# Sample code

try:

    variable = 42  # Example scalar variable

    index = 5  # Example invalid index

    value = variable[index]

    print(value)  # Here, we won't reach this line as an error will be raised

except IndexError:

    print("Invalid index!")

# You might be trying to index a scalar (non-iterable) value:

​

[y[1] for y in y_test]

#  ^ this is the problem

​

# When you call [y for y in test] you are iterating over the values already, so you get a single value in y.

# Your code is the same as trying to do the following:

​

y_test = [1, 2, 3]

y = y_test[0] # y = 1

print(y[0]) # this line will fail

​

# instead you could use a for loop:

​

for y in y_test:

    results.append(..., y)

​

# Example code block

scalar_variable = 5  # A scalar variable

​

# Attempting to index the scalar variable

index = 2

try:

    result = scalar_variable[index]

    print(result)

except IndexError as e:

    print("Error:", e)

​

# Potential solution: Validate the index before accessing the element

if isinstance(scalar_variable, (list, tuple)) and 0 <= index < len(scalar_variable):

    result = scalar_variable[index]

    print(result)

else:

    print("Invalid index or scalar variable is not iterable")