Joining a list of strings

Join is the opposite of split: 
>>> line1 = "iteration 12:    eps= 1.245E-05"
>>> line1.split()
['iteration', '12:', 'eps=', '1.245E-05']
>>> w = line1.split()
>>> ' '.join(w)  # join w elements with delimiter ' '
'iteration 12: eps= 1.245E-05'
Any delimiter text can be used: 
>>> '@@@'.join(w)
'iteration@@@12:@@@eps=@@@1.245E-05'

previousnexttable of contents