Question

I should define a function pad_with_n_chars(s, n, c) that takes a
string ‘s’, an integer ‘n’, and a character ‘c’ and returns
a string consisting of ‘s’ padded with ‘c’ to create a
string with a centered ‘s’ of length ‘n’. For example,
pad_with_n_chars(”dog”, 5, ”x”) should return the
string “xdogx“.

Answer 1

With Python2.6 or better, there’s no need to define your own function; the string format method can do all this for you:

In [18]: '{s:{c}^{n}}'.format(s='dog',n=5,c='x')
Out[18]: 'xdogx'

Using f-string: f'{"dog":x^5}'