Python 基础一（String 处理）

最新推荐文章于 2025-03-11 11:30:32 发布

最新推荐文章于 2025-03-11 11:30:32 发布 · 149 阅读

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本文介绍了Python中字符串的基本操作，包括引号使用、字符串重复及子字符串提取等。文章通过实例展示了如何进行字符串的拼接、重复及如何获取子字符串。

Python 里面 String的处理：

1.基本的‘和“处理，不用多说，直接上例子：

>>> 'spam eggs'
'spam eggs'
>>> 'doesn\'t'
"doesn't"
>>> "doesn't"
"doesn't"
>>> '"Yes," he said.'
'"Yes," he said.'
>>> "\"Yes,\" he said."
'"Yes," he said.'
>>> '"Isn\'t," she said.'
'"Isn\'t," she said.'

2. String 对象可以被简单重复

>>> word = 'Help' + 'A'
>>> '<' + word*5 + '>'
'<HelpAHelpAHelpAHelpAHelpA>'

3.python的substring 比较好用。index是从0开始，像word[0]

>>> word = 'Help' + 'A'
>>> word[4]
'A'
>>> word[0:2]
'He'
>>> word[2:4]
'lp'
>>> word[:2]    # The first two characters
'He'
>>> word[2:]    # Everything except the first two characters
'lpA'

但对String里面的substring直接赋值却不行。