Question

基本上，我想保留像'ss'这样的双字母并删除'iiiiiiiiiiiiiiii'

我正在清理数据以进行文本分析。

s_input = "guess who just got shoes boiiiiiiiiiiiiii"

print(''.join(i for i, _ in itertools.groupby(s_input ))) #this also takes out the 'ss' in guess

>"guess who just got shoes boi"

目的是获取以下内容 “猜谁刚穿上鞋子博伊”

注意，“猜测”保留了“ ss”

Answer 1

您可以这样做：

print(''.join(i if len(g) > 2 else ''.join(g) 
              for i, g in itertools.groupby(s_input)
              for g in [list(g)]))

但是那将是相当糟糕的。

Answer 2

对于复杂的生成器，我喜欢编写一个生成器函数：

import itertools

def kill_long_dups(s):
    for key, group in itertools.groupby(s):
        group = list(group)
        if len(group) > 2:
            yield key
        else:
            yield from group


s_input = "guess who just got shoes boiiiiiiiiiiiiii"
print(''.join(kill_long_dups(s_input)))

Answer 3

您可以使用re.sub完成此操作

返回通过替换最左边的非重叠而获得的字符串替换repl在字符串中出现模式的情况。如果找不到模式，字符串不变。代表可以是字符串或函数；如果是字符串，则其中的任何反斜杠都将转义已处理。

import re

s_input = "guess who just got shoes boiiiiiiiiiiiiii"
print(re.sub(r'(\w)\1{2,}',r'\1',s_input))

输出：

guess who just got shoes boi

如何删除重复的字母并在python中保留重复项？

3 个答案: