Python实现统计不同字符数量

    import re
    d = {}
    with open("E:\sample.txt", encoding = "utf-8") as f:
    for line in f:
        tmp = line.lower().strip() # 对一行字符串进行小写转换并切割两头空白符
        lst = re.split('[ .(),=:"»~>*]', tmp)
        for s in lst:
            # if s not in d.keys():
            #     d[s] = 1
            # else:
            #     d[s] += 1
            d[s] = d.get(s, 0) + 1  # 经改进
    
    print(sorted(d.items(), key=lambda x:x[1], reverse=True)) # 利用