字符串

Python 3中的字符串是str类型。

此处整理和str相关的内容。

多行字符串

一般写法：

normal_multiple_line_str = """line 1
line 2
line 3
...
"""

另外一种写法：

my_very_big_string = (
    "For a long time I used to go to bed early. Sometimes, "
    "when I had put out my candle, my eyes would close so quickly "
    "that I had not even time to say “I’m going to sleep.”"
)

注：多行字符串往往也被用于注释