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/

10-09 15:20
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