Python 统计文件中出现的单词数
我想使用字典计算文件中每个单词的出现次数(文件中包含的所有单词都是小写,文件中不包含任何标点符号) 我想优化我的代码,因为我知道列表需要不必要的时间Python 统计文件中出现的单词数,python,file,dictionary,Python,File,Dictionary,我想使用字典计算文件中每个单词的出现次数(文件中包含的所有单词都是小写,文件中不包含任何标点符号) 我想优化我的代码,因为我知道列表需要不必要的时间 def create_dictionary(filename): d = {} flat_list = [] with open(filename,"r") as fin: for line in fin: for word in line.split():
def create_dictionary(filename):
d = {}
flat_list = []
with open(filename,"r") as fin:
for line in fin:
for word in line.split():
flat_list.append(word)
for i in flat_list:
if d.get(i,0) == 0:
d[i] = 1
else :
d[i] +=1
return d
例如,包含以下内容的文件:
i go to the market to buy some things to
eat and drink because i want
to eat and drink
应返回:
{'i': 2, 'go': 1, 'to': 4, 'the': 1, 'market': 1, 'buy': 1, 'some': 1, 'things': 1, 'eat': 2, 'and': 2, 'drink': 2, 'because': 1, 'want': 1}
我可以改进什么?只需使用集合。计数器:
with open(filename,"r") as fin:
print(Counter(fin.read().split()))
对那种事情来说很好。