Correct formatting to send a list in Python as a parameter to the Google Web App in order to send the data to Google Sheets

Question:

I have a Python code in which I want to pass a DataFrame Pandas as a parameter and a URL also as a parameter in my request to the Web App of Google Apps Script:

import pandas as pd
import requests

UAGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36'
headers = {
    'User-Agent': UAGENT
    }

df = pd.DataFrame({'Col A': [1,2,3,4,5],'Col B': ['A','B','C','D','E']})
df_list = df.values.tolist()

url = 'https://stackoverflow.com'

webAppsUrl = "https://script.google.com/macros/s/XXXXXXXX/exec"
params = {
    'pylist': df_list,
    'okgo': url
}
web_app_response = requests.get(
    webAppsUrl, headers=headers, params=params, timeout=360
)

In my Web App code I tried to send it to the spreadsheet like this:

function doGet(e) {
    var pylist = e.parameter.pylist;
    var sheet = SpreadsheetApp.getActive().getSheetByName('All Python');
    sheet.getRange(1, 1, pylist.length, pylist[0].length).setValues(pylist);

My expected result in Google Sheets All Python page:

1 A
2 B
3 C
4 D
5 E

But I received a Bad Request Error 400 when making the request.

In this case, what is the correct way to achieve what I want?

Asked By: Digital Farmer

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Source

Answers:

From your question, I cannot know your expected result. But, I think that the reason for your current issue is due to that e.parameter.pylist is an object. When your python request is used, e.parameter.pylist is {"okgo":"###","pylist":"###"}. When this value is used for setValues(pylist), an error like The parameters (String) don't match the method signature for SpreadsheetApp.Range.setValues. occurs. I thought that this might be the reason for your current issue.

If you want to put the values without the error, how about the following modification?

Modified script:

In this modification, doGet is modified as follows.

From:

var pylist = e.parameter.pylist;

To:

var header = ['pylist', 'okgo'];
var pylist = [header, header.map(h => e.parameters[h].join(","))];

or, if you want to put both keys and values in the row, how about the following modification?

var pylist = Object.entries(e.parameters).map(([k, v]) => [k, v.join(",")]);

Note:

Added:

From your updated question, the reason for your current issue is due to that e.parameter.pylist is an object. So, how about the following modification? In this modification, df_list is sent as a string.

Google Apps Script side:

Please modify as follows.

From:

var pylist = e.parameter.pylist;

To:

var pylist = JSON.parse(e.parameter.pylist);

Python script:

Please modify as follows.

From:

params = {
    'pylist': df_list,
    'okgo': url
}

To:

Please include import json.

params = {"pylist": json.dumps(df_list), "okgo": url}
Answered By: Tanaike