Head First Python (i)

First, IDLE

1.TAB Completion: Embed some code first, then press the TAB key. Idle will provide some suggestions to help you complete this statement.

2. Fallback code statement: When using the shell, alt-p, fallback to the code statement entered before idle; alt-n, move to the next code statement, if any. Under Mac, change alt to CTRL.

Two, nested list

Output nested list:

Movies = ["The Holy Grail", 1975,"Terry Jones & Terry Gilliam", 91,                 ["Graham Chapman", ["Michael Palin","John Cleese",                        "Terry Gilliam","Eric Idle","Terry Jones"]]]Print(Movies) forXinchMovies:ifisinstance (x,list): forYinchx:ifisinstance (y,list): forZinchy:Print(z)Else:                Print(y)Else:        Print(x)

Improvement: Changing the repeating code into a function

Movies = ["The Holy Grail", 1975,"Terry Jones & Terry Gilliam", 91,                 ["Graham Chapman", ["Michael Palin","John Cleese",                        "Terry Gilliam","Eric Idle","Terry Jones"]]]defprint_lol (a_list): forEach_itemincha_list:ifisinstance (Each_item, list): Print_lol (Each_item)Else:            Print(Each_item) print_lol (Movies)

Third, BIF

Isinstance (), Len (), print ()

Head First Python (i)