PYTHON-如何从文本文件中提取包含引用标记的句子 例如，我在下面有3个句子，其中1个句子在中间包含引号标记（沃伦和Pereira，1982）< /代码>。引用总是用以下格式括起来：（~string~逗号（，）~space~数字~）

他住在尼达沃尔，今晚我必须在6点钟赶火车去奥斯陆。这个名为BusTUC的系统是建立在经典的CHAT-80系统之上的（Warren和Pereira，1982）。CHAT-80是一种最先进的自然语言系统 其本身的优点令人印象深刻

我使用正则表达式只提取中间的句子，但它会打印所有3个句子。 结果应该是这样的：

这个名为BusTUC的系统是建立在经典的CHAT-80系统之上的（Warren和Pereira，1982）

您可以将文本拆分为一系列句子，然后选择以“）”结尾的句子

您可以将文本拆分为一系列句子，然后选择以“）”结尾的句子

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设置。。。代表利益案件的两句话：

text = "He lives in Nidarvoll and tonight i must reach a train to Oslo at 6 oclock. The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982). CHAT-80 was a state of the art natural language system that was impressive on its own merits."

t2 = "He lives in Nidarvoll and tonight i must reach a train to Oslo at 6 oclock. The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982) fgbhdr was a state of the art natural. CHAT-80 was a state of the art natural language system that was impressive on its own merits."

首先，在引用位于句子末尾的情况下匹配：

p1 = "\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"

p2 = "\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)"

要在引用不在句末时匹配：

p1 = "\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"

p2 = "\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)"

将这两种情况与“|”正则表达式运算符结合使用：

p_main = re.compile("\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"
                "|\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)")

运行：

>>> print(re.findall(p_main, text))
[('The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982).', '')]

>>>print(re.findall(p_main, t2))
[('', 'The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982) fgbhdr was a state of the art natural.')]

在这两种情况下，你都会得到带有引文的句子

python正则表达式和附带的正则表达式页面是一个很好的资源

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干杯

设置。。。代表利益案件的两句话：

text = "He lives in Nidarvoll and tonight i must reach a train to Oslo at 6 oclock. The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982). CHAT-80 was a state of the art natural language system that was impressive on its own merits."

t2 = "He lives in Nidarvoll and tonight i must reach a train to Oslo at 6 oclock. The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982) fgbhdr was a state of the art natural. CHAT-80 was a state of the art natural language system that was impressive on its own merits."

首先，在引用位于句子末尾的情况下匹配：

p1 = "\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"

p2 = "\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)"

要在引用不在句末时匹配：

p1 = "\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"

p2 = "\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)"

将这两种情况与“|”正则表达式运算符结合使用：

p_main = re.compile("\. (.*\([A-za-z]+ .* [0-9]+\)\.+?)"
                "|\. (.*\([A-za-z]+ .* [0-9]+\)[^\.]+\.+?)")

运行：

>>> print(re.findall(p_main, text))
[('The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982).', '')]

>>>print(re.findall(p_main, t2))
[('', 'The system, called BusTUC is built upon the classical system CHAT-80 (Warren and Pereira, 1982) fgbhdr was a state of the art natural.')]

在这两种情况下，你都会得到带有引文的句子

python正则表达式和附带的正则表达式页面是一个很好的资源

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欢呼声

始终是中间句还是引文总是在括号内？并不总是在中间句中，最重要的是引文总是以这种格式的括号（~字符串~逗号，~~空间~~号）：它总是中间句还是引文总是在括号内？并不总是在中间句中，最重要的是引用总是用这种格式（~string~逗号（，）~space~ number~）Thx括起来，所以我不必总是使用正则表达式。但是，如果引用不是在句子的末尾呢？如果周围的句子有这样的字符串“Mr.John”（有点），那么我们不能用“.”来拆分每个句子，这样我就不必总是使用正则表达式了。但是，如果引用不是在句子的末尾呢？如果周围的句子有像“John先生”（有点）这样的字符串，那么我们不能用“.”来拆分每个句子呢