打印具有以“ +”分隔的字符和以“，”分隔的字符串的字符串

Question

I have some variables:

A1 = 'abc'
B1 = 'def'
C1 = 'ghi'

I want to write code that prints A1, B1, C1 in the following format:

a+b+c, d+e+f, g+h+i

so in every string value the chars get separated by a + and the strings themselves are separated by a , .

How can this be accomplished?

Answer 1

In [11]: str.join?
Namespace:  Python builtin
Docstring:
S.join(iterable) -> string

Return a string which is the concatenation of the strings in the
iterable.  The separator between elements is S.

In [12]: ", ".join("+".join(chars) for chars in [A1, B1, C1])
Out[12]: 'a+b+c, d+e+f, g+h+i'