如何在Python中将字符串拆分为单个字符

Question

是否可以为字符串的每个字符设置一个不同的变量？换句话说。。

string='Hello'

#Do some thing to split up the string here

letter_1= #The first character of the variable 'string'
letter_2= #The second character of the variable 'string'
#...
letter_5= #The fifth character of the variable 'string'

谢谢你的回答。