**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_listwww.cppcns.com=
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 www.cppcns.comin url_list:
file.write(url)
print('done')
python從檔案中逐行讀取資料
非常的簡單,提供三種方法:
方法一:
f = open("foo.txt") # 返回乙個檔案物件
line = f.readline() # 呼叫檔案的 readline()程式設計客棧方法
while line:
print line, # 後面跟 ',' 將忽略換行符
# 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()#讀取全部內容
for line in lines
print line
總結本文標題: python 逐行分割大txt檔案的方法
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