On Thursday, 25 June 2015 22:07:42 UTC-3, fl wrote: > Hi, > > I read Ned's tutorial on Python. It is very interesting. On its last > example, I cannot understand the '_' in: > > > > board=[[0]*8 for _ in range(8)] > > > I know '_' is the precious answer, but it is still unclear what it is > in the above line. Can you explain it to me?
'_' is the previous answer ONLY when using the read-eval-print-loop interpreter. Here, it is the "name" of a variable; since we don't care about the particular name (it is used just for looping a fixed number of times), the common practice of using '_' has been used. As you will have noted (since it confused you), '_' doesn't seem to designate anything of interest - unlike a variable name like 'string_index' or 'character', etc. Sometimes, people will use the name "dummy" instead of '_', with the same idea in mind. > > > Thanks, -- https://mail.python.org/mailman/listinfo/python-list
