語法糖？

指計算機語言中添加的某種語法，這種語法對語言的功能沒有影響，但是更方便程序員使用。 語法糖讓程序更加簡潔，有更高的可讀性。

>>> a = 1
>>> b = 2
>>> a, b = b, a
>>> a
2
>>> b
1

>>> seasons = ['Spring', 'Summer', 'Fall', 'Winter']
>>> for i,st in enumerate(seasons):
...     print(i,st)
... 
0 Spring
1 Summer
2 Fall
3 Winter

>>> seasons = ['Spring', 'Summer', 'Fall', 'Winter']
>>> print(','.join(seasons))
Spring,Summer,Fall,Winter
>>> print(' '.join(seasons))
Spring Summer Fall Winter

>>> with open('history.txt') as f:
...     data = f.read()
... 
>>> data

>>> [i*2 for i in range(5)]
[0, 2, 4, 6, 8]

>>> name, gender, age, email = 'vttalk', 'female', 30, 'python@qq.com'
>>> name
'vttalk'
>>> age
30