ValueError: The truth value ...

Hi Folks,
I'm having an issue with a Python tile in Magic ETL , the code works on my machine (pycharm) but throws an error once in Domo (this happens often, what's the difference?)

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al

The goal is to produce a string value surfacing the differences between two strings, which column the difference has come from, and the position of the differences within the columns.

I define a function that achieves this, then use this function in a loop, iterating through the values in two DataFrame columns, extracting the differences, and replacing a temp DataFrame's values with these outputs.

# imports

import the domomagic package into the script
from domomagic import *

import pandas as pd

# read data from inputs into a data frame
df = read_dataframe('Filter Rows')

# Function 

def char_position(d,p):

z = set(d)

y = set(p)

zy_diff = z.symmetric_difference(y)

list_set = list(zy_diff)

l_2 = []

for x in range(len(zy_diff)):

  try:

    l_2.append(f'"{list_set[x]}" - Column_One - position {d.index(list_set[x])+1} ')

  except:

    pass

  try:

    l_2.append(f'"{list_set[x]}" - Column_Two - position {p.index(list_set[x])+1}')

except:

    pass

return l_2

# Getting the original DataFrame's length
weh = range(len(df.index))


# Creating a temp DataFrame using the original DataFrame's length  
uni = pd.DataFrame({'header':'value'},index=weh)

# Executing the function against to DataFrame columns 
# and replacing the temp values in the temp DataFrame  

for x in weh:

  ide = str(df['Column_One'][x]).split()

  pjr = str(df['Column_Two'][x]).split()

  uni.iloc[x] = [char_position(ide,pjr)]


write_dataframe(uni)

^ the code box is greying out everything once published - not intentional.

All help appreciated