1. 取消 \ 轉義

# 轉義
>>> print('C:\some\name')  # here \n means newline!
C:\some
ame
# 取消轉義
>>> print(r'C:\some\name')  # note the r before the quote
C:\some\name

2. 拆分長字符串

>>> text = ('Put several strings within parentheses '
...         'to have them joined together.')
>>> text
'Put several strings within parentheses to have them joined together.'
>>>'Py' 'thon'
Python 

這項功能只能用于兩個字面值，不能用于變量或表達式：

>>> prefix = 'Py'
>>> prefix 'thon'  # can't concatenate a variable and a string literal
  File "<stdin>", line 1
    prefix 'thon'
                ^
SyntaxError: invalid syntax

3. 列表的淺拷貝

>>> squares = [1, 4, 9, 16, 25]
>>> squares[:]
[1, 4, 9, 16, 25]

4. 循環中的else

循環語句支持 else 子句；
for循環中，可迭代對象中的元素全部循環完畢時
while循環的條件為假時，執行該子句；
break語句終止循環時，不執行該子句。 請看下面這個查找素數的循環示例：

>>> for n in range(2, 10):
...     for x in range(2, n):
...         if n % x == 0:
...             print(n, 'equals', x, '*', n//x)
                # break后不會執行else
...             break
...     else:
...         # loop fell through without finding a factor
...         print(n, 'is a prime number')
...
2 is a prime number
3 is a prime number
4 equals 2 * 2
5 is a prime number
6 equals 2 * 3
7 is a prime number
8 equals 2 * 4
9 equals 3 * 3