分析python split()方法的用法和示例代码

一个字符可以分解成多个子字符，将它们连接在一起后，你在学习编程的时候会想到这一系列的过程吗？今天给大家介绍一下可以达到这种效果的拆分方法。

split()方法的作用

就是将一个字符串用指定的分隔符分隔成指定数量的子串，然后放到一个列表中，然后应用。

实际应用

比如有一篇文章，我们可以把它当成一个字符串，然后用 split() 把它分割成一个单词列表，这样我们就可以把这个列表导出到 Excel，或者其他工具中，然后就可以很容易得到这篇文章的词数和一个词出现的次数，这样我们就可以统计出哪些词是高频词，然后我们就可以用这个数据做很多事情了。

实例展示

long_string="My name is Monkey D Lufy. The man who is going to be the king in the sea."
 
str_list1=long_string.split()
 
str_list2=long_string.split(" ",1)
 
str_list3=long_string.split(" ",16)
 
str_list4=long_string.split(" ",17)
 
str_list5=long_string.split(" ",20)
 
print(str_list1)
 
print(str_list2)
 
print(str_list3)
 
print(str_list4)
 
print(str_list5)

运行结果

["My","name","is","Monkey","D","Lufy.","The","man","who","is","going","to","be","the","king","in","the","sea."]
 
["My","name is Monkey D Lufy. The man who is going to be the king in the sea."]
 
["My","name","is","Monkey","D","Lufy.","The","man","who","is","going","to","be","the","king","in","the sea."]
 
["My","name","is","Monkey","D","Lufy.","The","man","who","is","going","to","be","the","king","in","the","sea."]
 
["My","name","is","Monkey","D","Lufy.","The","man","who","is","going","to","be","the","king","in","the","sea."]

关于split()方法总结

1) split() 有两个参数，第一个参数是分隔符，如果不指定，默认为空格、换行符、制表符作为分隔符，第二个参数是分隔的次数，如果不指定，后面用分隔符与字符串中的分隔符一样多。

2）str_list2指定一个空格作为分隔符，只分隔一次，所以在My和name之间分隔一次，后面不分隔。

3）字符串long_string中一共有17个空格。如果指定的分隔数大于 17，Python 不会报错，否则将使用分隔符的总数进行分隔。

相信大家通过实例演示，已经掌握了关于split()方法技巧了吧，除此之外
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等大家可以点击链接查询了解~