Question

我正在编写一个脚本，从用户那里获取输入并将其存储到文本文件中。它工作正常，但每次运行脚本时，我的文本文件都会被覆盖。有没有办法永久保存数据，它不会被覆盖。

class reports:
    def __init__(self):      

        self.BrandDetails= "Give details for Brands"
        self.UserDetails = "Give details for Users"


    def brands(self,bname,bid):
        name=bname
        id=bid
        print("\t")
        print "Brand name is ", name
        print "Brand Id is", id
##        return name, id

        fp = open("test.txt","w")
        fp.seek(6,2)
        fp.write('\t')
        fp.write('bname: %s, id: %s' % (bname or '', bid or ''))
        fp.close()

        print "\nFile data is: \t \n"
        f=open('test.txt',"r+")
        print f.read()




brand= reports()
print brand.BrandDetails

brand.brands(raw_input("Enter Brand name:"),
        input("Enter Brand Id: "))


class users(reports):


    def userdetails(self,uname,uid):
            name=uname
            id=uid
            print("\t")
            print "User name is ", name
            print "User Id is", id

            fp = open("test.txt","r+")
            fp.seek(6,2)
            fp.write('')
            fp.write('uname: %s, uid: %s' % (uname or '', uid or ''))
            fp.close()

            print "\nFile data is: \t \n"
            f=open('test.txt',"r+")
            print f.read()



u=users()
print "\n\n"
print u.UserDetails

u.userdetails(raw_input("Enter User name:"),
        input("Enter User Id: "))

我是python的新手。所以，我问这样的问题

Answer 1

试试这个

#File :  /tmp/test.py

class reports:
    def __init__(self):
        self.BrandDetails= "Give details for Brands"
        self.UserDetails = "Give details for Users"

    def brands(self, bname, bid):
        name=bname
        id=bid
        fp = open('/tmp/test.txt', 'w')
        fp.write('\t')
        fp.write('bname: %s, id: %s' % (bname or '', bid or ''))
        fp.close()

if __name__ == '__main__':
    brand= reports()
    print brand.BrandDetails

    brand.brands(raw_input("Enter Brand name:"),
                    input("Enter Brand Id: "))

输出

python /tmp/test.py
Give details for Brands
Enter Brand name:Nile
Enter Brand Id: 123
[~]$ cat /tmp/test.txt
        bname: Nile, id: 123

从函数获取数据然后写入文本文件后保存文件内容

1 个答案: