Python 3.x-使用sum函数连接列表中的字符串

Question

x= ['Good', 'morning'] # example list of strings

I have to use sum(x) to concatenate both and print (x). I'm having trouble converting the list into integers for the sum function to work.

>>>print (sum(x))
'Goodmorning'

Answer 1

This doesn't work. sum() is for adding up numbers, not strings. Use ''.join() instead.

>>> ''.join(['good ', 'morning'])
'good morning'

Answer 2

From help(sum)

Help on built-in function sum in module builtins:

sum(...)
    sum(iterable[, start]) -> value

    Return the sum of an iterable of numbers (NOT strings) plus the value
    of parameter 'start' (which defaults to 0).  When the iterable is
    empty, return start.

As @kevin suggested, use join function.