我有一個(gè)名為 的 Twitter 主題標(biāo)簽列表li。我想top_10從中制作一個(gè)最常見(jiàn)的標(biāo)簽的新列表。到目前為止我已經(jīng)完成了（#）：li = ['COVID19', 'Covid19', 'covid19', 'coronavirus', 'Coronavirus',...]tag_counter = dict()for tag in li:? ? if tag in tag_counter:? ? ? ? ?tag_counter[tag] += 1? ? else:? ? ? ? ?tag_counter[tag] = 1?popular_tags = sorted(tag_counter, key = tag_counter.get, reverse = True)top_10 = popular_tags[:10]print('\nList of the top 10 popular hashtags are :\n',top_10)由于主題標(biāo)簽不區(qū)分大小寫(xiě)，我想在創(chuàng)建我的tag_counter.
4 回答
鴻蒙傳說(shuō)
TA貢獻(xiàn)1865條經(jīng)驗(yàn) 獲得超7個(gè)贊
collections.Counter從標(biāo)準(zhǔn)庫(kù)中使用
from collections import Counter
list_of_words = ['hello', 'hello', 'world']
lowercase_words = [w.lower() for w in list_of_words]
Counter(lowercase_words).most_common(1)
退貨：
[('hello', 2)]
斯蒂芬大帝
TA貢獻(xiàn)1827條經(jīng)驗(yàn) 獲得超8個(gè)贊
首先規(guī)范化數(shù)據(jù)，使用 lower 或 upper。
li = ['COVID19', 'Covid19', 'covid19', 'coronavirus', 'Coronavirus']
li = [x.upper() for x in li] # OR, li = [x.lower() for x in li]
tag_counter = dict()
for tag in li:
if tag in tag_counter:
tag_counter[tag] += 1
else:
tag_counter[tag] = 1
popular_tags = sorted(tag_counter, key = tag_counter.get, reverse = True)
top_10 = popular_tags[:10]
print('\nList of the top 10 popular hashtags are :\n',top_10)
叮當(dāng)貓咪
TA貢獻(xiàn)1776條經(jīng)驗(yàn) 獲得超12個(gè)贊
見(jiàn)下文
from collections import Counter
lst = ['Ab','aa','ab','Aa','Cct','aA']
lower_lst = [x.lower() for x in lst ]
counter = Counter(lower_lst)
print(counter.most_common(1))
互換的青春
TA貢獻(xiàn)1797條經(jīng)驗(yàn) 獲得超6個(gè)贊
您可以使用Counter收藏庫(kù)
from collections import Counter
li = ['COVID19', 'Covid19', 'covid19', 'coronavirus', 'Coronavirus']
print(Counter([i.lower() for i in li]).most_common(10))
輸出：
[('covid19', 3), ('coronavirus', 2)]
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