有一个带有GUI的程序,该代码用PyCharm中的python 3.7编写。 问题:您不能在函数crypto()和create_mask()中使用可变程度。 我将使鉴赏家更容易提供帮助,因为我自己的python编程知识为零。 谢谢您的帮助。 程序代码:
import os
from tkinter import
from tkinter import filedialog as fd
from tkinter import messagebox as mb
global degree1
def variable():
l = encrypt_st.get()
if I == 1:
degree1 = 1
elif I == 2:
degree1 = 2
elif I == 3:
degree1 = 4
elif I == 4:
degree1 = 8
return degree1
def encrypt(degree1):
f = fd.askopenfilename(title="Select text file")
text = open(f, 'r')
d = fd.askopenfilename(title="Select stegocontainer")
start_bmp = open(d, 'rb')
encode_bmp = open('encode_bmp', 'wb')
text_len = os.stat(f).st_size
img_len = os.stat(d).st_size
if text_len >= (img_len * degree1 / 8) - 54:
mb.showerror("It is not possible to hide the data select a larger container")
return
first54 = start_bmp.read(54)
# print(first54) # show the first 54 bytes
encode_bmp.write(first54)
text_mask, img_mask = create_masks(degree1)
while True:
symbol = text.read(1)
if not symbol:
mb.showerror("Can't read the file")
break
symbol = ord(symbol)
for byte_amount in range (0, 8, degree):
img_byte = int.from_bytes(start_bmp.read(1), sys.byteorder) & img_mask
bits = symbol & text_mask
bits >> 8-degree
img_byte |= bits
encode_bmp.write(img_byte.to_bytes(1, sys.byteorder))
symbol <<= degree
def decrypt():
pass
def create_masks(degree1):
text_mask = 0b1111111111[enter image description here][1]
img_mask = 0b1111111111
text_mask <<= (8 - degree1)
text_mask %=256
img_mask >>= degree1
img_mask <<= degree1
return text_mask, img_mask
root = Tk()
root.title
root.geometry("400x90")
button1 = Button(text = "Hide data", command=encrypt)
button1.place(x=1, y=1)
lab1 = Label(text="Select degree of coding:")
encrypt_st = IntVar()
encrypt_st.set(0)
var1 = Radiobutton(text="1", value=1, variable=encrypt_st, command=encrypt)
var2 = Radiobutton(text="2", value=2, variable=encrypt_st, command=encrypt)
var3 = Radiobutton(text="4", value=3, variable=encrypt_st, command=encrypt)
var4 = Radiobutton(text="8", value=4, variable=encrypt_st, command=encrypt)
lab1.place(x=100, y=1)
var1.place(x=100, y=20)
var2.place(x=135, y=20)
var3.place(x=170, y=20)
var4.place(x=205, y=20)
root.mainloop()
错误代码: 在 call _ 中的文件“ C:\ Users \ 1 \ AppData \ Local \ Programs \ Python \ Python38-32 \ lib \ tkinter__init __。py”,第1883行 返回self.func(* args) TypeError:encrypt()缺少1个必需的位置参数:'degree1'
由www.DeepL.com/Translator(免费版)翻译
答案 0 :(得分:0)
两件事:
在全局范围内使用global
无效。当变量在内部范围内(例如函数或类定义)时,应将其声明为global
。要解决此问题,应将global degree1
添加到使用degree1
变量的任何函数中。附带说明一下,global
的使用是一种皱眉,因为有更好的方法可以实现“共享”变量的效果。最常见的方法是使用类方法。
tkinter
并未提供将事件参数传递给事件命令的现成方法。但是,我可以想到两种解决方法。第一个(可能是最常用的)是使用lambda
,它返回函数的句柄。
var1 = Radiobutton(text="1",
value=1,
variable=encrypt_st,
command=lambda: encrypt(degree1))
另一种方法是使用部分函数,您可以在使用functools
库时创建该函数。
from functools import partial
partial_encrypt = partial(encrypt, degree1)
# partial_encrypt is now a partial object which will call
# encrypt(degree1) when called. We can pass this as a command
# to your tkinter widget.
var1 = Radiobutton(text="1",
value=1,
variable=encrypt_st,
command=partial_encrypt)