python - 获取字符串中的值 - Python

Question

我是 Python 新手，所以我有很多疑问。例如我有一个字符串：

string = "xtpo, example1=x, example2, example3=thisValue"

例如，是否可以在example1和中获取等号旁边的值example3？只知道关键字，不知道后面是=什么？

Answer 1

您可以使用regex：

>>> import re
>>> strs = "xtpo, example1=x, example2, example3=thisValue"
>>> key = 'example1'
>>> re.search(r'{}=(\w+)'.format(key), strs).group(1)
'x'
>>> key = 'example3'
>>> re.search(r'{}=(\w+)'.format(key), strs).group(1)
'thisValue'

Answer 2

为了清楚起见，把事情分开

>>> Sstring = "xtpo, example1=x, example2, example3=thisValue"
>>> items = Sstring.split(',') # Get the comma separated items
>>> for i in items:
...     Pair = i.split('=')  # Try splitting on =
...     if len(Pair) > 1:    # Did split
...         print Pair       # or whatever you would like to do
... 
[' example1', 'x']
[' example3', 'thisValue']
>>>