本文通过代码给大家介绍了python 逐行分割大txt文件的方法，在文中给大家提到了python从txt文件中逐行读取数据的方法，需要的朋友参考下吧
代码如下所示：
# -*- coding:-*- import io LIMIT = 150000 file_count = 0 url_list = [] with io.open('D:\DB_NEW_bak\DB_NEW_20171009_bak.sql','r',encoding='utf-16') as f: for line in f: url_list.append(line) if len(url_list) < LIMIT: continue file_name = str(file_count)+".sql" with io.open(file_name,'w',encoding='utf-16') as file: for url in url_list[:-1]: file.write(url) file.write(url_list[-1].strip()) url_list=[] file_count+=1 if url_list: file_name = str(file_count) + ".sql" with io.open(file_name,'w',encoding='utf-16') as file: for url in url_list: file.write(url) print('done')
Python从txt文件中逐行读取数据
非常的简单，提供三种方法：
方法一：
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f = open("foo.txt") # 返回一个文件对象
line = f.readline() # 调用文件的 readline()方法
while line:
print line, # 后面跟 ',' 将忽略换行符
# print(line, end = '') # 在 Python 3中使用
line = f.readline()
f.close()方法二：
for line in open("foo.txt"):
print line,方法三：
f = open("c:\\1.txt","r")
lines = f.readlines()#读取全部内容
for line in lines
print line总结
