文章目录
- 前言
- 一、根据行数拆分
- 二、根据文件大小拆分
- 三、提取奇偶行
前言
拆分txt文件
- 根据行数拆分txt文件
- 根据文件大小拆分txt文件
- 提取txt文件的奇数行，偶数行
一、根据行数拆分
def spilt_1(file_path, output_file, limit):"""根据行数拆分文件:param file: 待拆分的文件:param output_file: 拆分之后的文件名（前部）:param limit: 每个文件中的行数:return:"""out_i = 1 # 拆分之后的文件名下标txt_line = []with open(file_path, 'r', encoding='UTF-8') as fp:for line in fp:txt_line.append(line)if len(txt_line) <= limit:continuewith open(output_file + str(out_i) + '.txt', 'w', encoding='UTF-8') as fo:for i in txt_line[:-1]:fo.write(i)txt_line = []out_i += 1if txt_line:with open(output_file + str(out_i) + '.txt', 'w', encoding='UTF-8') as fo:for i in txt_line[:-1]:fo.write(i)print("done!")
二、根据文件大小拆分
def spilt_2(file_path, output_file, limit):"""根据文件大小拆分文件:param file: 待拆分的文件:param output_file: 拆分之后的文件名（前部）:param limit: 每个文件的大小*1000 （limit=100000, 即100KB：每次读取100KB大小内容,拆分后每个文件大小100MB）:return:"""out_i = 1 # 拆分之后的文件名下标with open(file_path, 'r', encoding='UTF-8') as fp:read_data = fp.read(limit) # 100KB 每次读取100KB大小内容while(read_data != ''):with open(output_file + str(out_i) + '.txt', 'w', encoding='UTF-8') as fo:for j in range(0, 1024): # 100KB * 1024 =100mb 拆分后每个文件大小100MBfo.write(read_data)read_data = fp.read(limit) # 100KBif(read_data == ""):breakout_i = out_i + 1print("done!")
三、提取奇偶行
def spilt_3(path, odd_path, even_path):"""提取奇数行，偶数行并分别保存为txt文件:param path: 待拆分的文件:param odd_path: 奇数行文件:param even_path: 偶数行文件:return:"""with open(path, "r", encoding="utf-8") as f:lines = f.readlines()file_1 = open(odd_path, 'w', encoding='utf-8')file_2 = open(even_path, 'w', encoding='utf-8')for num, line in enumerate(lines):# print(num, line)if (num % 2) == 0: # num为偶数说明是奇数行print(line.strip(), file=file_1) # .strip用来删除空行else: # # num为奇数说明是偶数行print(line.strip(), file=file_2)file_1.close()file_2.close()
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