Archives week 5 of 2016

Python read and write file

1.Python read and write file

fr=open("readfile.txt","r")  
fw=open("writefile.txt","w")

print fr.readline()  
print fr.tell()

print fr.readlines()  
fw.write("===write line===")  
fw.close()

fr.seek(0,0) #The first parameter represents the number of bytes, after which a parameter represents the relative ...

source code:

# -*- coding: utf-8 -*-
import random
def generate_verification_code():
    ''' randomly generated a 6 bit verification code '''
    code_list = []
    for i in range(10): # 0-9 number
        code_list.append(str(i))
    for i in range(65, 91): # A-Z
        code_list.append(chr(i))
    for i in range(97, 123): # a-z
        code_list.append(chr(i))
    myslice = random.sample(code_list, 6)  
    verification_code ...