Python遍歷列表的幾種方法

for循環

list_test = [1, 3, 6, 2, 5]
for i in list_test:
    print(i)

while循環

list_test = [1, 3, 6, 2, 5]
i = 0
while i < len(list_test):
    print(list_test[i])
    i += 1

enumerate函數

list_test = [1, 3, 6, 2, 5]
for index, value in enumerate(list_test):
    print(index, value)

range函數

list_test = [1, 3, 6, 2, 5]
for i in range(len(list_test)):
    print(i, list_test[i])
# range()函數返回的是一個可迭代對象，不是列表

iter函數

list_test = [1, 3, 6, 2, 5]
for i in iter(list_test):
    print(i)

附：

def test(lst: list):
    # 遍歷列表每個元素並統計比其小的元素數量
    j = []
    for i in lst:
        k = 0
        for m in lst:
            if i > m:
                k += 1
        j.append(k)
    return j