Question

我想要的是删除其中包含两个以上连续元音的单词。所以输入：

s = " There was a boat in the rain near the shore, by some mysterious lake"

输出：

[boat,rain,near,mysterious]

所以这是我的代码。我只是想知道是否有更好的方法来做到这一点或这是否足够有效。如果你能用python dict或列表做到这一点好吗？ :)我是python的新手，所以是的。 :)评论会很好。

def change(s):
vowel = ["a","e","i","o","u"]
words = []
a = s[:].replace(",","").split()
for i in vowel:
    s = s.replace(i, "*").replace(",","")
for i,j in enumerate(s.split()):
    if "**" in j:
        words.append(a[i])
return words

Answer 1

或者，您可以始终使用正则表达式和列表推导来获取单词列表：

>>> import re
>>> [x for x in s.split() if re.search(r'[aeiou]{2}', x)]
['boat', 'rain', 'near', 'mysterious']

s.split()将句子拆分为单词列表。表达式[x for x in s.split()]依次考虑此列表中的每个单词。

表达式的re.search(r'[aeiou]{2}', x)部分在每个单词中搜索来自组[aeiou]的两个连续字母。只有找到两个连续的元音才会将单词放入新列表中。

Answer 2

使用套装：

使用set.intersection的第一种方法只能找到不相同的连续对，因此oo不匹配：

s = " There was a boat in the rain near the shore, by some mysterious lake"
vowels = "aeiouAEIOU"
print([x for x in s.split() if any(len(set(x[i:i+2]).intersection(vowels))==  2 for i in range(len(x))) ])
['boat', 'rain', 'near', 'mysterious']

方法2使用set.issubset，因此现在相同的连续对将被视为匹配。

使用set.issubset使用yield from python 3语法的函数，这可能更合适，实际上是为了捕获重复的相同元音：

vowels = "aeiouAEIOU"
def get(x, step):
    yield from (x[i:i+step] for i in range(len(x[:-1])))

print([x for x in s.split() if any(set(pr).issubset(vowels) for pr in get(x, 2))])

或者再次在单个列表comp：

print([x for x in s.split() if any(set(pr).issubset(vowels) for pr in (x[i:i+2] for i in range(len(x[:-1]))))])

最后让元音成为一组并检查它是否是任何一对字符的set.issuperset：

vowels = {'a', 'u', 'U', 'o', 'e', 'i', 'A', 'I', 'E', 'O'}


def get(x, step):
    yield from (x[i:i+step] for i in range(len(x[:-1])))

print([x for x in s.split() if any(vowels.issuperset(pr) for pr in get(x, 2))])

Answer 3

使用成对迭代：

from itertools import tee

def pairwise(iterable):
    a, b = tee(iter(iterable))
    next(b)
    return zip(a,b)

vowels = 'aeiouAEIOU'
[word for word in s.split() if any(
        this in vowels and next in vowels for this,next in pairwise(word))]

Answer 4

改为使用正则表达式：

import re

s = 'There was a boat in the rain near the shore, by some mysterious lake'
l = [i for i in s.split(' ') if re.search('[aeiou]{2,}', i)]

print ' '.join(l) # back to string

Answer 5

改用产品：

from itertools import product

vowels = 'aiueo'
comb = list(product(vowels, repeat=2))
s = " There was a boat in the rain near the shore, by some mysterious lake"


def is2consecutive_vowels(word):
    for i in range(len(word)-1):
        if (word[i], word[i+1]) in comb:
            return True
    return False

print [word for word in s.split() if is2consecutive_vowels(word)]
# ['boat', 'rain', 'near', 'mysterious']

或者如果您不需要使用任何外部库：

vowels = 'aeiou'

def is2consecutive_vowels2(word):
    for i in range(len(word)-1):
        if word[i] in vowels and word[i+1] in vowels:
            return True
    return False

print [word for word in s.split() if is2consecutive_vowels2(word)]
# ['boat', 'rain', 'near', 'mysterious']

这个比正则表达式解决方案更快！

Answer 6

tbl <- tbl %>% group_by(profession) %>% mutate(rank = ntile(10))

删除其中包含2个连续元音的单词

6 个答案: