使用collections.Counter.

示例文件：

/tmp/foo.txt

hello world

hello world

foo bar

foo bar baz

/tmp/bar.txt

hello world

hello world

foo bar

foo bar baz

foo foo foo

您可以為每個(gè)文件創(chuàng)建一個(gè)Counter,然后將它們加在一起！

from collections import Counter

def word_count(filename):

with open(filename, "r") as f:

c = Counter()

for line in f:

c.update(line.strip().split(" "))

return c

files = ["/tmp/foo.txt", "/tmp/bar.txt"]

counters = [word_count(filename) for filename in files]

# counters content (example):

# [Counter({"world": 2, "foo": 2, "bar": 2, "hello": 2, "baz": 1}),

# Counter({"foo": 5, "world": 2, "bar": 2, "hello": 2, "baz": 1})]

# Add all the word counts together:

total = sum(counters, Counter()) # sum needs an empty counter to start with

# total content (example):

# Counter({"foo": 7, "world": 4, "bar": 4, "hello": 4, "baz": 2})

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