Thank you for your highlight. You helped me to better understand the iteration.
My main misunderstanding was actually the "*" before the "[(TR" ? Le lundi 31 août 2015 01:07:47 UTC+2, Anthony a écrit : > > [TR(*rows) for rows in table] is a list comprehension -- it iterates over > the items in "table" (which are themselves lists) and creates a new list of > TR objects. > > The "*" before the list is Python syntax for argument unpacking, treating > each item in the list as if it were a separate positional argument. > > Note, technically argument unpacking is not necessary for TABLE nor for > TR, as both will alternatively accept a list as the first argument. So, the > code could be changed to: > > TABLE([TR(row) for row in table]) > > > Anthony > > On Sunday, August 30, 2015 at 1:20:38 PM UTC-4, Mamisoa Andriantafika > wrote: >> >> Hi, >> >> Could you explain to me how this code works? >> >> http://web2py.com/books/default/chapter/29/05/the-views#TABLE--TR--TD >> >> >>> table = [['a', 'b'], ['c', 'd']] >> >>> print TABLE(*[TR(*rows) for rows in table]) >> <table><tr><td>a</td><td>b</td></tr><tr><td>c</td><td>d</td></tr></table> >> >> >> I do not completely understand how the loop is created there? >> >> Thank you for your highlight. >> >> Mike >> > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
