# -*- coding: utf-8 -*-
import osclass SplitFiles():"""按行分割文件"""def __init__(self, file_name, line_count=200):"""初始化要分割的源文件名和分割后的文件行数"""self.file_name = file_nameself.line_count = line_countdef split_file(self):if self.file_name and os.path.exists(self.file_name):try:with open(self.file_name) as f:  # 使用with读文件temp_count = 0temp_content = []part_num = 1for line in f:if temp_count < self.line_count:temp_count += 1else:self.write_file(part_num, temp_count, temp_content)part_num += 1temp_count = 1temp_content = []temp_content.append(line)else:  # 正常结束循环后将剩余的内容写入新文件中
                        self.write_file(part_num, temp_count, temp_content)except IOError as err:print(err)else:print("%s is not a validate file" % self.file_name)def get_part_file_name(self, part_num, temp_count):""""获取分割后的文件名称：在源文件相同目录下建立临时文件夹temp_part_file，然后将分割后的文件放到该路径下"""temp_path = os.path.dirname(self.file_name)  # 获取文件的路径（不含文件名）temp_name = os.path.splitext(os.path.basename(self.file_name))[0]part_file_name = temp_path + os.sep + temp_nameif not os.path.exists(part_file_name):  # 如果临时目录不存在则创建
            os.makedirs(part_file_name)part_file_name += os.sep + temp_name + "_part" + str(part_num) + "_"+ str(temp_count) + ".txt"return part_file_namedef write_file(self, part_num, temp_count, *line_content):"""将按行分割后的内容写入相应的分割文件中"""print temp_countpart_file_name = self.get_part_file_name(part_num, temp_count)print(line_content)try:with open(part_file_name, "w") as part_file:part_file.writelines(line_content[0])except IOError as err:print(err)if __name__ == "__main__":sf = SplitFiles(r"/Users/xxx/目标文档.txt", 100000)sf.split_file()