Python字典和列表比较

Question

我试图将列表“ lines”中的每个项目与字典“ dic”进行比较，然后将项目从行添加到dic（如果不存在），或者将1添加到字典中键的值。

import string

def uniques():
    file = open("test.txt", "r")
    dic = {}
    data = file.read().replace('\n', ' ')
    strip = removePunctuation(data)
    lines = strip.split(' ')
    print(strip)
    print(lines)

    for item in lines:

        #this produces an error of unhashable type: 'list'
        if lines in dic:
            dic[item] = dic[item] + 1
        else:
            print("else ran")
            dic[item] = 1

    for item in dic:
        print(item, dic[item])
        print("There are " + str(len(dic)) + " items in the dictionary")

def removePunctuation(text):
    text = text.strip()
    return text.rstrip(string.punctuation)

uniques()

Answer 1

它的

if item in dic:
      dic[item] = dic[item] + 1

代替

if lines in dic:
      dic[item] = dic[item] + 1

Answer 2

if item in dic.values():

而不是if lines in dic:的if lines in dic:

这将创建一个dict_value列表。