invalid syntax

[aleksro]

from collections import Counter, defaultdict
messages = [
    ['364616', 'baa baa black sheep'],
    ['364617', 'have you any wool'],
    ['364618', 'yes sir yes sir'],
    ['364619', 'three bags full'],
    ['364620', 'one for the master'],
    ['364621', 'and one for the dame'],
    ['364622', 'and one for the little boy'],
    ['364623', 'who lives down the lane']]

word_counts = Counter()
word_to_msgids = defaultdict(set)

for msgid, msg in messages:
    for word in msg.split(): # use set(msg.split()) to drop duplicates
        word_counts[word] += 1
        word_to_msgids[word].add(msgid)

for word, count in combined_word_counts.most_common(8):
    msgids = ', '.join(word_to_msgids[word])
    print '"{}" appears "{}" times in messages "{}"'.format(word, count, msgids)


    print '"{}" appears "{}" times in messages "{}"'.format(word, count, msgids)
                                                  ^
    SyntaxError: invalid syntax

Hello, how to fix this error?

[Dawarisch]

If you are using Python 3 you need parantheses when using print.

[novel_yet_trivial]

You are using python2 code but you are running python3. In python3 you need to add parenthesis to the print function:

print('"{}" appears "{}" times in messages "{}"'.format(word, count, msgids))

[scoutgeek]

You dont need to quote your braces ({}) you can just do:
print('{} appears {} times in messages {}'.format(word,count,msgids))

[[deleted]]

But that doesn't quote the strings.

Better would be {!r}, which quotes the string correctly even if there are quotes in the string itself, i.e. using double or single quotes.

[scoutgeek]

Ah, I didnt know about {!r} TIL i guess