python-for其他用法補充

 grade_list = [("小雞", 100), ("兩大類", 0), ("小喵", 80), ("小蟲", 60)]

for item in grade_list:

    print (item[0], item[1])

print ('---------------------')

# 可以直接改寫

for (name, grade) in grade_list:

    print (name, grade)

print ('---------------------')

# 或是這樣

for name, grade in grade_list:

    print (name, grade)

    

print ('---------------------')

num_list = [1, 2, 3]

for num in num_list:

    print (num)

    num_list.remove(num)

print (num_list)

print ('---------------------')

num_list = [1, 2, 3]

for num in num_list[:]:

    print (num)

    num_list.remove(num)

print (num_list)

print ('---------------------')

fruits = ['apple', 'banana', 'orange']

for i in fruits:

    print(i)

print ('---------------------')

fruits = ['apple', 'banana', 'orange']

for i in range(len(fruits)):

    print(fruits[i])

print ('---------------------')

# 反轉

fruits = ['apple', 'banana', 'orange']

for i in reversed(fruits):

    print(i)

output如下

D:\>python test.py

小雞 100

兩大類 0

小喵 80

小蟲 60

---------------------

小雞 100

兩大類 0

小喵 80

小蟲 60

---------------------

小雞 100

兩大類 0

小喵 80

小蟲 60

---------------------

1

3

[2]

---------------------

1

2

3

[]

---------------------

apple

banana

orange

---------------------

apple

banana

orange

---------------------

orange

banana

apple