python 遍歷數組的方法

python 遍歷數組有兩種方法，一種是使用for in 來遍歷數組，一種是先獲得數組的長度，然后根據索引號遍歷數組，同時輸出索引號。

for in 遍歷數組方法：

colours = ["red","green","blue"]

for colour in colours:
    print colour

red
green
blue

遍歷數組方法二：

colours = ["red","green","blue"]
 
for i in range(0, len(colours)):
    print i, colour[i]
 
0 red
1 green
2 blue