循环，验证中的错误[Python]

Question

我正在尝试验证我的python脚本：

def DOBSearch():
loop = True
while loop == True:
    try:
        DOBsrch = int(input("Please enter the birth month in a two digit format e.g. 02: "))
        for row in BkRdr:
            DOB = row[6]
            day,month,year = DOB.split("/")
            if DOBsrch == int(month): 
                print("W")
                surname = row[0]
                firstname = row[1]
                print(firstname, " ",surname)
                addrsBk.close
                loop = False
            else:
                print("1 That was an invalid choice please try again.")
    except:
        print("That was an invalid choice please try again.")

但是，当我尝试测试脚本时，我发现有一个bug/错误，因为我得到了以下输出：

     Please enter the birth month in a two digit format e.g. 02: ergase
That was an invalid choice please try again.
Please enter the birth month in a two digit format e.g. 02: 34
1 That was an invalid choice please try again.
1 That was an invalid choice please try again.
1 That was an invalid choice please try again.
1 That was an invalid choice please try again.
1 That was an invalid choice please try again.
1 That was an invalid choice please try again.
Please enter the birth month in a two digit format e.g. 02: 234567
Please enter the birth month in a two digit format e.g. 02: 02
Please enter the birth month in a two digit format e.g. 02: 02
Please enter the birth month in a two digit format e.g. 02: 02
Please enter the birth month in a two digit format e.g. 02:  

以下是CSV文件：

Jackson,Samantha,2 Heather Row,Basingstoke,RG21 3SD,01256 135434,23/04/1973,sam.jackson@hotmail.com
Vickers,Jonathan,18 Saville Gardens,Reading,RG3 5FH,01196 678254,04/02/1965,the_man@btinternet.com
Morris,Sally,The Old Lodge, Hook,RG23 5RD,01256 728443,19/02/1975,smorris@fgh.co.uk
Cobbly,Harry,345 The High Street,Guildford,GU2 4KJ,01458 288763,30/03/1960,harry.cobbly@somewhere.org.uk
Khan,Jasmine,36 Hever Avenue,Edenbridge,TN34 4FG,01569 276524,28/02/1980,jas.khan@hotmail.com
Vickers,Harriet,45 Sage Gardens,Brighton,BN3 2FG,01675 662554,04/04/1968,harriet.vickers@btinternet.com