q, qtype = line.strip().split("\t") ValueError: too many values to unpack (expected 2)分析一下
时间: 2023-10-17 08:37:09 浏览: 41
这个错误通常是因为尝试将一个长度大于2的字符串分割成两个部分,但是只提供了一个变量来接收这些部分。在这个例子中,使用`strip()`方法将字符串的开头和结尾的空格删除,然后使用`split()`方法将字符串分割成两部分,使用制表符为分隔符。但是,如果分割后得到的字符串部分数量大于2,则会触发ValueError异常。这个错误的解决方法是检查输入字符串中的分隔符是否正确,或者使用更多的变量来接收分割后的字符串部分。
相关问题
msedge.exe *64 - 192.168.1.1:53 DNS-UDP Error:QTYPE is incorrect
This error message indicates that there is a problem with the DNS resolution process for the Microsoft Edge browser. Specifically, the QTYPE (query type) parameter that Edge is sending to the DNS server at 192.168.1.1 is incorrect. This could be due to a configuration issue with the browser or the DNS server, or it could be caused by a network connectivity problem.
To troubleshoot this issue, you can try the following steps:
1. Check your network connectivity: Make sure that your computer is connected to the network and that you can access other websites and resources without issue.
2. Check your DNS settings: Verify that the DNS server address configured on your computer is correct and that it is reachable. You may need to check with your network administrator or Internet service provider to ensure that you have the correct DNS server settings.
3. Clear your browser cache and cookies: Sometimes, browser cache and cookies can cause issues with DNS resolution. Try clearing your browser cache and cookies and then restarting the browser.
4. Try using a different browser: If the problem persists, try using a different browser to see if the issue is specific to Microsoft Edge.
If none of these steps resolve the issue, you may need to contact Microsoft support or your network administrator for further assistance.
int DNS_query_create(struct DNS_Query *query,const char *hostname,const char *type){ if(query==NULL||hostname==NULL){ printf("query or hostname wrong.\n"); return -1; } memset(query, 0x00, sizeof(struct DNS_Query)); query->name=malloc(sizeof(hostname)+2); query->length=strlen(hostname)+2; char *ptr=query->name; int offset = 0; const char s[2]="."; char *hostname_dup= strdup(hostname); char *token=strtok(hostname_dup,s); while(token!=NULL){ size_t len=strlen(token); *(ptr+offset)=len; offset++; strncpy(ptr+offset,token,len+1); offset+=len; token=strtok(NULL,s); } free(hostname_dup); if(strcmp(type,"A")==0){ query->qtype= htons(TYPE_A); }else if(strcmp(type,"CNAME")==0){ query->qtype=htons(TYPE_CNAME); }else if(strcmp(type,"MX")==0){ query->qtype=htons(TYPE_MX); }else if(strcmp(type,"PTR")==0){ query->qtype=htons(TYPE_PTR); }else{ printf("No such type!!!\n"); exit(-1); } query->qclass= htons(0x0001); return offset; }
这段代码是一个函数,函数名为“DNS_query_create”,它接收三个参数,一个指向“DNS_Query”结构体的指针“query”,一个指向字符串的指针“hostname”,一个指向字符串的指针“type”。该函数的作用是根据传入的主机名和查询类型,初始化“query”指向的结构体,设置一些DNS协议查询的字段值,如name、length、qtype和qclass。如果传入的指针为NULL,则打印“query or hostname wrong.”的错误信息,并返回-1。该函数使用了C语言中的“memset”函数、“malloc”函数、“strdup”函数、“strtok”函数、“strlen”函数和“strcmp”函数。