Vlak 9.6 van Python Probleemoplosser
Gegee 'n arbitrêre tweedimensionele lys:
[
[11, 12, 13, 14, 15],
[21, 22, 23, 24, 25],
[31, 32, 33, 34, 35],
[41, 42, 43, 44, 45],
[51, 52, 53, 54, 55],
]
Stel die elemente wat onder die hoofdiagonaal is, op nul:
[
[11, 12, 13, 14, 15],
[ 0, 22, 23, 24, 25],
[ 0, 0, 33, 34, 35],
[ 0, 0, 0, 44, 45],
[ 0, 0, 0, 0, 55],
]
Gegee 'n sekere URL:
url = 'http://test.com/dir1/dir2/dir3/page.html'
Gegee veranderlikes:
num = 2;
val = 'eee'
Vervang die gids met nommer num
in die URL met die waarde val:
'http://test.com/dir1/eee/dir3/page.html'
