python 文件处理

目录读取

import os
path = 'D:/01 计划&实施/'
file_names = os.listdir( path )

for i in file_names:
    code = i.replace(".png","")
    str = "update talbe1 set seal_image='#"+i+"' where seal_code='"+code+"';"
    print(str)

文件读取

方式1 全部读取

# -*- coding: utf-8 -*- 
path = 'H:/xx.txt'
str = "" 
f=open( path ,'r',encoding='utf-8')
for line in f.readlines():
    line = line.replace("\n"," ")
    str += line
f.close()

print(str)

方式2 逐行读取

# -*- coding: utf-8 -*- 
path = 'H:/xxx.txt'
str = "" 
with open(path,'r',encoding='utf-8') as f:
     str = f.readlines()
print(str)