我的代码如下:
search_request = urllib2.Request(url,data=tmp_file_name,headers={'X-Requested-With':'WoMenShi888XMLHttpRequestWin'})
#print search_request.get_method()
try:
search_response = urllib2.urlopen(search_request)
except urllib2.HTTPError:
pass
html_data = search_response.read()
print html_data
但是当我运行它时,我得到了:
Traceback (most recent call last):
File "G:\MyProjects\python\lfi_tmp.py", line 78, in <module>
print hello_lfi()
File "G:\MyProjects\python\lfi_tmp.py", line 70, in hello_lfi
html_data = search_response.read()
UnboundLocalError: local variable 'search_response' referenced before assignment
我尝试添加
global search_response
并再次运行,我得到这样的异常
Traceback (most recent call last):
File "G:\MyProjects\python\lfi_tmp.py", line 78, in <modul
print hello_lfi()
File "G:\MyProjects\python\lfi_tmp.py", line 70, in hello_
html_data = search_response.read()
NameError: global name 'search_response' is not defined
最佳答案
如果获取HTTPError
,则没有search_response
变量。所以这行:
html_data = search_response.read()
引发错误,因为您试图访问未声明的
search_response
。我认为您应该像这样替换html_data = search_response.read()
行:search_request = urllib2.Request(url,data=tmp_file_name,headers={'X-Requested-With':'WoMenShi888XMLHttpRequestWin'})
#print search_request.get_method()
try:
search_response = urllib2.urlopen(search_request)
html_data = search_response.read() #New here
except urllib2.HTTPError:
html_data = "error" #And here
print html_data
关于python - UnboundLocalError:局部变量,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/14021596/