Question

I have two lists:

a = ['Peter', '1982', '2000', 'Homeland', '10.34']
b = ['Peter', '1982', '2000', 'Homelnad', '10.32']

and I want comlete diff.
So I want output like this:
[”, ”, ”, ”, ‘10.32’]
So I want just changed values at right place.

Is there some built in function for this? What is fastest way of doing this? Do I have to do it “manually” like this?

i = 0
new_list = []
for item in a:
    if item != b[i]:
        new_row.append(item)
    else:
        new_row.append('')
    i += 1
    new_list.append(new_row)

Answer 1

I don’t think there’s a builtin, but here’s a shorter “manual” way:

In [1]: a = ['Peter', '1982', '2000', 'Homeland', '10.34']

In [2]: b = ['Peter', '1982', '2000', 'Homelnad', '10.32']

In [3]: [be if ae != be else '' for ae, be in zip(a, b)]
Out[3]: ['', '', '', 'Homelnad', '10.32']