元组是计数器中的字典键 - 我如何使它成为一个字符串？

Question

I am new to Python. I used collections.Counter to count the most frequent bigrams in a text:

import sys, codecs
import nltk, collections
from nltk.util import ngrams

InputFile = codecs.open("testin.txt", 'r', 'utf-8')
text=InputFile.read().lower()
tokens = text.split() 
bi_tokens = ngrams(tokens, 2)
bi_freq = collections.Counter(bi_tokens)

If I use:

for row in bi_freq.most_common(100):
    print (row)

The result appears as:

(('star', 'wars'), 29)
(('blu', 'ray'), 21)

If I use:

for row in bi_freq.most_common(1000):
    print (row[0], "\t", row[1])

The result appears a bit cleaner as:

('star', 'wars')     29
('blu', 'ray')   21

I would like to get to:

star wars    29
blu ray      21

which I would import into a spreadsheet in two columns with tab as a separator.

So my question is: how do I access each tuple value, when the tuple is a key in a dictionary, so that I can concatenate them into a string? Thanks in advance.

Edit: I did this:

for row in bi_freq.most_common(100):
    wordlist_in_bigram = row[0]
    print (wordlist_in_bigram[0],wordlist_in_bigram[1],"\t", row[1])

And the result seems to be what I wanted:

star wars    29
blu ray      21

Is this a good solution? Thanks

Answer 1

Use join() to create a delimited string from a sequence.

for bigram, c in b_freq.most_common(1000):
    print(" ".join(bigram), c)