文件里内容的去重和统计

一个文件如下：

找出相同元素的值的和并写入文件：

代码如下：

dict1 = {}
with open("统计文件.txt",'r') as f:

    # 按行读取文件
    alist = f.readlines()

    # 去除空行
    for str in alist:
        if str == '\n':
            continue
        else:
            # 去除后边的空格，并分割成列表
            a = str.rstrip("\n")
            blist = a.split("   ")
            if blist[0] in dict1:
                dict1[blist[0]] += int(blist[1])
            else:
                dict1[blist[0]] = int(blist[1])
print(dict1)
# 将结果格式化写入文件
with open("统计结果.txt","a") as file:
    for key in dict1.keys():
        file.write('{}  {}\n'.format(key,dict1[key]))