Question

I’m getting a strange error when I perform a isinstance call on an object in one of my functions:

def subtotals_to_decimal_string(obj):
    """
    Converts subtotals to decimal strings
    """
    if isinstance(obj, list):
        for cr in obj:
            sub = cr['subtotal']
            cr['subtotal'] = Decimal(str(sub)).quantize(Decimal('0.01')).to_eng_string()
        return obj

The error I’m getting is similar to the one from this post: http://bit.ly/MmkObr

The strange part is that I was able to execute this call in a separate python file. What’s going on?

Thanks in advance!

Answer 1

Most probably, you have a global variable named list, which is shadowing the built-in name list. Don’t use names of built-in classes as variable names (or even better, no built-in names at all).