[Python知识库]python实现两个文件的合并

文件操作综合练习：已知有两个文本文件内容为地址本，如下图：

在address1.txt中的内容为姓名和电话号码，在address2.txt中的内容为姓名和邮箱地址，要求合并两个地址本，合并后效果如下：

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代码：

# 定义三个字典，放数据
address1 = {}
address2 = {}
new_address = {}


# 定义个函数，用来存数据进字典
def func(address, f):
    ls = []
    for line in f.readlines():
        ls.append(line.strip().split("，"))  # strip() 方法用于移除字符串头尾指定的字符（默认为空格或换行符）或字符序列。
    for i in ls:
        address[i[0]] = i[1]


# 打开文件，调用函数存数据
with open("address1.txt", 'r+') as f1:
    func(address1, f1)

with open("address2.txt", 'r+') as f2:
    func(address2, f2)

# 判断合并
# 先新建一个文件，放合并后的内容
with open("new_address.txt", 'w+') as f3:
    ls = []
    top = "姓名\t\t\t电话\t\t\t邮箱"
    ls.append(top + "\n")
    # 判断
    for key in address1.keys():  # 取出address1的所有键
        if key in address2.keys():  # 如果键也在address2的所有键里
            s = key + "\t\t" + address1[key] + "\t\t" + address2[key]  # 执行操作
        else:  # 否则，如果键不在address2的键中，则邮箱显示为****
            s = key + "\t\t" + address1[key] + "\t\t" + "**********"
        ls.append(s + "\n")

    for key_i in address2.keys():  # 取出address2的所有键
        if key_i not in address1.keys():  # 如果键不在address1的所有键里
            s = key_i + "\t\t" + "**********" + "\t\t" + address2[key_i]  # 则让电话号码显示为***
            ls.append(s + "\n")

    f3.writelines(ls)
    f3.seek(0)
    for line in f3:
        print(line, end='')

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