy.zip (15.5 KB)
Pls help asap

11

pythonD4

12

pythonD1 pythonD2 PythonD3

13

The file is not even running for me @KarthikBallary

As it is working for you, try this
loop through the list in the python code itself and then add each value in the list to a string and return that string :slight_smile:

As I understand, you are trying to remove the duplicates in the code, that you can do using the existing activities by adding all the values to a array string type

14

I forgot to add arguments in python method. add it and run.
I need to pass list for other purpose. each value not a good idea. if it is possible to pass list

15

@HareeshMR: Pls send any sample file if you have

16

@sunya: What is the solution?