python面试题--统计文件中字母出现的次数

统计字母出现的次数 fp = open('a.txt','r',encoding='utf-8') content = fp.read() print(content) li,li2,li3,li4= [],[],[],[] for j in range(97, 123): li.append(j) for v in li: li2.append(chr(v)) for j in

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