=>在Google Python示例中

2019年8月3日 180次阅读

所以我是
Python的新手,并试图通过Google Python在线课程[
https://developers.google.com/edu/python/regular-expressions]

我正在运行Python 2.7.5,当我尝试这个例子时,它与=>有问题.

我已经尝试搜索谷歌的解释,但已经空了.任何帮助,将不胜感激.

错误信息如下.

sandbox$./re-test.py 
  File "./re-test.py", line 8
    match = re.search(r'iii', 'piiig') =>  found, match.group() == "iii"
                                        ^

该计划的代码是：

#!/usr/bin/python

import re

## Search for pattern 'iii' in string 'piiig'.
## All of the pattern must match, but it may appear anywhere.
## On success, match.group() is matched text.
match = re.search(r'iii', 'piiig') =>  found, match.group() == "iii"
match = re.search(r'igs', 'piiig') =>  not found, match == None

## . = any char but \n
match = re.search(r'..g', 'piiig') =>  found, match.group() == "iig"

## \d = digit char, \w = word char
match = re.search(r'\d\d\d', 'p123g') =>  found, match.group() == "123"
match = re.search(r'\w\w\w', '@@abcd!!') =>  found, match.group() == "abc"

最佳答案 作者正在使用=>描述结果;它不是Python语法的一部分.

考虑它写如下,其意图可能更清楚：

match = re.search(r'iii', 'piiig')  #=> found, match.group() == "iii"
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