L = [ ['Apple', 'Google', 'Microsoft'], ['Java', 'Python', 'Ruby', 'PHP'], ['Adam', 'Bart', 'Lisa'] ] print(L[0][0]) print(L[1][1]) print(L[2][2])
'Apple' 'Python' 'Lisa'
for i in range(len(L)): for j in range(len(L[i])): print(L[i][j]) j=j+1 i=i+1
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独具一格5
L = [ ['Apple', 'Google', 'Microsoft'], ['Java', 'Python', 'Ruby', 'PHP'], ['Adam', 'Bart', 'Lisa'] ] print(L[0][0]) print(L[1][1]) print(L[2][2])