选择Python中的正则表达式

Question

我有一根线，是

"contributors_enabled": false, "geo_enabled": false, "created_at": "Fri Nov 11 15:38:06 +0000 2016"}, "text": "Facts On Managed Forex Trading htps:////t.co////E4cxCvvjD #forex #binaryoptions #cryptocurrency #stockmarket", "timestamp_ms": "1509073455803",.

我将使用正则表达式，选择文本：

Facts On Managed Forex Trading htps:////t.co////E4cxCvvjD #forex #binaryoptions #cryptocurrency #stockmarket

它在"text“：”and“之前，”timestamp_ms“之后：

能收集这些文字吗？

Answer 1

虽然从字符串中看，您的整个字符串可能会被解析，因为它看起来是JSON。但是，由于您正在寻找regex相关的解决方案，我希望下面的工作适合您。

import re

pattern = '"text": "(.*), "timestamp_ms"'

str = """
"contributors_enabled": false, "geo_enabled": false, "created_at": "Fri Nov 11 15:38:06 +0000 2016"}, "text": "Facts On Managed Forex Trading htps:////t.co////E4cxCvvjD #forex #binaryoptions #cryptocurrency #stockmarket", "timestamp_ms": "1509073455803",.
"""

print re.findall(pattern, string=str)[0]

输出：

Facts On Managed Forex Trading htps:////t.co////E4cxCvvjD #forex #binaryoptions #cryptocurrency #stockmarket"

Answer 2

可能吗？是的。

def text_scrap(text, start, end):
    """This function returns the data between start and end."""
    _,_,rest = text.partition(start)
    result,_,_ = rest.partition(end)
    return result

my_text = "contributors_enabled": false, "geo_enabled": false, "created_at": "Fri Nov 11 15:38:06 +0000 2016"}, "text": "Facts On Managed Forex Trading htps:////t.co////E4cxCvvjD #forex #binaryoptions #cryptocurrency #stockmarket", "timestamp_ms": "1509073455803",.

data_scrapped = text_scrap(my_text, start=' "text": "', end="timestamp_ms") # use our new shiny function
print(data_scrapped)

好主意？可能不是。

您的代码是dict，因此您可以更容易地访问dict的“文本”键。请查看这以了解有关dicts的知识。