md5哈希值出错

时间:2015-12-02 06:14:33

标签: python hash

我输入了用于计算md5哈希值的代码,我希望在用户点击按钮时返回哈希值。但是,当我单击按钮时出现错误“TypeError:coercing to Unicode:need string or buffer,function found”。我尝试将哈希值转换为字符串,但它没有解决它。

def openfile():
filename = askopenfilename(parent=root)
f = open(filename)
f.read()
print (filename)

def hashmd5():
md5 = hashlib.md5()
with open(openfile, "rb") as f:
for block in iter(lambda: f.read(128), ""):
md5.update(block)
print (m.hexdigest)

def helloCallBack():
tkMessageBox.showinfo("Calculate MD5")
B = Button(text ="Calculate MD5", command = hashmd5)
B.pack()

更新:

def openfile():
filename = askopenfilename(parent=root)
f = open(filename)
f.read()
print (filename)

def savefile(self):
filename = tkFileDialog.asksaveasfilename(**self.file_opt)
if filename:
return open(filename, 'w')

def hashmd5():
md5 = hashlib.md5()
with (filename), "rb") as f:
for block in iter(lambda: openfile.read(128), ""):
 md5.update(block)
 print (md5.hexdigest)

2 个答案:

答案 0 :(得分:1)

错误:“NameError:全局名称'文件名'未定义”是因为您没有在def hashmd5()函数中定义文件名,因此您需要使用self.filename才能使用文件名变量

答案 1 :(得分:0)

openfile后缺少括号。但是,打开文件两次的重点是什么? (在openfile和hashmd5中都有?)