Question

我想将以下Python 2代码转换为Python 3：

# Consts
HEADER_SIZE = 54 # Header size of BMP
DELIMITER = "$" # Separator between number of characters and text

# User Configurations
TextToHide = "I Am Secret Information!"
ImageFile = "C:/Users/Sherif/OneDrive/P3/FW.bmp"
StegImageFile = "C:/Users/Sherif/OneDrive/P3/hidden_cat.bmp"

class LSBEncrypter(object):

def __init__(self):
    self.image_byte_counter = 0
    self.new_image_data = ''
    self.original_image = ''
    self.text_to_hide = ''

def open_image(self):
    # Open the image file
    with open(ImageFile, "rb") as f:
        self.original_image = f.read()

# Reading first chunk of the file - we don't want to overwrite the header
def read_header(self):
    for x in range(0, HEADER_SIZE):
        self.new_image_data += self.original_image[x]
        self.image_byte_counter += 1

def hide_text_size(self):
    sz = len(self.text_to_hide)
    s_sz = str(sz)
    s_sz += DELIMITER # s_sz now equal to size of text to hide + Delimiter
    self.do_steg(s_sz)

# Hides the text in the image.
# Does that by replacing the bytes LSB (Least significant bit) to be our bit
def do_steg(self, steg_text):

    # Goes through the text we want to hide, char by char
    for ch in range(0, len(steg_text)):

        current_char = steg_text[ch] # Gets current Char
        current_char_binary = '{0:08b}'.format(ord(current_char)) # Gets the binary value of current character

        # Goes through current char binary - bit by bit
        for bit in range(0, len(current_char_binary)):
            new_byte_binary = ''

            ### Overwriting the image's byte LSB with our current Bit

            # Gets the binary value of original image byte
            current_image_binary = '{0:08b}'.format(ord(self.original_image[self.image_byte_counter]))

            # Copies the first 7 bits (we want them to be the same)
            new_byte_binary = current_image_binary[:7]

            # Set the last bit to be our bit
            new_byte_binary += current_char_binary[bit]

            # Gets the new char value by it's binary
            new_byte = chr(int(new_byte_binary, 2))

            # Adds new byte to output
            self.new_image_data += new_byte
            self.image_byte_counter += 1

def copy_rest(self):
    # Copies the what's left of the file
    self.new_image_data += self.original_image[self.image_byte_counter:]

def close_file(self):
    with open(StegImageFile, "wb") as out:
        out.write(self.new_image_data)

def run(self, stega_text):
    self.text_to_hide = stega_text
    self.open_image()
    self.read_header()
    self.hide_text_size()
    self.do_steg(self.text_to_hide)
    self.copy_rest()
    self.close_file()

def main():
    global TextToHide
    stega_instance = LSBEncrypter()
    stega_instance.run(TextToHide)
    print ("Successfully finished hiding text")

if __name__ == '__main__':
    main()

但是我收到以下错误：

Traceback（最近一次调用最后一次）：文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第93行，在 main（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第89行，主要 stega_instance.run（TextToHide）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第80行，运行中 self.read_header（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第28行，在read_header中 self.new_image_data + = self.original_image [x] TypeError：无法转换＆＃39; int＆＃39;隐含地反对str

所以我改变了：

def read_header(self):
    for x in range(0, HEADER_SIZE):
        self.new_image_data += str(self.original_image[x])
        self.image_byte_counter += 1

但是得到以下错误：

Traceback（最近一次调用最后一次）：文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第93行，在 main（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第89行，主要 stega_instance.run（TextToHide）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第81行，运行中 self.hide_text_size（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第35行，在hide_text_size中 self.do_steg（s_sz）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第54行，在do_steg中 current_image_binary =＆＃39; {0：08b}＆＃39; .format（ord（self.original_image [self.image_byte_counter]）） TypeError：ord（）期望的字符串长度为1，但是找到了int

所以我删除了0rd（）：

def do_steg(self, steg_text):
    for ch in range(0, len(steg_text)):
        current_char = steg_text[ch] 
        current_char_binary = '{0:08b}'.format((current_char))

并收到以下错误：

Traceback（最近一次调用最后一次）：文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第104行，in main（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第100行，主要 stega_instance.run（TextToHide）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第92行，运行中 self.hide_text_size（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第35行，在hide_text_size中 self.do_steg（s_sz）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第55行，在do_steg中 current_char_binary =＆＃39; {0：08b}＆＃39; .format（（current_char））＃获取当前字符的二进制值ValueError：未知格式代码＆＃39; b＆＃39; 对于类型＆＃39; str＆＃39;
的对象

我尝试将所有函数转换为byte：

def do_steg(self, steg_text):
    for ch in range(0, len(steg_text)):

        current_char = steg_text[ch] 
        current_char_binary = '{}'.format(current_char.encode('utf-8')) # Gets the binary value of current character

        for bit in range(0, len(current_char_binary)):
            new_byte_binary = ''

            current_image_binary = '{}'.format((self.original_image[self.image_byte_counter]))

            new_byte_binary = current_image_binary[:7]

            new_byte_binary += current_char_binary[bit]

            new_byte = new_byte_binary

            self.new_image_data += new_byte
            self.image_byte_counter += 1

但我仍然收到错误：

Traceback（最近一次调用最后一次）：文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第94行，in main（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第90行，主要 stega_instance.run（TextToHide）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第84行，运行中 copy.crest中的self.copy_rest（）文件＆＃34; C：\ Users \ Sherif \ OneDrive \ P3 \ simple.py＆＃34;，第72行 self.new_image_data + = self.original_image [self.image_byte_counter：] TypeError：无法转换＆＃39;字节＆＃39;隐含地反对str

如何在没有这些错误的情况下转换为Python 3？

将Python 2代码转换为Python 3时出错

0 个答案: